QQ客服 官方微博 反馈留言

	N,N'-对羧苄基吲哚三菁敏化纳米TiO_2电极的研究; Photoelectrochemical studies of the TiO2 nanocrystalline electrode sensitized by novel cyanine dye
	过家好 ; 何晓英 ; 郭敏 ; 蔡生民 ; 陈秀英 ; 彭孝军
	2004
关键词	染料敏化 TiO_2纳米晶膜电极 光电化学 N&apos N dye sensitization TiO2 nanocrystalline electrode photoelectrochemistry cyanine dye -对羧苄基吲哚三菁
英文摘要	应用光电化学方法研究了N,N'-对羧苄基吲哚三菁(Cy5)染料敏化TiO2纳米晶电极的光电化学行为,优化了敏化的条件.结合Cy5的循环伏安曲线和光吸收阈值,初步确定Cy5电子基态和激发态能级位置.结果表明,Cy5电子激发态能级位置能与TiO2纳米粒子导带边位置相匹配,因而使用该染料敏化可以显著提高TiO2纳米晶的光电流,使TiO2纳米晶电极吸收波长由紫外光区红移至可见光区和近红外区,光电转换效率得到明显改善,在膜厚为6.5μm、敏化时间为6h的条件下IPCE值(incidentphoto-to-electricityconversionefficiency)最高可达46.4%,总的光电转换效率...; The photoelectrochemical behaviors of the TiO2 nanocrystalline electrode sensitized by Cy5 (N-carboxylbenzyl-3, 3-dimethyl-3 H-indole squarylium cyanine dye) were reported. The sensitized conditions were optimized. The ground state level and the excited state level of the dye were determined by using the cyclic voltammetry and the optical absorption spectroscopy. The results show that the excited state level of this dye matches the conduction band edge of TiO2 nanoparticles. Therefore the sensitization of the dye can obviously increase the photocurrent density of TiO2 nanocrystalline electrode and results in a red-shift of optical absorption from the ultra-violet region to the visible and near infra-red region. As a result, the light-to-electricity conversion efficiency was greatly improved and the maximum value of IPCE reached 46.4% and eta was 1.70% when the TiO2 nanostructured porous film was 6.5 mum thick and was sensitized for 6 h.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000223283000013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 4; 08; 849-853; 20
语种	中文
出处	万方 ; 知网 ; SCI
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/80080]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	过家好,何晓英,郭敏,等. N,N'-对羧苄基吲哚三菁敏化纳米TiO_2电极的研究, Photoelectrochemical studies of the TiO2 nanocrystalline electrode sensitized by novel cyanine dye. 2004-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。