離子取代對Sr2MgAl22O36:Mn2+光熱性能的影響研究摘要綠色窄帶熒光粉是背光源顯示系統(tǒng)中重要的材料之一。但是目前商用的綠色熒光粉帶寬仍然不理想，過寬的半峰寬（FWHM）直接限制了背光源設(shè)備的色域?qū)挾龋詫ふ倚碌木哂刑囟ǚ逦?，帶寬更窄的綠色熒光粉是目前最大的挑戰(zhàn)。Sr2Mg0.85Al22O36:Mn2+（SMAO:Mn2+）是最近發(fā)現(xiàn)的具有優(yōu)良光學(xué)性能以及熱穩(wěn)定性的綠色窄帶熒光粉，F(xiàn)WHM僅為26nm，但其發(fā)光強(qiáng)度和熱穩(wěn)定性能都還有提升的空間，深入研究將有助于其在背光源設(shè)備中的商業(yè)應(yīng)用。本文針對SMAO:Mn2+研發(fā)現(xiàn)狀，進(jìn)行了單離子和離子對的取代，并利用X射線衍射（XRD）和熒光光譜儀對取代后的熒光粉物相和發(fā)光性能以及熱穩(wěn)定進(jìn)行了表征。具體研究結(jié)果如下:1.分別利用Ca2+、Ba2+或Zn2+對Sr2+和Mg2+進(jìn)行單一離子取代，成功地合成了三類SMAO:Mn2+熒光粉。測試結(jié)果表明在所取代范圍內(nèi)，樣品均為純相。Ca2+對SMAO:0.15Mn2+進(jìn)行取代后進(jìn)入Sr2+格位，合成的樣品Sr2(1-x)Ca2xMg0.85Al22O36:0.15Mn2+（5%≤x≤25%）的發(fā)光強(qiáng)度在保持峰位和FWHM不變的情況下進(jìn)一步提升，發(fā)光強(qiáng)度在423K時可以保持室溫（298K）下的98%，523K時也穩(wěn)定在95%；Ba2+對SMAO:0.15Mn2+進(jìn)行取代后進(jìn)入Sr2+格位，Sr2(1-x)BaxMgAl22O36:0.15Mn2+（5%≤x≤25%）在保持峰位和FWHM不變的前提下，發(fā)光強(qiáng)度有所提高，發(fā)光強(qiáng)度在423K時保持96%，523K時為92%；不同于前兩者，Zn2+取代后進(jìn)入的是Mg2+格位，Sr2Mg(0.85-x)ZnxAl22O36:0.15Mn2+（5%≤x≤25%）峰位和FWHM并未發(fā)生變化，但是發(fā)光強(qiáng)度產(chǎn)生了明顯的下降，有利的是熱穩(wěn)定性也得到了提升，423K時發(fā)光強(qiáng)度95%，523K維持在90%。2.利用Gd3+-Na+、Ba2+-Ca2+或Si4+-Na+對SMAO:0.15Mn2+進(jìn)行了取代研究，制備了雙取代系列窄帶綠色熒光粉。Gd3+-Na+或Ba2+-Ca2+離子對取代后，XRD結(jié)果證實(shí)樣品均保持純相。Gd3+-Na+取代后會進(jìn)入SMAO:0.15Mn2+中Sr2+的格位，Sr2(1-x)(Gd-Na)2xMgAl22O36:0.15Mn2+（5%≤x≤25%）發(fā)光峰位和FWHM均保持不變，且發(fā)光強(qiáng)度得到提升，但熱穩(wěn)定性下降，當(dāng)溫度為423K時，發(fā)光強(qiáng)度為298K時發(fā)光強(qiáng)度的90%，達(dá)到523K時為室溫下強(qiáng)度的75%；Ba2+-Ca2+離子取代Sr2+的格位，Sr2(1-x)(Ca0.55Ba0.45)2xMgAl22O36:0.15Mn2+（5%≤x≤25%）的發(fā)光峰位和FWHM仍保持不變，發(fā)光強(qiáng)度提升，熱穩(wěn)定性也提升，423K時發(fā)光強(qiáng)度為97%，523K為92%。在研究范圍內(nèi)Si4+-Na+離子對取代會引起雜相的產(chǎn)生，從而使得取代后所得熒光粉雖然發(fā)光峰位不變，但是FWHM變寬且熱穩(wěn)定性也明顯下降，523K時僅為75%左右。關(guān)鍵詞:SMAO:Mn2+；窄帶熒光粉；離子取代；熱穩(wěn)定性AbstractGreennarrow-bandphosphorsareoneofthemostimportantmaterialsbacklightdisplaysystems.However,thecurrentcommercialgreenphosphorbandwidthisstillnotidealforthewidefull-widthathalf-maximum(FWHM)directlylimitsthecolorgamutofthebacklightdevices.Therefore,tofindanewgreenphosphorwithaspecificpeakpositionandanarrowerbandwidthisthebiggestchallengeatpresent.Sr2Mg0.85Al22O36:Mn2+（SMAO:Mn2+）wasarecentlydiscoveredgreennarrow-bandphosphorwhoseFWHMwasonly26nmwithexcellentluminouspropertiesandthermalstability,however,stillcanbeimprovedforfurthercommercialapplicationsinbacklightingdisplaydevices.Inthisthesis,basedonthecontemporaryreportofSMAO:Mn2+,theexperimentsofsingle-ionandion-pairsubstitutionswerecarriedoutinordertoenhancetheluminousandthermalproperties.ThephaseandopticalpropertiesandthermalstabilityofthesubstitutedphosphorswerecharacterizedbyX-raydiffraction（XRD）andfluorescencespectrometer.Thespecificresearchresultsareasfollows:1.ThreekindsofSMAO:Mn2+phosphorsweresuccessfullysynthesizedaftersingleionsubstitutionofSr2+andMg2+byCa2+,Ba2+orZn2+.Thetestresultsshowedthatthesampleswereallpurephasewithintherangeofsubstitution.TheluminescenceintensityoftheobtainedsampleSr2(1-x)Ca2xMg0.85Al22O36:0.15Mn2+(5%≤x≤25%)improvedwhilemaintainingtheoriginalpeakpositionandFWHMunchanged.Furtherimprovementwasalsofoundedinthethermalstabilitytest.Theluminescenceintensitymaintained98%ofitatroomtemperature（298K）at423K,and95%at523K;Ba2+enteredthepositionofSr2+aftersubstitutionofSMAO:0.15Mn2+,gainingSr2(1-x)BaxMgAl22O36:0.15Mn2+(5%≤x≤25%).UnderthepremiseofkeepingthepeakpositionandFWHMunchanged,theluminescenceintensitywasimproved.Theluminescenceintensitywas96%at423K,and92%at523K;Mg2+wassubstitutedbyZn2+afterthesubstitution,andthepeakpositionandFWHMofSr2Mg(0.85-x)ZnxAl22O36:0.15Mn2+(5%≤x≤25%)phosphorsdidnotchange,buttheluminescenceintensitydecreasedsignificantly.Advantageously,thethermalstabilityisalsoimproved,withaluminescenceintensityof95%at423Kanda523Kof90%.ThesubstitutionofSMAO:0.15Mn2+byGd3+-Na+,Ba2+-Ca2+orSi4+-Na+wascarriedouttoprepareadouble-substitutedseriesofnarrow-bandgreenphosphors.AftersubstitutionoftheGd3+-Na+orBa2+-Ca2+ionpair,XRDresultsconfirmedthatthesamplesremainedpurephase.AfterGd3+-Na+substitution,itwouldenterthepositionofSr2+inSMAO:0.15Mn2+,obtainingSr2(1-x)(Gd-Na)2xMgAl22O36:0.15Mn2+(5%≤x≤25%).ThepeakpositionandFWHMremainunchanged.Althoughtheluminescenceintensitywasimproved,thethermalstabilitydecreased.Whenthetemperaturewas423K,theluminescenceintensitywas90%oftheluminescenceintensityat298K,andwhenitreached523K,itis75%.TheBa2+-Ca2+ionreplacedthepositionofSr2+,thepeakpositionandFWHMofSr2(1-x)(Ca0.55Ba0.45)2xMgAl22O36:0.15Mn2+(5%≤x≤25%)remainedunchanged.Luminescenceintensityandthermalstabilitywereimproved,luminousintensityof97%at423Kand92%at523K.Inthestudyrange,Si4+-Na+ionpairsubstitutionwouldcauseheterophase.Despitethephosphorobtainedafterthesubstitutionhasthetypicalluminouspeakposition,theFWHMwaswidenedandthethermalstabilityalsosignificantlyreduced,75%at523K.Keywords:SMAO:0.15Mn2+;narrow-bandphosphor;ionsubstitution;thermalstability目錄TOC\o"1-5"\h\z\u第一章緒論 第一章緒論1.1引言人類在探尋光的本質(zhì)的漫長歷程中逐漸揭示了自然和宇宙的奧秘，對于神圣光明的追求是人類走向文明和現(xiàn)代科技的重要基石。探尋光的旅程開始于兩千五百年前的西西里島，希臘哲學(xué)家安比杜勒斯提出人的眼睛就像燈塔般發(fā)出光線使得眼睛看到東西。牛頓則通過三菱鏡，精確地測量了光的色彩，發(fā)明了光譜，并用實(shí)驗(yàn)和觀察來理性證實(shí)白光是由不同的其他純色混合組成的，駁斥了笛卡爾的理論，并開創(chuàng)了現(xiàn)代科學(xué)的文明ADDINEN.CITE<EndNote><Cite><Author>呂國強(qiáng)</Author><Year>2014</Year><RecNum>38</RecNum><DisplayText><styleface="superscript">[1]</style></DisplayText><record><rec-number>38</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">38</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>呂國強(qiáng)</author></authors></contributors><auth-address>合肥工業(yè)大學(xué)光電技術(shù)研究院特種顯示技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室特種顯示技術(shù)國家工程實(shí)驗(yàn)室現(xiàn)代顯示技術(shù)省部共建國家重點(diǎn)實(shí)驗(yàn)室;</auth-address><titles><title>《液晶顯示LED背光技術(shù)》專題文章導(dǎo)讀</title><secondary-title>液晶與顯示</secondary-title></titles><periodical><full-title>液晶與顯示</full-title></periodical><pages>1083</pages><volume>29</volume><number>06</number><keywords><keyword>液晶顯示</keyword><keyword>文章</keyword><keyword>LED</keyword><keyword>液晶顯示器</keyword></keywords><dates><year>2014</year></dates><isbn>1007-2780</isbn><call-num>22-1259/O4</call-num><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"呂國強(qiáng),2014#38"1]。在人類科學(xué)的歷史長河中，發(fā)光材料一直與人類社會的發(fā)展緊密相連，很大程度地推進(jìn)了人類科學(xué)與文明的進(jìn)程。隨著信息時代的到來，五花八門的信息充斥著我們的生活，以多種形式呈現(xiàn)在我們的眼前。人們的生活越來越離不開各式各樣的顯示設(shè)備:電視，電腦，手機(jī)等，顯示技術(shù)已經(jīng)在不知不覺中成為社會的重要科技成分。近些年來，顯示設(shè)備迅猛發(fā)展，人們對于顯示器的各方面性能都有了更高的要求。發(fā)光材料作為顯示技術(shù)中至關(guān)重要的組成部分，是提升顯示器各方面性能的關(guān)鍵。1.2發(fā)光與發(fā)光材料發(fā)光是物質(zhì)將其以某種方式吸收的外部能量轉(zhuǎn)化為物體熱輻射之外，以光的形式發(fā)射出多余的能量的過程，而這種多余的能量的發(fā)射過程具有一定的持續(xù)時間（余輝）。