通过使用具有暴露的高反应性晶面的 TiO2 纳米片来提高量子点敏化太阳能电池的性能。

Improving the performance of quantum dot-sensitized solar cells by using TiO2 nanosheets with exposed highly reactive facets.

机构信息

State Key Laboratory of Molecular Reaction Dynamics, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.

出版信息

Nanotechnology. 2013 Jun 21;24(24):245401. doi: 10.1088/0957-4484/24/24/245401. Epub 2013 May 16.

DOI:10.1088/0957-4484/24/24/245401

PMID:23680858

Abstract

We demonstrated CdS quantum dot-sensitized solar cells (QDSSCs) based on anatase TiO2 nanosheets with exposed {001} and {100} facets. Under the illumination of one Sun (AM 1.5 G, 100 mW cm(-2)), the photovoltaic conversion efficiencies were 2.29% for a QDSSC based on {001}-TiO2 nanosheets, 2.18% for a QDSSC based on {100}-TiO2 nanosheets, and 1.46% for a QDSSC based on commercial Degussa P25. It was found that the exposed highly reactive facets of TiO2 nanosheets had a remarkable influence on the QDSSCs due to their better adsorption abilities for QDs, leading to the high short current density and the enhanced photovoltaic performance.

摘要

我们展示了基于锐钛矿 TiO2 纳米片的 CdS 量子点敏化太阳能电池 (QDSSC)，其具有暴露的 {001} 和 {100} 晶面。在一个太阳的照射下（AM 1.5G，100 mW cm(-2))，基于 {001}-TiO2 纳米片的 QDSSC 的光电转换效率为 2.29%，基于 {100}-TiO2 纳米片的 QDSSC 的光电转换效率为 2.18%，基于商业 Degussa P25 的 QDSSC 的光电转换效率为 1.46%。结果发现，TiO2 纳米片暴露的高反应性晶面由于对 QDs 具有更好的吸附能力，对 QDSSC 有显著影响，导致高短路电流密度和增强的光伏性能。