PHOTOELECTROCHEMICAL BEHAVIOR OF ZN3IN2S6 SINGLE-CRYSTALS IN AQUEOUS-SOLUTIONS

被引：13
|
作者：
POULIOS, I
PAPADOPOULOS, N
机构：
[1] Laboratory of Physical Chemistry, Department of Chemistry, University of Thessaloniki
来源：
SOLAR ENERGY MATERIALS | 1990年 / 20卷 / 1-2期
关键词：
Electric Measurements - Photovoltaic Cells--Materials - Semiconducting Indium Compounds;
D O I：
10.1016/0165-1633(90)90016-T
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The basic photoelectrochemical behaviour and some physical quantities of the ternary semiconductor n-Zn3In2S6 have been investigated for the first time. From the photocurrent actions spectrum in 1M Na2SO4 a direct optical band gap energy (Eg) equal to 2.81 eV has been determined. From capacity measurements a flat band potential (VFB 0 - 1.29 V SCE) has been calculated, as well as the donor density, the conduction and the valence band edge. With pH increasing, a shift of the photocurrent onset potential (Von) to more cathodic values has been observed. The presence of redox systems such as Na2S/NaOH, Na2SO3, K3[Fe(CN)6]/ K4[Fe(CN)6], Ce3+/Ce4+ improves the stability of the electrodes and produces reasonable photovoltages. © 1990.
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页码：43 / 51
页数：9
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