外部能量對發(fā)光物質(zhì)的作用稱為激發(fā)ADDINEN.CITE<EndNote><Cite><Author>季洪雷</Author><Year>2017</Year><RecNum>36</RecNum><DisplayText><styleface="superscript">[2]</style></DisplayText><record><rec-number>36</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">36</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>季洪雷</author><author>周青超</author><author>潘俊</author><author>柏澤龍</author><author>鐘海政</author></authors></contributors><auth-address>北京理工大學(xué)材料學(xué)院納米光子學(xué)與超精密光電系統(tǒng)北京市重點(diǎn)實(shí)驗(yàn)室;TCL多媒體研發(fā)中心;中國科學(xué)院大學(xué);</auth-address><titles><title>量子點(diǎn)液晶顯示背光技術(shù)</title><secondary-title>中國光學(xué)</secondary-title></titles><periodical><full-title>中國光學(xué)</full-title></periodical><pages>666-680</pages><volume>10</volume><number>05</number><keywords><keyword>量子點(diǎn)</keyword><keyword>背光技術(shù)</keyword><keyword>高色域</keyword><keyword>顯示</keyword><keyword>鈣鈦礦</keyword><keyword>光學(xué)膜</keyword></keywords><dates><year>2017</year></dates><isbn>2095-1531</isbn><call-num>22-1400/O4</call-num><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"季洪雷,2017#36"2]。在本文中，如無特別說明，發(fā)光特指光致發(fā)光。無機(jī)發(fā)光材料也叫熒光材料（熒光粉）是在外界激發(fā)作用下能夠發(fā)光的物質(zhì)，通常由主體化合物和摻雜離子組成。主體化合物為發(fā)光材料的基質(zhì)，摻雜離子由激活劑、共激活劑、敏化劑、助熔劑以及一些對發(fā)光性能影響較小的惰性雜質(zhì)等組成ADDINEN.CITE<EndNote><Cite><Author>季洪雷</Author><Year>2017</Year><RecNum>36</RecNum><DisplayText><styleface="superscript">[2]</style></DisplayText><record><rec-number>36</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">36</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>季洪雷</author><author>周青超</author><author>潘俊</author><author>柏澤龍</author><author>鐘海政</author></authors></contributors><auth-address>北京理工大學(xué)材料學(xué)院納米光子學(xué)與超精密光電系統(tǒng)北京市重點(diǎn)實(shí)驗(yàn)室;TCL多媒體研發(fā)中心;中國科學(xué)院大學(xué);</auth-address><titles><title>量子點(diǎn)液晶顯示背光技術(shù)</title><secondary-title>中國光學(xué)</secondary-title></titles><periodical><full-title>中國光學(xué)</full-title></periodical><pages>666-680</pages><volume>10</volume><number>05</number><keywords><keyword>量子點(diǎn)</keyword><keyword>背光技術(shù)</keyword><keyword>高色域</keyword><keyword>顯示</keyword><keyword>鈣鈦礦</keyword><keyword>光學(xué)膜</keyword></keywords><dates><year>2017</year></dates><isbn>2095-1531</isbn><call-num>22-1400/O4</call-num><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"季洪雷,2017#36"2]。1.3背光源顯示技術(shù)隨著顯示技術(shù)的不斷發(fā)展，顯示設(shè)備的更新迭代，目前的液晶顯示技術(shù)已經(jīng)達(dá)到一個較為成熟的水平，然而還不能完全滿足目前大眾對于顯示器美觀輕便的追求，以及高色純度等性能的要求。液晶顯示器因?yàn)樽陨頍o法發(fā)光，是一種需要背光源的被動顯示技術(shù)。我們通常用于衡量液晶顯示器的指標(biāo)如亮度，畫質(zhì)，厚度，色彩再現(xiàn)性，功耗，成本，對比度等都和背光模組有緊密的關(guān)系。換一句話說，背光模組在很大程度上決定了液晶顯示器的許多重要的性能。并且，在目前的液晶顯示器逐漸追求大尺寸化的趨勢下，背光模組的地位也日益變高。發(fā)光二極管（LED,LightEmittingDiode）作為液晶顯示器背光模組具有長壽命，寬色域，勝點(diǎn)，低溫操作，環(huán)保（無Hg），響應(yīng)速度快等優(yōu)點(diǎn)成為薄膜晶體管顯示（TFT-LCD，ThinFilmTransistorLiquidCrystalDisplay）相關(guān)從業(yè)者開發(fā)的熱點(diǎn)新一代光源ADDINEN.CITE<EndNote><Cite><Author>劉秀娟</Author><Year>2017</Year><RecNum>37</RecNum><DisplayText><styleface="superscript">[3]</style></DisplayText><record><rec-number>37</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">37</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>劉秀娟</author><author>趙英</author><author>蘇遵惠</author><author>成森繼</author></authors></contributors><auth-address>中國電子技術(shù)標(biāo)準(zhǔn)化研究院;惠州市華量半導(dǎo)體有限公司;TCL集團(tuán)股份有限公司;</auth-address><titles><title>液晶電視接收機(jī)用LED背光組件技術(shù)及標(biāo)準(zhǔn)化</title><secondary-title>信息技術(shù)與標(biāo)準(zhǔn)化</secondary-title></titles><periodical><full-title>信息技術(shù)與標(biāo)準(zhǔn)化</full-title></periodical><pages>25-29</pages><number>06</number><keywords><keyword>液晶電視接收機(jī)</keyword><keyword>直下式</keyword><keyword>LED背光組件</keyword><keyword>標(biāo)準(zhǔn)化</keyword></keywords><dates><year>2017</year></dates><isbn>1671-539X</isbn><call-num>11-4753/TN</call-num><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"劉秀娟,2017#37"3]。但是，現(xiàn)在的液晶顯示器面臨的問題就是功耗較大且光利用率低；除此之外，液晶顯示器的其他性能指標(biāo)如對比度，飽和度等方面都亟需改善。1.3.1白光LED簡介LED（Light-emittingDiode）即發(fā)光二極管是一種半導(dǎo)體固體發(fā)光器件，它可以將電能轉(zhuǎn)化成光能并具有二極管特性，當(dāng)兩端加上正向電壓時，其半導(dǎo)體中的載流子發(fā)生復(fù)合引起光子發(fā)射而產(chǎn)生光ADDINEN.CITEADDINEN.CITE.DATA[\o"Hasegawa‐Ohira,2019#46"4,\o"Keyser,2019#50"5]。1993年，日本日亞公司領(lǐng)先在藍(lán)色GaNLED技術(shù)上實(shí)現(xiàn)產(chǎn)業(yè)化突破，接著該公司的S-Nakamure采用MOCVD法成功的制備出了高效率的InGaN藍(lán)光、綠光LED，1996年又率先開發(fā)出發(fā)黃光的YAG熒光粉，將其覆蓋在藍(lán)色LED上，從而實(shí)現(xiàn)了白光LED的合成，并于1998年實(shí)現(xiàn)了產(chǎn)業(yè)化，迅速的進(jìn)入了照明市場ADDINEN.CITE<EndNote><Cite><Author>Lu</Author><Year>2019</Year><RecNum>47</RecNum><DisplayText><styleface="superscript">[6]</style></DisplayText><record><rec-number>47</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">47</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>ZhiminLu</author><author>PengfeiBai</author><author>BinHuang</author><author>AlexHenzen</author><author>ReinderCoehoorn</author><author>HuaLiao</author><author>GuofuZhou</author></authors></contributors><auth-address>GuangdongProvincialKeyLaboratoryofOpticalInformationMaterialsandTechnology&InstituteofElectronicPaperDisplays,SouthChinaAcademyofAdvancedOptoelectronics,SouthChinaNormalUniversity,Guangzhou510006,China;;NationalCenterforInternationalResearchonGreenOptoelectronics,SouthChinaNormalUniversity,Guangzhou510006,China;;ShenzhenGuohuaOptoelectronicsTech.Co.Ltd.,Shenzhen518110,China;;AcademyofShenzhenGuohuaOptoelectronics,Shenzhen518110,China;;InstituteofSolarEnergy,YunnanNormalUniversity,Kunming650500,China</auth-address><titles><title>Experimentalinvestigationonthethermalperformanceofthree-dimensionalvaporchamberforLEDautomotiveheadlamps</title><secondary-title>AppliedThermalEngineering</secondary-title></titles><periodical><full-title>AppliedThermalEngineering</full-title></periodical><volume>157</volume><keywords><keyword>Vaporchamber</keyword><keyword>Heatpipe</keyword><keyword>Thermalperformance</keyword></keywords><dates><year>2019</year></dates><isbn>1359-4311</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Lu,2019#47"6]，為LED找到了新的舞臺，自此白光LED逐漸走入人們的視線，引起了越來越多的關(guān)注。白光LED在日常生活中主要有兩項(xiàng)十分重要的應(yīng)用，顯示用以及照明用。白光LED作為一種全新的固態(tài)照明光源，由于其省電（白熾燈的1/8，熒光燈的1/2）、體積小、效率高、壽命長、反應(yīng)速度快、抗震耐沖、可回收、環(huán)保無污染等優(yōu)點(diǎn)深受人們的喜歡，也因此被稱為21世紀(jì)的綠色照明光源ADDINEN.CITEADDINEN.CITE.DATA[\o"Lu,2019#47"6,\o"Nissim-Levi,2019#49"7]。而白光LED的進(jìn)一步研究與發(fā)展也成了各國工作者當(dāng)今以及今后的研究重點(diǎn)。