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研究论文

纳米尺度TiO_2聚苯胺多孔膜电极光电化学研究

  • 柳闽生
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  • 北京大学化学系,中科院化学所有机固体实验室

收稿日期: 1998-08-28

  修回日期: 1998-08-28

  网络出版日期: 1998-08-28

Photoelectrochemical Studies on Nanoporous TiO 2/PAn film electrode

  • Liu Minsheng Hao Yanzhong Qiao Xuebin Yang maizhi Cai Shengmin
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  • (Department of Chemistry, Peking University, Beijing 100871) Li Yongfang (Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences,Beijing,10080

Received date: 1998-08-28

  Revised date: 1998-08-28

  Online published: 1998-08-28

摘要

用光电流作用谱、光电流电势图等光电化学方法研究了TiO2/聚苯胺复合多孔膜电极在不含氧化还原对和含有不同氧化还原对体系中的光电转换过程.结果说明,TiO2/聚苯胺复合多孔膜电极为双层n-型半导体结构,TiO2多孔膜的禁带宽度为3.2eV,外层聚苯胺膜的禁带宽度为2.88eV.用导电高聚物修饰半导体电极可以使可见光区光吸收增强,光电流明显增加,产生光电流起始波长红移至>600nm,从而提高了宽禁带半导体电极的光电转换效率.

本文引用格式

柳闽生 . 纳米尺度TiO_2聚苯胺多孔膜电极光电化学研究[J]. 电化学, 1998 , 4(3) : 246 -251 . DOI: 10.61558/2993-074X.3137

Abstract

The photon to electricity conversion process of nanoporous TiO 2/PAn film electrode was studied in electrolytes with and without redox couple by using the photocurrent action spectra and potential dependence of photocurrent. It is concluded that the nanoporous TiO 2/PAn film electrode has a structure of duplex n type semiconductor layers. The band gap of PAn film is 2.88eV.The TiO 2 nanoporous film electrode modified by PAn can extend the range of optical absorption into visible and infrared region and effectively increase the photocurrent in the visible and infrared region. The photocurrent threshold shifts to>600nm and conversion efficiency of light to electricity is improved.

参考文献

1ReganBO,GratzelM.Alow-costhigh-eficiencysolarcelbasedondye-sensitizedcoloidalTiO2films.Nature,1991,353:7372EMGenies,C.Tsintavis.Electrochemicalbehaviour,chronoculmetricandkineticstudyoftheredoxmechanismofpolyamilinedeposits.J.Electroanal.Chem.1996,200:1273蔡林涛,姚士冰,周绍民.聚苯胺的成核及生长机理.化学学报,1995,53:11504RommelNoufi,Arthur.J.Nuziket.al.EnhancedStabilityofphotoelectrodeswithElectrogeneratedpolyanilinefilms.J.Electrochem.Soc.1982,129(10):22615E.M.Genies,M.Lapkowski.SpectroelectrochemicalstudiesofRedoxMechanismsinpolyanilinefilms.evidenceoftwopolaron-bipolaronsystems.Synth.Met.1987,21:1176柳闽生,郝彦忠,杨迈之,余赤贞,蔡民生等.纳米尺度TiO2微粒多孔膜电极光电化学研究.物理化学学报,1997,18:9927E.M.Genies,M.Lapkowski.Influenceoflightontheelectrochemicalbehaviourofpolyanilinefilms.evidenceoftwopolaron-bipolaronsystems.Synth.Met.1987,21:1178B-O.波利斯科夫著,张天高译,蔡生民校.光电化学太阳能转换.北京:科学出版社,1994:1979王利群,王佛松.导电聚合物-聚苯胺的研究进展.应用化学,1990,7(6):110MGRoe,JMGinderPEWiger,AJEpsteinetal.Photoexcitationofpolaronsandmolecularexcitonsinemeraldinebase.Phys.Rev.Let.,1988,60:278911YHKim,CFoster,JChiang,AJ.Heeger,Localizedchargedexcitationsinpolyaniline:Infraredphotoexcitationandprotonationstudies.Synth.Met.,1989,29:E28512柳闽生,杨迈之,郝彦忠,余赤贞,蔡生民.纳米尺度TiO2聚吡咯多孔膜电极的光电化学.高等学校化学学报,1997,18:93813S.Stafstrom,JLBredas,AJEpsteinetal,Polaronlaticeinhighlyconductingpolyaniline:Theoreticalandopticalstudies.Phys.Rev.Let.,1987,59:1464
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