資源描述：
《寬禁帶納米半導(dǎo)體材料制備及其光學(xué)性能研究》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、南京航空航天大學(xué)碩士學(xué)位論文寬禁帶納米半導(dǎo)體材料制備及其光學(xué)性能研究姓名：咸小剛申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：郭萬(wàn)林20090301寬禁帶納米半導(dǎo)體材料制備及其光學(xué)性能研究AbstractBecauseofitsexcellentoptical,electricalproperties,TiO2nano-materialshavebeenwidelyusedinphotovoltaicconversion,electrochromicwindows,solarcells,andphotocatalysis.Wide-b
2、andgapoxidesemiconductorZnOhasexcellentopticalpropertiesfrombluetoultraviolet.Afterdopedwithmagneticmaterials,itexpectedtobemadeupofthemagneto-opticaldevices.Thequalityoftheseperformancesinfluencedtoalargeextentbythemethodofpreparation,post-processingtechniquesandthed
3、opedelements.Therefore,thisarticlewillexplorethechangesintheperformanceatdifferentconditions.(1)ThePreparationandCharacterizationofNano-TiO2thinfilms.Inthestudiesofnano-titaniumdioxidefilmatroomtemperature,weusetetrabutyltitanateforprecursor,nitricacidasastabilizerand
4、thecatalyst,ethanolasasolventanddispersingagent.TheTiO2thinfilmswithdifferentthicknessbetween40and340nmhadbeenpreparedviaasol-gelmethodanddippedwiththesubstrateofquartz.Weusefieldemissionscanningelectronmicroscopeandatomicforcemicroscopytogetthemorphologyofthefilm.Ana
5、lysethecrystalbyX-raydiffractionandRamanspectroscopy.Thendiscusstheluminousintensityundertheinfluenceofdifferentthicknessfilms.(2)Two-stepHydrothermalSynthesisofZnSnano-materialsandtheiropticalproperties.ZnSisadirectwidebandgapsemiconductormaterial,andhasgoodopticalpe
6、rformance.Soitwaswidelyusedindisplays,sensors,lasersandcatalyst.Inthispaperweuseanewsyntheticmethodthatisthetwo-stephydrothermalsynthesis.FromtheXRDandRamanspectrawecandrawthatthesecondstepofthereactionmaygetthesulfur-dopedZnOandZnSnano-materialswhichoxygenwaslargelyr
7、eplacedbysulfur.Andthengivethegrowthmechanismofthischange.OpticalresearchfoundthattheluminescenceismainlyduetothedefectofZnS.Photoluminescencepeakstrengthenhancedobviouslyandchangedbysulfur-doped.Keywords:Sol-Gelmethod,Hydro-thermal,Two-stepSynthesis,Titaniumdioxide,Z
8、incOxide,Zincsulphide,Film,Nanowires,PhotoluminescenceII南京航空航天大學(xué)碩士學(xué)位論文圖表清單圖1.1不同維度下的納米材料....................................