目前，實(shí)現(xiàn)背光源白光LED的方案主要有以下三種:三基色LED芯片組合型,紫外LED芯片加熒光粉轉(zhuǎn)換型和藍(lán)光LED芯片加綠色和紅色熒光粉轉(zhuǎn)換型，目前主要采用的是藍(lán)光LED芯片加綠色和紅色熒光粉轉(zhuǎn)換型白光LED，以波長為460~470nm的藍(lán)光LED芯片為發(fā)光光源，在芯片上涂覆綠色和紅色熒光粉，混合通過熒光粉層的藍(lán)光和熒光粉發(fā)射的綠光和紅光形成近似白光發(fā)射光譜ADDINEN.CITE<EndNote><Cite><Author>Tschannerl</Author><Year>2019</Year><RecNum>48</RecNum><DisplayText><styleface="superscript">[8]</style></DisplayText><record><rec-number>48</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">48</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>JuliusTschannerl</author><author>JinchangRen</author><author>HuiminZhao</author><author>Fu-JenKao</author><author>StephenMarshall</author><author>PeterYuen</author></authors></contributors><auth-address>CentreforSignalandImageProcessing,UniversityofStrathclyde,Glasgow,UK;;SchoolofComputerScience,GuangdongPolytechnicNormalUniversity,Guangzhou,China;;InstituteofBiophotonics,NationalYang-MingUniversity,Taipei,Taiwan;;Electro-Optics&RemoteSensing,CentreforElectronicsWarfare,Information&Cyber(CEWIC),CranfieldUniversity,Swindon,U.K.</auth-address><titles><title>HyperspectralimagereconstructionusingMulti-colourandTime-multiplexedLEDillumination</title><secondary-title>OpticsandLasersinEngineering</secondary-title></titles><periodical><full-title>OpticsandLasersinEngineering</full-title></periodical><volume>121</volume><keywords><keyword>Hyperspectralimaging(HSI)</keyword><keyword>Deeplearning</keyword><keyword>Spectralreconstruction</keyword><keyword>LEDillumination</keyword></keywords><dates><year>2019</year></dates><isbn>0143-8166</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Tschannerl,2019#48"8]。在器件應(yīng)用中，一般芯片選擇的是波長為460~470nm的GaN芯片，熒光粉選擇的是β-SiAlON:Eu2+綠色熒光粉，氟化物、氮化物紅粉。由于這種方法采用單個LED芯片與單種綠、紅色熒光粉，操作上較易實(shí)現(xiàn)，成本低，是目前市場應(yīng)用白光LED的主流。其不足之處在于綠色熒光粉的發(fā)射峰較寬，色域范圍窄，熱穩(wěn)定性仍需改善等問題，顯色指數(shù)低，不能應(yīng)用于高端顯示領(lǐng)域。方法二與方法三可以統(tǒng)稱為熒光粉轉(zhuǎn)換型白光LEDs（phosphorsconvertedwhiteLEDs，英文簡稱pc-WLEDs）ADDINEN.CITE<EndNote><Cite><Author>Nissim-Levi</Author><Year>2019</Year><RecNum>49</RecNum><DisplayText><styleface="superscript">[7]</style></DisplayText><record><rec-number>49</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">49</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>AdaNissim-Levi</author><author>MaayanKitron</author><author>YairNishri</author><author>RinatOvadia</author><author>IzhakForer</author><author>MichalOren-Shamir</author></authors></contributors><auth-address>DepartmentofOrnamentalPlantsandAgriculturalBiotechnology,AgriculturalResearchOrganization,VolcaniCenter,68HaMaccabimRoad,P.O.B15159,RishonLeZion,7505101,Israel;;CentralandNorthernAravaResearchandDevelopment,D.N.AravaSapir,86825,Israel;;TheAgriculturalExtensionServiceofIsrael,68HamakkabimRoad,RishonLeZion,P.O.B30BeitDagan,50200,Israel</auth-address><titles><title>EffectsofblueandredLEDlightsongrowthandfloweringofChrysanthemummorifolium</title><secondary-title>ScientiaHorticulturae</secondary-title></titles><periodical><full-title>ScientiaHorticulturae</full-title></periodical><volume>254</volume><keywords><keyword>Chrysanthemummorifolium</keyword><keyword>Light-emittingdiode(LED)</keyword><keyword>Obligateshortday</keyword><keyword>Intermittentlight</keyword><keyword>Constantlight</keyword></keywords><dates><year>2019</year></dates><isbn>0304-4238</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Nissim-Levi,2019#49"7]。另外，白光LED還廣泛地應(yīng)用于背光源顯示領(lǐng)域中，介紹如下。1.3.2背光顯示技術(shù)用白光LED冷陰極熒光燈（CCFL,ColdCathodeFluorescentLamp），由于其具有亮度高且發(fā)光效率高等優(yōu)點(diǎn)，而廣泛應(yīng)用于背光源顯示器中。