Visible light sensitisation of titanium dioxide using a phenylene vinylene polymer

被引：267

作者：

Savenije, TJ

Warman, JM

Goossens, A

机构：

[1] Delft Univ Technol, Interfac Reactor Inst, Radiat Chem Dept, NL-2629 JB Delft, Netherlands

[2] Delft Univ Technol, Inorgan Chem Lab, NL-2628 AL Delft, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 287卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)00163-8

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：

The photophysical properties of thin films of poly[2-methoxy-5-(2'-ethyl-hexyloxy), para-phenylene vinylene] (MEH-PPV) on TiO2 substrates have been investigated. Evidence for dissociation of excitons at the MEH-PPV/TiO2 interface and electron injection into the conduction band of TiO, has been found from current/voltage characteristics. The open circuit voltage is to 0.92 V for these cells and an energy conversion efficiency of 0.15% is found for white light. Capacitance measurements follow the Mott-Schottky relationship and reveal an acceptor density of N-A approximate to 9 X 10(17) cm(-3) for the polymer layers. From analysis of the luminescence as a function of the film thickness, an exciton diffusion length of 20 +/- 3 nm for MEH-PPV is derived. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：148 / 153

页数：6

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