Interpretation of Cyclic Voltammetry Measurements of Thin Semiconductor Films for Solar Fuel Applications

被引：69

作者：

Bertoluzzi, Luca ^{[1
]}

Badia-Bou, Laura ^{[1
]}

Fabregat-Santiago, Francisco ^{[1
]}

Gimenez, Sixto ^{[1
]}

Bisquert, Juan ^{[1
]}

机构：

[1] Univ Jaume 1, Dept Fis, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 08期

关键词：

WATER OXIDATION; SURFACE RECOMBINATION; HEMATITE PHOTOANODE; CHARGE-TRANSFER; IMPEDANCE; PHOTOCURRENT; HOLES; PHOTOELECTROLYSIS; PHOTOOXIDATION; CAPACITANCE;

D O I：

10.1021/jz400573t

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：

A simple model is proposed that allows interpretation of the cyclic voltammetry diagrams obtained experimentally for photoactive semiconductors with surface states or catalysts used for fuel production from sunlight. When the system is limited by charge transfer from the traps/catalyst layer and by detrapping, it is shown that only one capacitive peak is observable and is not recoverable in the return voltage scan. If the system is limited only by charge transfer and not by detrapping, two symmetric capacitive peaks can be observed in the cathodic and anodic directions. The model appears as a useful tool for the swift analysis of the electronic processes that limit fuel production.

引用

收藏

页码：1334 / 1339

页数：6

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