但是其含有汞且體積大等缺點(diǎn)，已逐漸不能滿足市場的需要。白光LED在近些年發(fā)展迅速，并且在很多應(yīng)用上發(fā)揮著重要的作用。目前普遍采用由藍(lán)光LED和可被藍(lán)光有效激發(fā)的綠色和紅色熒光粉組成的熒光轉(zhuǎn)換型方案。這種發(fā)光是由熒光粉受到LED激發(fā)和LED所發(fā)出的白光組合而成。熒光粉是控制白光LED發(fā)光特性的關(guān)鍵材料，這些特性包括背光中的色彩渲染和色彩再現(xiàn)ADDINEN.CITEADDINEN.CITE.DATA[\o"Deng,2019#55"9-11]。白光LED作為高效的綠色光源，具有節(jié)能、環(huán)保、體積小和壽命長等優(yōu)點(diǎn)，采用白光LED作為背光源顯示器是目前的主流方案。在背光技術(shù)中，三個關(guān)鍵技術(shù)參數(shù)，即色域，發(fā)光效率和可靠性，主要由白光LED材料決定。在三個參數(shù)中，色域又是極其重要的一個指標(biāo)，顯示器的色域越廣，呈現(xiàn)出的畫面的色彩就更加豐富，靈動。所以為了提高顯示效果，目前大家都在致力于提升液晶顯示器的色域，根據(jù)國際標(biāo)準(zhǔn)來說色域覆蓋率在90%NTSC（NationalTelevisionStandardsCommittee,美國國家電視標(biāo)準(zhǔn)委員會）以上就叫做廣色域ADDINEN.CITE<EndNote><Cite><Author>G?k?e</Author><Year>2019</Year><RecNum>52</RecNum><DisplayText><styleface="superscript">[10]</style></DisplayText><record><rec-number>52</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">52</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>MelisG?k?e</author><author>DenizKo?yi?it</author></authors></contributors><auth-address>DepartmentofPhysics,Ayd?nAdnanMenderesUniversity,Ayd?n,09010,Turkey</auth-address><titles><title>SpectroscopicinvestigationsofDy3+dopedborogermanateglassesforlaserandwLEDapplications</title><secondary-title>OpticalMaterials</secondary-title></titles><periodical><full-title>OpticalMaterials</full-title></periodical><volume>89</volume><keywords><keyword>Borogermanate</keyword><keyword>Dy3+ion</keyword><keyword>Judd-Ofeltanalysis</keyword><keyword>Whitelightemission</keyword><keyword>Radiativeproperties</keyword></keywords><dates><year>2019</year></dates><isbn>0925-3467</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"G?k?e,2019#52"10]。在提升性能方面來說，除了GaN基的藍(lán)色LED芯片，綠光和紅光發(fā)射源的發(fā)光性能（峰位和半高寬）對色域的空間也有直接的影響。因?yàn)槿说难劬τ诰G光非常的敏感，所以綠色能夠非常容易的辨別。在商業(yè)廣色域背光源設(shè)備中，綠色的β-SiAlON:Eu2+（峰值出現(xiàn)在527nm）被認(rèn)為是一種合適的選擇。但是它的半高寬FWHM為50nm，這限制了背光源應(yīng)用的可得到的最大色域ADDINEN.CITE<EndNote><Cite><Author>Liu</Author><Year>2019</Year><RecNum>51</RecNum><DisplayText><styleface="superscript">[12]</style></DisplayText><record><rec-number>51</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">51</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>ShengnanLiu</author><author>GuangzhangShao</author><author>LingDing</author><author>JianmingLiu</author><author>WeidongXiang</author><author>XiaojuanLiang</author></authors></contributors><auth-address>CollegeofChemistryandMaterialsEngineering,WenzhouUniversity,Wenzhou325035,People’sRepublicofChina</auth-address><titles><title>Sn-dopedCsPbBr3QDsglasseswithexcellentstabilityandopticalpropertiesforWLED</title><secondary-title>ChemicalEngineeringJournal</secondary-title></titles><periodical><full-title>ChemicalEngineeringJournal</full-title></periodical><volume>361</volume><keywords><keyword>Sn-doped</keyword><keyword>CsPbBr3</keyword><keyword>Quantumdots</keyword><keyword>Glass</keyword><keyword>WLED</keyword></keywords><dates><year>2019</year></dates><isbn>1385-8947</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Liu,2019#51"12]。所以目前的存在于背光源設(shè)備中最主要的挑戰(zhàn)就是找到新的具有特定峰位的，更窄的綠色發(fā)光源。1.3.3背光源顯示技術(shù)用高亮度、高熱穩(wěn)定性窄帶熒光粉的研發(fā)隨著顯示技術(shù)的發(fā)展，目前液晶顯示器（LCD）在日常生活中無處不在，其應(yīng)用范圍包括智能手機(jī)，平板電腦，電腦，大屏幕電視和投影儀。白光LED由于具有較大的色域，高亮度，低功耗和無汞，已逐漸取代了傳統(tǒng)的冷陰極熒光燈。