文献综述及外文文献翻译.doc

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1、华中科技大学文华学院毕业设计（论文）外文文献翻译（本科学生用）题目：薄膜太阳能电池的研究与发展现状学生姓名：陈刚祥学号:_080110011106_学咅B（系）：专业年级：08级电子科学与技术指导教师：周裕鸿职称或学位:讲师2012年3月28H外文文献翻译(译成中文1000字左右):【主要阅读文献不少于5篇，译文后附注文献信息，包括：作者、书名(或论文题目)、出版社(或刊物名称)、出版时问(或刊号)、页码。提供所译外文资料附件(印刷类含封面、封底、目录、翻译部分的复印件等，网站类的请附网址及原文】原文:Depleted-HeterojunctionColloidalQua

2、ntumDotSolarCellsABSTRACT:Colloidalquantumdot(CQD)photovoltaicscombinelow-costsolutionprocessabilitywithquantumsize-effecttunabilitytomatchabsorptionwiththesolarspectrum.RapidrecentadvancesinCQDphotovoltaicshaveledtoimpressive3.6%AM1.5solarpowerconversionefficiencies^Twodistinctdevicearch

3、itecturesandoperatingmechanismshavebeenadvanced.Thefirst-theSchottkydevice-wasoptimizedandexplainedintermsofadepletionregiondrivingelectron-holepairseparationonthesemiconductorsideofajunctionbetweenanopaquelow-work-functionmetalandap-typeCQDfilm.Thesecond-theexcitonicdevice-employedaCQDla

4、yeratopatransparentconductiveoxide(TCO)andwasexplainedintermsofdiffusiveexcitontransportviaenergytransferfollowedbyexcitonseparationatthetype-IIheterointerfacebetweentheCQDfilmandtheTCO.HerewefabricateCQDphotovoltaicdevicesonTCOsandshowthatourdevicesrelyontheestablishmentofadepletionregio

5、nforfield-drivenchargetransportandseparation,andthattheyalsoexploitthelargebandgapoftheTCOtoimproverectificationandblockundesiredholeextraction.Theresultantdepleted-heterojunctionsolarcellsprovidea5.1%AM1.5powerconversionefficiency.Thedevicesemployinfrared-bandgapsize-effect-tunedPbSCQDsr

6、enablingbroadbandharvestingofthesolarspectrum.Wereportthehighestopen-circuitvoltagesobservedinsolid-stateCQDsolarcellstodate,aswellasfillfactorsapproaching60%,throughthecombinationofefficientholeblocking(heterojunction)andverysmallminoritycarrierdensity(depletion)inthelarge-bandgapmoiety.

7、Solarenergyharvestingrequiresacombinationoflowcostandhighefficiencyinordertoovercomebalance仁systemscosts.Solutiori・processingoffersanattractiveroutetolowcostperareaoflight-harvestingmaterial;howeverthematerialsmustbecarefullychosentomaximizetheabsorptionofthesurfsbr