Photoacoustic and photoelectrochemical current spectra of combined CdS/CdSe quantum dots adsorbed on nanostructured TiO2 electrodes, together with photovoltaic characteristics

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	Photoacoustic and photoelectrochemical current spectra of combined CdS/CdSe quantum dots adsorbed on nanostructured TiO2 electrodes, together with photovoltaic characteristics
	Toyoda, T ; Oshikane, K ; Li, DM ; Luo, YH ; Meng, QB ; Shen, Q
刊名	JOURNAL OF APPLIED PHYSICS
	2010
卷号	108 期号:11
关键词	CARRIER DYNAMIC INVESTIGATIONS SOLAR-CELLS OPTICAL-ABSORPTION CDSE NANOCRYSTALS CONVERSION EFFICIENCY INVERSE OPAL FILMS PHOTOSENSITIZATION SPECTROSCOPY MECHANISMS
ISSN号	0021-8979
通讯作者	Toyoda, T (reprint author), Univ Electrocommun, Dept Engn Sci, Fac Informat & Engn, 1-5-1 Chofugaoka, Tokyo 1828585, Japan.
中文摘要	We describe the performance of quantum dot (QD)-sensitized solar cells based on CdSe QD sensitizer on a preadsorbed layer of CdS QDs (combined CdS/CdSe QDs) together with the basic studies of optical absorption and photoeletrochemical current characteristics. It can be observed from optical absorption measurements using photoacoustic spectroscopy that the CdSe QDs on the nanostructured TiO2 electrodes preadsorbed with CdS QDs grow more rapidly during the initial adsorption process than those without preadsorption. The maximum incident photon-to-current conversion efficiency (IPCE) value of the CdSe QDs on the nanostructured TiO2 electrodes preadsorbed with CdS QDs is higher than that without preadsorption, indicating the possibilities of decreases in recombination centers, interface states, and inverse transfer rate. Short-circuit current (J(sc)) in combined CdS/CdSe QD-sensitized solar cells shows maximum with the increase in CdSe QDs adsorption times between 2 and 24 h. The other parameters, open-circuit voltage (V-oc) and fill factor, is independent of adsorption time. Therefore, the photovoltaic conversion efficiency (eta) of combined CdS/CdSe QD-sensitized solar cell shows a maximum value of 3.5%. (c) 2010 American Institute of Physics. [doi:10.1063/1.3517066]
收录类别	SCI
资助信息	Japan Science and Technology Agency (JST); JST PRESTO; Ministry of Education, Sports, Science and Technology of the Japanese Government [21020014, 21310073]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/50896]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Toyoda, T,Oshikane, K,Li, DM,et al. Photoacoustic and photoelectrochemical current spectra of combined CdS/CdSe quantum dots adsorbed on nanostructured TiO2 electrodes, together with photovoltaic characteristics[J]. JOURNAL OF APPLIED PHYSICS,2010,108(11).
APA	Toyoda, T,Oshikane, K,Li, DM,Luo, YH,Meng, QB,&Shen, Q.(2010).Photoacoustic and photoelectrochemical current spectra of combined CdS/CdSe quantum dots adsorbed on nanostructured TiO2 electrodes, together with photovoltaic characteristics.JOURNAL OF APPLIED PHYSICS,108(11).
MLA	Toyoda, T,et al."Photoacoustic and photoelectrochemical current spectra of combined CdS/CdSe quantum dots adsorbed on nanostructured TiO2 electrodes, together with photovoltaic characteristics".JOURNAL OF APPLIED PHYSICS 108.11(2010).