Nanoporous TiO2/Cu1.8S heterojunctions for solar energy conversion

被引：68

作者：

Reijnen, L ^{[1
]}

Meester, B ^{[1
]}

Goossens, A ^{[1
]}

Schoonman, J ^{[1
]}

机构：

[1] Delft Univ Technol, NL-2628 BL Delft, Netherlands

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2002年 / 19卷 / 1-2期

关键词：

solar cells; photovoltaic; TiO2; CuxS; atomic layer chemical vapor deposition; nanoporous materials;

D O I：

10.1016/S0928-4931(01)00406-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of p-type Cu1.8S have been deposited onto smooth and nanoporous n-type TiO2 with Atomic Layer Chemical Vapor Deposition (AL-CVD). As precursors, Cu(thd)(2) and H2S have been used and self-limited deposition takes place between 125 and 240 degreesC. The crystalline phase and growth rate strongly depend on the process conditions; below 175 degreesC CuS and above this temperature, Cu, 8 S is formed. Photospectroscopy shows that Cu1.8S has a bandgap of 1.75 eV and an absorption coefficient of 2.3 X 10(4) cm(-1) at 500 nm. A 35-nm-thick Cu1.8S film on flat TiO2 substrates shows a short circuit photocurrent of 30 muA/cm(2) and an open circuit photovoltage of 200 mV at broad-band irradiation of 2.8 kW/m(2). The internal quantum efficiency is 6% at 500 nm. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：311 / 314

页数：4

共 6 条

[1]

Hewig G. H., 1982, Conference Record of the Sixteenth IEEE Photovoltaic Specialists Conference - 1982, P713

[2] APPLICATION OF LUMINESCENCE IN STUDIES OF PHOTO-VOLTAIC PROPERTIES OF CU-CD-S SOLAR-CELLS [J].