增强SnS/SnS2分层异构结构的光学响应
Der-Yuh Lin1, Hung-Pin Hsu2, Kuang-Hsin Liu1
1Department of Electronic Engineering, National Changhua University of Education, No. 2, Shi-Da Rd., Changhua 500, Taiwan.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
新的硫化/硫化异构增强了光检测性能. 这种分层材料显示光响应率增加了7倍,并改善了用于先进光探测器应用的光学响应速度.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 光电学是指光电子产品.
背景情况:
- 硫化 (SnS) 和二硫化 (SnS2) 是具有光电子应用潜力的分层材料.
- 开发高效的异构结构对于提高光检测能力至关重要.
- 了解载体动态和重组机制是优化设备性能的关键.
研究的目的:
- 为了制造和描述一个SnS/SnS2异构结构.
- 为了研究载体运动衰变过程和异构结构的光响应性.
- 评估SnS/SnS2异构在高性能光检测方面的潜力.
主要方法:
- 化学蒸汽沉积 (CVD) 用于制造SnS/SnS2异构.
- 用X射线衍射 (XRD),拉曼光谱和场辐射扫描电子显微镜 (FESEM) 进行结构特征.
- 频率依赖光导和功率依赖光响应的测量.
主要成果:
- SnS/SnS2异构表现出一个短时间恒定的衰变过程,比率为0.729,时间恒定为4.3×10^-4秒.
- 光敏度达到7.31 × 10^-3 A/W,与单个SnS或SnS2膜相比增强了7倍.
- 通过使用异构结构,光学响应速度得到了显著提高.
结论:
- 制造的SnS/SnS2异构结构显示出卓越的光检测性能.
- 增强的性能归因于改善的载体动力学和异构结构内的重组机制.
- 这种分层的异构结构为设计下一代高性能光电探测器提供了一个有前途的方法.
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