Properties of Mechanochemically Synthesized Famatinite Cu3SbS4 Nanocrystals

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Micro & Nano Letters Pub Date : 2023-04-13 DOI:10.3390/micro3020030

E. Dutková, J. Kováč, J. Kováč, J. Hejtmánek, P. Levinský, A. Kashimbetova, M. Sayagués, M. Fabián, Z. Lukáčová Bujňáková, M. Baláž, Katarína Gáborová, V. Puchý, L. Čelko

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引用次数: 0

Abstract

In this study, we report the optoelectric and thermoelectric properties of famatinite Cu3SbS4 that was mechanochemically synthesized in a planetary mill from powder elements for 120 min in an inert atmosphere. The tetragonal famatinite Cu3SbS4 was nanocrystalline with a crystallite size of 14 nm, as endorsed by Rietveld refinement. High-resolution transmission electron microscopy showed several crystallites in the range of 20–50 nm. Raman spectroscopy proved the purity of the synthesized famatinite Cu3SbS4 and chemical-state characterization performed by X-ray photoelectron spectroscopy confirmed that the prepared sample was pure. The Cu1+, Sb5+, and S2− oxidation states in Cu3SbS4 sample were approved. The morphology characterization showed homogeneity of the prepared sample. The photoresponse of Cu3SbS4 was confirmed from I–V measurements in the dark and under illumination. The photocurrent increase reached 20% compared to the current in the dark at a voltage of 5 V. The achieved results confirm that synthesized famatinite Cu3SbS4 can be applied as a suitable absorbent material in solar cells. The performed thermoelectric measurements revealed a figure of merit ZT of 0.05 at 600 K.

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机械化学合成法马褐铁矿Cu3SbS4纳米晶的性质

在本研究中，我们报道了由粉末元素在惰性气氛中机械化学合成120 min的褐铁矿Cu3SbS4的光电和热电性质。方形黄铁矿Cu3SbS4为纳米晶，晶粒尺寸为14 nm，经Rietveld细化。高分辨率透射电子显微镜显示在20-50 nm范围内有几个晶体。拉曼光谱证实了所合成的黄铁矿Cu3SbS4的纯度，x射线光电子能谱的化学态表征证实了所制备样品的纯度。Cu3SbS4样品的Cu1+、Sb5+和S2−氧化态得到了证实。形貌表征表明制备的样品具有均匀性。Cu3SbS4在黑暗和光照条件下的光响应通过I-V测量得到了证实。在5v电压下，光电流比黑暗中的电流增加了20%。结果表明，合成的黄褐铁矿Cu3SbS4可以作为一种合适的吸收材料应用于太阳能电池中。所进行的热电测量显示，在600 K时，性能值ZT为0.05。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Micro & Nano Letters 工程技术-材料科学：综合

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

2.8 months

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