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时间:2020-03-27
《超声搅拌化学浴沉积法制备大颗粒和致密的CdS薄膜.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学~E(WuliHuaxueXuebao)DecemberActaJp.一Chim.Sin.2011,27(12),2821-28252821[Article]doi:10.3866/PKU.WHXB20112821www.whxb.pku.edu.cn超声搅拌化学浴沉积法制备大颗粒和致密的CdS薄膜史成武,陈柱史高杨孙人杰’(合肥工业大学化学工程学院,合肥230009;中国科学院新型薄膜太阳电池重点实验室,合肥230031)摘要:采用超声搅拌化学浴法(UCBD)在SnO:F透明导电玻璃衬底上制备了CdS薄膜.研究了退火和CdCl处理对UC
2、BD-CdS薄膜的表面形貌、晶体结构和直接带隙的影响,比较了沉积时间对UCBD.CdS薄膜中CdS聚集体颗粒大小和堆积致密性的影响.结果表明,CdCl处理可使CdS聚集体中的小颗粒重新熔合在一起,但CdS聚集体的大小并没有改变.在UCBD-CdS薄膜的沉积过程中,CdS薄膜的横向和纵向生长速率之比会随着沉积时间的不同而改变,且沉积时问是获得大颗粒的CdS聚集体和致密的UCBD.CdS薄膜的重要影响因素.当沉积时间为40min时,获得的UCBD—CdS薄膜较致密,CdS聚集体的大小为180nm,膜厚为80.8nm,适合作为薄膜太阳电池的窗口层.关键词
3、:CdS薄膜:超声搅拌:化学浴沉积:沉积时间:退火:CdCI处理中图分类号:0646;TM914.4+2PreparationofLargeGrainandDenseCdSThinFilmsUsingUltrasonicAgitationChemicalBathDepositionSHICheng—Wu’-_CHENZhu’lSHIGao-Yang’。SUNRen-Jie’fSchoolofChemicalEngineering,HefeiUniversityofTechnology,Hefei230009,R.China;2KeyLaborato
4、ryofNovelThinSolarCells,ChineseAcademyofSciences,Hefei230031,PR.China)Abstract:WedepositedCdSthinf¨msontoF-dopedSnO2transparentconductiveglassbyultrasonicagitationchemicaIbathdeposition(UCBD).TheinfluenceoftheannealingandCdCI2.treatmentonthesurfacemorphology,crystalstructure,a
5、nddirectbandgapoftheUCBD—CdSthin州mswasinvestigated.TheefectofdepositiontimeonthegrainsizeoftheCdSaggregatesandthestackdensenessoftheUCBD.CdSthinfiJmswascompared.TheresultsrevealthatthesmallgrainsintheCdSaggregateswerereeltedtogetherandtheCdSaggregatesizedidnotchangeintheUCBD—C
6、dSthinfilmsaftertheCdCl2.treatmentprocedure.1tisinterestingthattheratioofthehorizontaJtoverticaIdepositionratevariedwithdepositiontimeoverthedepositionperiodoftheUCBD-CdSthinfilms.Thedepositiontimewasveryimpo~anltoobtainIargeCdSaggregategrainsanddenseUCBD.CdSthinfiIms.Overadep
7、ositiontimeof40mintheresultingUCBD.CdSthinfilmsweredenseandhada180nmgrainsizeofCdSaggregatesanda80.8nmofthinf¨mthickness.TheIarge.grainedanddenseUCBD.CdSthinf¨msweresuitableforthinfiImsolarcellsasawindowlayer.KeyWords:CdSthinfiIm:Ultrasonicagitation;Chemicalbathdeposition;Depo
8、sitiontimeAnnealing;CdCI2-treatmentReceived:July14201l:Revise
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