Structure and photoelectrochemical properties of semiconducting rhenium cluster chalcogenides: Re6X8Br2 (X ≡ S, Se)

被引：0
|
作者：
Fischer, C. [1 ]
Alonso-Vante, N. [1 ]
Fiechter, S. [1 ]
Tributsch, H. [1 ]
Reck, G. [1 ]
Schulz, W. [1 ]
机构：
[1] Hahn-Meilner-Inst, Berlin, Germany
来源：
Journal of Alloys and Compounds | 1992年 / 178卷 / 1-2期
关键词：
Crystals - Structure - Electrochemistry - Photochemical Reactions - Rhenium Compounds - Electrochemistry;
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摘要：
Single crystals of Re6Se8Br2 and Re6S8Br2 were synthesized by chemical vapour transport reactions. The latter was crystallized. X-ray structure analysis reveals that Re6S8Br2 is isostructural to Re6Se8Br2. Both semiconducting cluster materials were photoelectro-chemically characterized and showed p-type behaviour. From the photocurrent action spectra, their estimated band gaps are 0.84 eV and 1.65 eV for the selenide and sulphide, respectively, with a probably indirect optical transition.
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页码：305 / 314
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