Polycrystalline iron sulphide based semiconductors for solar energy conversion

被引：4

作者：

Antonucci, P

Arico, AS

Giordano, N

Antonucci, V

机构：

[1] UNIV REGGIO CALABRIA,FAC ENGN,INST CHEM,I-89100 REGGIO CALABRIA,ITALY

[2] INST CNR TAE,I-98126 MESSINA,ITALY

来源：

ADVANCED PERFORMANCE MATERIALS | 1995年 / 2卷 / 02期

关键词：

D O I：

10.1007/BF00711268

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Potentialities of iron sulphide semiconductors for solar energy conversion have been outlined. Iron sulphide semiconductors have been characterized with respect to their bulk (XRD, EDAX), surface (XPS) and electronic (W-Vis reflectance spectroscopy) structure. Materials have been formed into electrodes by screen-printing and have been thermally activated under different conditions. Synthetic polycrystalline pyrite activated in air-hydrogen atmosphere showed the highest efficiency for solar energy conversion in polyiodide electrolyte. Distinguishing characteristics of these materials are due to the optimal absorption and charge transfer properties at the electrode-electrolyte interface. From parallel experiments carried out on pyrrhotite and natural pyrite-based semiconductors, it was derived that the latter characteristics are related to favourable substoichiometric surface sites and to the formation of an iron oxide bulk phase in the semiconductors.

引用

页码：145 / 159

页数：15

共 18 条

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