應(yīng)用于現(xiàn)代LCD背光組件技術(shù)中，多芯片白光LED，包括紅色，綠色和藍(lán)色LED芯片的效率不同，且各自的驅(qū)動電路和復(fù)雜的反饋系統(tǒng)也導(dǎo)致了高的成本ADDINEN.CITE<EndNote><Cite><Author>Reddy</Author><Year>2019</Year><RecNum>54</RecNum><DisplayText><styleface="superscript">[13]</style></DisplayText><record><rec-number>54</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">54</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>D.V.KrishnaReddy</author><author>T.SambasivaRao</author><author>Sk.Taherunnisa</author><author>A.Suchocki</author><author>Ya.Zhydachevskyy</author><author>M.Piasecki</author><author>M.RamiReddy</author></authors></contributors><auth-address>DepartmentofPhysics,AcharyaNagarjunaUniversity,NagarjunaNagar,522510,A.P,India;;InstituteofPhysics,PolishAcademyofSciences,Al.Lotników32/46,Warszawa02-668,Poland;;InstituteofPhysics,J.DlugoszUniversity,Ul.ArmiiKrajowej13/15,Czestochowa42-200,Poland</auth-address><titles><title>Tunablewhitelightbyvaryingexcitationsinyttriumaluminobismuthborosilicateglassesco-dopedwithDy3+-Eu3+forcoolWLEDapplications</title><secondary-title>JournalofNon-CrystallineSolids</secondary-title></titles><periodical><full-title>JournalofNon-CrystallineSolids</full-title></periodical><volume>513</volume><keywords><keyword>YABiBS:Dy3+-Eu3+co-dopedglasses</keyword><keyword>Tunableemission</keyword><keyword>Coolwhitelight</keyword><keyword>Energytransfer</keyword><keyword>I-Hcurvefitting</keyword></keywords><dates><year>2019</year></dates><isbn>0022-3093</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Reddy,2019#54"13]。此外，綠色LED的效率比紅色和藍(lán)色低得多，被稱為綠色鴻溝。相比之下，熒光粉轉(zhuǎn)換的白光LED，由單一的LED芯片和熒光粉結(jié)合，由于其高效率，低成本和高穩(wěn)定性而受到廣泛的應(yīng)用。為了實(shí)現(xiàn)廣色域和高色彩的還原，熒光粉的發(fā)射峰應(yīng)該很好的匹配顯示器的RGB顏色過濾器，而且熒光粉需要具有窄的發(fā)射帶，才能保證通過彩色濾光片后會損失較少的能量，進(jìn)而保證高的色純度ADDINEN.CITE<EndNote><Cite><Author>Xia</Author><Year>2019</Year><RecNum>56</RecNum><DisplayText><styleface="superscript">[14]</style></DisplayText><record><rec-number>56</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">56</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>LibinXia</author><author>QinghuiXiao</author><author>XinyuYe</author><author>WeixiongYou</author><author>TongxiangLiang</author></authors></contributors><auth-address>SchoolofMaterialsscienceandEngineeringJiangxiUniversityofScienceandTechnologyGanzhouChina;;KeyLaboratoryofRareEarthLuminescenceMaterialsandDevicesofJiangxiProvinceGanzhouChina</auth-address><titles><title>ErosionbehaviorandluminescencepropertiesofY₃Al₅O₁₂:Ce³⁺‐embeddedcalciumbismuthborateglass‐ceramicsforWLEDs</title><secondary-title>JournaloftheAmericanCeramicSociety</secondary-title></titles><periodical><full-title>JournaloftheAmericanCeramicSociety</full-title></periodical><volume>102</volume><number>4</number><keywords><keyword>Bismuthborateglass</keyword><keyword>Glass‐ceramics</keyword><keyword>Luminescence</keyword></keywords><dates><year>2019</year></dates><isbn>0002-7820</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Xia,2019#56"14]。因此，為了獲得高效率和廣色域的背光源組件，目前需要研發(fā)一些新型的具有適當(dāng)發(fā)射峰的窄帶熒光粉。下面主要介紹目前顯示技術(shù)用的各類窄帶熒光粉。顯示技術(shù)用量子點(diǎn)材料隨著量子點(diǎn)技術(shù)在近幾年來的高速發(fā)展，由于其發(fā)射光譜具有較高的穩(wěn)定性，熒光作用時間較長，半高寬窄等特性，在顯示技術(shù)的應(yīng)用方面受到廣泛的關(guān)注。量子點(diǎn)的本身特性使得顯示出的畫面可以具有更飽滿的色彩。