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ZnO Quantum-dot Modified Silicone Resins with Tunable Luminescence and High Refractive Index

資料類型：

PDF文件

關(guān)鍵詞：

quantum-dot silicone luminescence refractive index

資料大小：

108K

所屬學(xué)科：

分子表征

來(lái)源：

第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集（2013.6.2-6 武漢）

簡(jiǎn)介：

Duetotheirhighpowerefficiency,goodreliabilityandlonglifetime,etc,solidstatelightingemittingdiodes(LEDs)haveattractedgreatinterestsforgeneralilluminationcl].Inconventionallow-powerLEDtechnology,transparentepoxyresinsareemployedaspackagingmaterials.However,asthepowerincreases,thesevereyellowingofepoxyresinswouldoccurandsignificantlyreducethelifetimeofLEDsC2].Siliconeresinsareakindofhighlytransparentmaterialswithexcellentheatresistantproperty,servingasalternativepackagingmaterialstoepoxyresins[3].Wehavereportedthevisible-light-transparentandemission-tunableZn0quantumdot(QD)/siliconecompositesandZnoQDSi02/siliconecomposite[4‘5].Nonetheless,theemissionwavelengthisinalimitedrangeandthestabilityisnotsatisfactoryenough.Inthepaper,surfacemodifiedZnoQDsviasilanizationduringthegrowthprocesswereuniformlydispersedinasiliconeresinbyasolventmixingmethod.Thecompositesarevisible-light-transparentandstableinfluorescencebeforeandafterprocessing.AsthesizeofZnoQDdecreases,theemissionpeakchangesfrom523t0405nmunderUV-Iightirradiation,showingobviousquantumsizeeffect.TheemissionpeakofsilanesurfacemodifiedZnoQD/siliconecompositesred-shiftedonlyl-4nm,showinghigherstabilitycomparedtothat(8-38nm)oftheunmodifiedZnoQD/siliconecomposites.Inaddition,astheZnoQDmassfractionincreases,therefractiveindexofthecompositesincreases.ThenovelZnoQDmodifiedsiliconecompositeshavepotentialapplicationsinLEDilluminationanddisplaytechnologies.

作者：

H. Q. Shi, S. Y. Fu

上傳時(shí)間：

2013-06-27 13:17:18

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