Photosensitization of TiO2 layers with CdSe quantum dots:: Correlation between light absorption and photoinjection

被引：78

作者：

Mora-Sero, I.

Bisquert, J.

Dittrich, Th.

Belaidi, A.

Susha, A. S.

Rogach, A. L.

机构：

[1] Univ Jaume 1, Dept Fis, Castellon de La Plana 12071, Spain

[2] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

[3] Univ Munich, Dept Phys, Photon & Optoelect Grp, D-80799 Munich, Germany

[4] Univ Munich, Ctr Nanosci, D-80799 Munich, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 40期

关键词：

D O I：

10.1021/jp074907w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Injection of photoelectrons from colloidal CdSe quantum dots (QDs) capped by thioglycolic acid into compact, ultrathin TiO2 layers was investigated by direct detection of modulated charge separation with surface photovoltage spectroscopy. A size-dependent peak related to light absorption in the CdSe QDs and charge transfer to TiO2 was observed for QDs of different sizes. Correlation between CdSe QDs absorption and photoelectron injection into TiO2 has been demonstrated. Our results show that surface photovoltage spectroscopy is a valuable tool to determine the effectiveness of carrier injection from colloidal semiconductor QDs to electron transport materials in advanced solar cell configurations.

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收藏

页码：14889 / 14892

页数：4

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