Scholarlink

<p>SnSe is a promising thermoelectric material with excellent performance, but its practical use is limited by poor mechanical properties and challenges in mass production. Improving polycrystalline SnSe has been the focus, with grain boundary engineering via atomic layer deposition (ALD) emerging as an effective approach. ALD introduces interfacial layers that reduce thermal conductivity through phonon scattering and enhance the Seebeck coefficient via energy-filtering effects. In this study, ZnO thin films were uniformly deposited on SnSe powders using ALD, and their microstructure and chemical properties were analyzed. Thermoelectric evaluations showed a 45% improvement in the figure of merit for ZnO-coated SnSe pellets. Transmission electron microscopy revealed that the thickness and crystallinity of the ZnO film play a critical role in enhancing thermoelectric performance, highlighting the importance of interfacial engineering for optimizing SnSe-based thermoelectric materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Thermal Confinement and Filtering Effect of SnSe by Insertion of Atomic-Layer-Deposited ZnO Interfacial Layer

  • 期刊论文

  • 发表日期：

    2025年8月8日

查看全文
  • Myeong Jun Jung,
  • Su Min Eun,
  • Hogyoung Kim,
  • Seong Keun Kim,
  • Jongmin Byun,
  • Byung Joon Choi

摘要

SnSe is a promising thermoelectric material with excellent performance, but its practical use is limited by poor mechanical properties and challenges in mass production. Improving polycrystalline SnSe has been the focus, with grain boundary engineering via atomic layer deposition (ALD) emerging as an effective approach. ALD introduces interfacial layers that reduce thermal conductivity through phonon scattering and enhance the Seebeck coefficient via energy-filtering effects. In this study, ZnO thin films were uniformly deposited on SnSe powders using ALD, and their microstructure and chemical properties were analyzed. Thermoelectric evaluations showed a 45% improvement in the figure of merit for ZnO-coated SnSe pellets. Transmission electron microscopy revealed that the thickness and crystallinity of the ZnO film play a critical role in enhancing thermoelectric performance, highlighting the importance of interfacial engineering for optimizing SnSe-based thermoelectric materials.