Enhanced Thermoelectric Properties of Cu2Se Flexible Thin Films by Optimizing Growth Temperature and Elemental Composition,ACS Applied Energy Materials

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Enhanced Thermoelectric Properties of Cu2Se Flexible Thin Films by Optimizing Growth Temperature and Elemental Composition
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2022-10-31 , DOI: 10.1021/acsaem.2c02572
Yiliu Li ₁ , Yiming Zhong ₁ , Dongliang Zhang ₁ , Junyu Niu ₁ , Mohammad Nisar ₁ , Meng Wei ₁ , Guangxing Liang ₁ , Ping Fan ₁ , Zhuanghao Zheng ₁

Affiliation

As an emerging semiconductor, environmentally friendly thermoelectric material, Cu₂Se has drawn great attention due to its outstanding thermoelectric performance. In this work, Cu₂Se-based thin films were deposited on a flexible polyimide substrate by magnetron sputtering technique via in-situ growth method. The effect of growth temperature and Cu composition was investigated. The results indicate that the thin films grown at 200 °C have high electrical conductivity due to their high carrier mobility. Further adjusting of Cu composition can achieve highly (0l0)-preferred orientation Cu₂Se-based thin films with optimized carrier concentration, resulting in an increase in Seebeck coefficient and further leading to the enhancement of power factor.

中文翻译：

通过优化生长温度和元素组成增强 Cu2Se 柔性薄膜的热电性能

_{Cu 2} Se作为一种新兴的半导体、环保型热电材料，以其优异的热电性能而备受关注。在这项工作中，Cu ₂ Se基薄膜通过原位生长方法通过磁控溅射技术沉积在柔性聚酰亚胺基板上。研究了生长温度和 Cu 成分的影响。结果表明，在 200 °C 下生长的薄膜由于其高载流子迁移率而具有高导电性。进一步调整Cu成分可实现Cu _2高度(0l 0)择优取向具有优化载流子浓度的硒基薄膜，导致塞贝克系数增加，并进一步导致功率因数的提高。

更新日期：2022-10-31

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