Large improvement of electron extraction from CdSe quantum dots into a TiO2 thin layer by N3 dye coabsorption

被引：45

作者：

Mora-Sero, Ivan ^{[1
]}

Dittrich, Thomas ^{[2
]}

Susha, Andrei S. ^{[3
,4
]}

Rogach, Andrey L. ^{[3
,4
]}

Bisquert, Juan ^{[1
]}

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, Photon & Optoelect Grp, Dept Phys, D-807990 Munich, Germany

[4] Univ Munich, Ctr Nanosci CeNS, D-807990 Munich, Germany

来源：

THIN SOLID FILMS | 2008年 / 516卷 / 20期

关键词：

quantum dots; dye sensitized solar cells; electron injection; surface photovoltage;

D O I：

10.1016/j.tsf.2007.12.110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Extraction of electrons and holes photogenerated in Use quantum dots (QD) of 2.3 nm diameter, is monitored by Surface Photovoltage Spectroscopy. The extraction of electrons into a thin TiO2 layer increases five-fold by absorption of N3 dye molecules on top of the QD layer. This process is facilitated by efficient hole extraction from the valence band of the QDs to the ground state of the N3 dye. Our results represent a direct measurement of charge separation in the N3/QD/TiO2 system. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：6994 / 6998

页数：5

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