不同类型的Te/PdSe2 范德瓦尔斯异质连接用于自动供电的宽带和极化敏感光检测
Pu Wang1,2, Zhao Li3, Xue Xia2
1Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems, School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, 519082, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 9, 2024
概括
工程Te/PdSe2异构结构显著提高宽带光探测器的偏振灵敏度. 这一进步是下一代传感,成像和通信技术的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 纳米技术纳米技术
背景情况:
- 对极化敏感的检测对于先进的技术至关重要.
- 像Te和PdSe2这样的狭窄带隙二维材料提供了潜力,但由于结构异构,其极化性能有限.
研究的目的:
- 为了提高宽带光探测器的线性偏振灵敏度.
- 使用定制的2D材料异构结构开发具有更好的性能的自动供电光探测器.
主要方法:
- 一个Te/PdSe2范德瓦尔斯异质连接的制造,其方向经过细致的定制.
- 利用极化拉曼光学光谱和张量计算来优化材料方向.
- 描述了光检测器在广泛光谱范围内的性能.
主要成果:
- 取得了显著的异构性比:1.48 (405nm),3.56 (1550nm) 和1.62 (4μm).
- 证明了高响应性 (617mA/W在1550nm) 和特定检测能力 (5.27 × 10^10斯).
- 呈现出快速响应时间 (≈4.5μs) 和扩展的光谱范围超过4μm.
结论:
- 定向工程异构结构对于增强极化敏感光探测器至关重要.
- 开发的Te/PdSe2光电探测器在极化性能方面超过了以前的设备.
- 这项工作推进了用于传感,成像和通信的光电子技术.
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