On the origin of increased open circuit voltage of dye-sensitized solar cells using 4-tert-butyl pyridine as additive to the electrolyte

被引：94

作者：

Duerr, M. ^{[1
]}

Yasuda, A. ^{[1
]}

Nelles, G. ^{[1
]}

机构：

[1] Sony Deutschland GmbH, Mat Sci Lab, D-70327 Stuttgart, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 06期

关键词：

D O I：

10.1063/1.2266386

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A combination of electrical measurements and surface analysis techniques was used to investigate the electronic structure of the TiO2/electrolyte interface and its change upon addition of 4-tert-butyl pyridine to the electrolyte. A reduced interface defect density and a resulting reduction of charge carrier recombination were found to be the main mechanism for an increased open circuit voltage of dye-sensitized solar cells with 4-tert-butyl pyridine in the electrolyte. The reduction of interface defect states was traced back to specific binding of 4-tert-butyl pyridine at defect sites on the TiO2 surface. (c) 2006 American Institute of Physics.

引用

页数：3

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