The Effect of Low-temperature Annealing on the Structure and Chemical Composition of Cu2 ZnSnS4 Films Deposited on Flexible Polyimide Substrates

2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2020-11-09 DOI:10.1109/NAP51477.2020.9309580

R. Pshenychnyi, S. Kakherskyi, O. Dobrozhan, D. Kurbatov, A. Opanasyuk

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Abstract

This work presents the results of a comprehensive study of the structural characteristics and chemical composition of $\mathrm{c}_{\mathrm{u}2}$znSnS4 (CZTS) nanocrystals and thin films. Appropriate layers were deposited onto the flexible polyimide substrates by spraying a suspension of nanocrystals followed by low-temperature annealing at $200^{\circ}\mathrm{C}$ for (10-120) min in Ar atm. The study of the samples by XRD and Raman spectroscopy showed that nanocrystals and CZTS thin films contain the kesterite phase with small impurities of CuxSnySz. Established that the chemical composition of the obtained films corresponds to the composition of the nanocrystals used for its application in solar cell development. Increasing the growth time of nanocrystals and annealing time of films causes an improvement in the crystalline quality of the main phase of the samples - kesterite. Showed that the CZTS thin films obtained by the presented method can be used as absorbers in third-generation solar cells.

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低温退火对柔性聚酰亚胺基板上Cu2 ZnSnS4薄膜结构和化学成分的影响

本文介绍了$\ mathm {c}_{\ mathm {u}2}$znSnS4 (CZTS)纳米晶体和薄膜的结构特征和化学成分的综合研究结果。将纳米晶体悬浮液喷涂到柔性聚酰亚胺衬底上，然后在氩气中以200^{\circ}\ mathm {C}$低温退火(10-120)min。XRD和拉曼光谱分析表明，纳米晶和CZTS薄膜中含有少量CuxSnySz杂质的kesterite相。确定所得薄膜的化学成分与用于太阳能电池开发的纳米晶体的化学成分相对应。延长纳米晶的生长时间和薄膜的退火时间，可使样品的主相kesterite的结晶质量得到改善。结果表明，该方法制备的CZTS薄膜可作为第三代太阳能电池的吸收剂。

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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2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)

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