用时间分辨的微波导电性探测蒸发的木基甲化物薄膜的电荷载体动力学
Fang Yao1,2, Ruiming Li1,2, Zhenglin Jia1,2
1Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China.
The journal of physical chemistry letters
|June 8, 2023
概括
用硫对甲基化物薄膜进行后处理,通过使陷状态无源化,可以提高载电荷的移动性和寿命. 这通过提高辐射重组效率来提高光电子设备的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 半导体物理 半导体物理
背景情况:
- 炭化物半导体由于其低毒性和稳定性,对光电子有希望.
- 对电荷重组和陷状态的有限理解阻碍了发展.
研究的目的:
- 调查后处理对基于比斯木的石灰化物薄膜的影响.
- 了解电荷重组机制和陷状态被动化.
主要方法:
- 时间分辨率的微波导电性测量.
- 温度依赖的光发光谱学.
- 在Bi2S3薄膜上对 (Bi) 和硫 (S) 后处理的分析.
主要成果:
- 经过后处理,BI增强了结晶性和载体流动性,但增加了载体密度.
- 硫后处理被动化了谷物边界陷状态,增加了载体寿命和移动性.
- 硫处理导致辐射重组效率提高.
结论:
- 硫后处理有效地改善了Bi2S3薄膜的载体动力学和光电子特性.
- 化陷状态对于优化化半导体性能至关重要.
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