CuInS2 quantum dots coated with cds as high-performance sensitizers for TiO2 electrodes in hydrogen production and photovoltaic applications

T. L. Li, H. Teng

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

We demonstrate a high-performance photoanode composed of a nanoporous TiO2 film co-sensitized with CuInS2 quantum dots (QDs) and CdS polycrystalline layers, exhibiting the excellent performance in both photosynthetic and photovoltaic applications. The CuInS2 QDs are synthesized via a solvothermal route and the average particle size is 3.5 nm, attached on TiO2 surface by assistance of bifunctional linker. The subsequent CdS layers are coated using successive ionic layer adsorption and reaction. The back reaction of interfacial charge recombination can be prohibited by the CdS coating. Besides, the CdS shell coating results in remission of the quantum confinement of the QDs, leading to a widening of optical absorption spectra. In a photosynthetic photoelectrochemical cell, this heterostructural electrode exhibits a saturated photocurrent of 16 mA cm -2 under illumination of AM 1.5G at full sun intensity. On the other hand, this high-performance photoanode exhibits a power conversion efficiency of 4.08% in a sandwich-type quantum dot sensitized solar cells (QDSSCs) using CuS as counter electrode. The superior performance is mainly ascribed to the extension of the absorption spectra and significant enhancement of charge separation via CdS coating.

原文English
主出版物標題Photovoltaics for the 21st Century 7
發行者Electrochemical Society Inc.
頁面221-231
頁數11
版本4
ISBN(電子)9781607682585
ISBN(列印)9781566779043
DOIs
出版狀態Published - 2011
事件Photovoltaics for the 21st Century 7 - 220th ECS Meeting - Boston, MA, United States
持續時間: 2011 十月 92011 十月 14

出版系列

名字ECS Transactions
號碼4
41
ISSN(列印)1938-5862
ISSN(電子)1938-6737

Other

OtherPhotovoltaics for the 21st Century 7 - 220th ECS Meeting
國家/地區United States
城市Boston, MA
期間11-10-0911-10-14

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

指紋

深入研究「CuInS<sub>2</sub> quantum dots coated with cds as high-performance sensitizers for TiO<sub>2</sub> electrodes in hydrogen production and photovoltaic applications」主題。共同形成了獨特的指紋。

引用此