同時量子點(diǎn)較高的光轉(zhuǎn)換率也會擴(kuò)寬色域并且背光效率也會得到提升。與具有75％NTSC色域的傳統(tǒng)CCFL（ColdCathodeFluorescentLamp,冷陰極管）相比較，含Cd的量子點(diǎn)集成白光LED背光承諾大于100％NTSC的色域，但由于有害Cd化合物的使用限制，應(yīng)用也受到限制ADDINEN.CITE<EndNote><Cite><Author>Bao</Author><Year>2019</Year><RecNum>22</RecNum><DisplayText><styleface="superscript">[15]</style></DisplayText><record><rec-number>22</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">22</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>ShuochenBao</author><author>XuanCheng</author><author>YingZhang</author><author>HuifangXu</author><author>JianglinQiu</author><author>YaominDeng</author></authors></contributors><auth-address>DepartmentofMaterialsScienceandEngineering,CollegeofMaterials,XiamenUniversity,Xiamen,Fujian,361005,China;;FujianKeyLaboratoryofAdvancedMaterials(XiamenUniversity),Xiamen,Fujian,361005,China</auth-address><titles><title>Effectofeuropiumcontentsonstructuresandluminescencepropertiesoftunablelight-emittingsiliconoxynitridephosphors</title><secondary-title>CeramicsInternational</secondary-title></titles><periodical><full-title>CeramicsInternational</full-title></periodical><keywords><keyword>A.Tunable</keyword><keyword>B.Whiteemitting</keyword><keyword>C.Structure</keyword></keywords><dates><year>2019</year></dates><isbn>0272-8842</isbn><urls></urls><remote-database-provider>Cnki</remote-database-provider></record></Cite></EndNote>[\o"Bao,2019#22"15]。與含有Cd的量子點(diǎn)相比，無毒的InP/ZnS量子點(diǎn)由于相當(dāng)寬的發(fā)射帶所以僅產(chǎn)生87％NTSC的色域ADDINEN.CITE<EndNote><Cite><Author>Bao</Author><Year>2018</Year><RecNum>10</RecNum><DisplayText><styleface="superscript">[16]</style></DisplayText><record><rec-number>10</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">10</key><keyapp="ENWeb"db-id="">0</key></foreign-keys><ref-typename="JournalArticle">17</ref-type><contributors><authors><author>Bao,Z.</author><author>Wang,H.C.</author><author>Jiang,Z.F.</author><author>Chung,R.J.</author><author>Liu,R.S.</author></authors></contributors><titles><title>ContinuousSynthesisofHighlyStableCs4PbBr6PerovskiteMicrocrystalsbyaMicrofluidicSystemandTheirApplicationinWhite-Light-EmittingDiodes</title><secondary-title>InorgChem</secondary-title><alt-title>Inorganicchemistry</alt-title></titles><periodical><full-title>InorgChem</full-title><abbr-1>Inorganicchemistry</abbr-1></periodical><alt-periodical><full-title>InorgChem</full-title><abbr-1>Inorganicchemistry</abbr-1></alt-periodical><pages>13071-13074</pages><volume>57</volume><number>21</number><dates><year>2018</year><pub-dates><date>Nov5</date></pub-dates></dates><isbn>1520-510X(Electronic) 0020-1669(Linking)</isbn><accession-num>30351076</accession-num><urls><related-urls><url>/pubmed/30351076</url></related-urls></urls><electronic-resource-num>10.1021/acs.inorgchem.8b01985</electronic-resource-num></record></Cite></EndNote>[\o"Bao,2018#10"16]。此外，其他的量子點(diǎn)材料，比如鈣鈦礦CsPbBr3的量子點(diǎn)具有很高的光致發(fā)光量子產(chǎn)率，并且擁有超級窄的發(fā)光帶，半高寬僅僅只有20nm，所以最近被認(rèn)為是很有前途的窄帶綠光材料ADDINEN.CITE<EndNote><Cite><Author>Bao</Author><Year>2018</Year><RecNum>10</RecNum><DisplayText><styleface="superscript">[16]</style></DisplayText><record><rec-number>10</rec-number><foreign-keys><keyapp="EN"db-id="e5wwt9vfgztz5newpa1xpet6wx0fpdsxpese">10</key><keyapp="ENWeb"db-id="">0</key></foreign-keys><ref-typename