在Te/WSe2中的电调多效应协同效应和增强光电性能混合维度异构连接光电晶体管中
Hechun Cao1,2, Tao Hu1,2, Jiyue Zhang1
1Key Laboratory of Polar Materials and Devices (MOE) and Department of Electronics, East China Normal University, Shanghai, 200241, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 19, 2024
概括
研究人员开发了可调节的Te/WSe2混合维度异构连接 (MDHJ) 光传感器. 这些设备具有增强的灵敏度,并作为人工生物视觉系统发挥作用,为智能光电子传感器铺平了道路.
科学领域:
- 光电学是指光电子产品.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 混合维度异构连接 (MDHJ) 对先进的光电子传感器至关重要.
- 在MDHJ中实现增强敏感性的协同效应仍然是一个挑战.
- 人工生物系统需要敏感和多功能光探测器.
研究的目的:
- 为了构建电调 Te/WSe2 MDHJs 光传感器.
- 研究光导,光伏和光热电转换的协同效应.
- 为了证明这些MDHJs对人工生物视觉系统的潜力.
主要方法:
- Te/WSe2异构结构的制造.
- 门和偏差的电气调节.
- 光探测器性能的表征,包括暗电流,开/关比,响应和检测能力.
- 对生物系统应用的响应时间的评估.
主要成果:
- 实现了超低的暗电流 (<0.1 pA) 和高的开/关纠正比率 (10^6).
- 证明了同时进行光导,光伏和光热电转换.
- 获得了高响应度 (13.9 A/W) 和探测能力 (1.37 × 10^12 斯) 的400倍增长.
- 显示的响应时间与人类视觉系统相比,具有暂时的正负信号.
结论:
- 可电调 Te/WSe2 MDHJ 为高性能光检测器提供了一个有前途的平台.
- 多种转换机制的协同作用显著提高了设备的灵敏度.
- 这些MDHJ显示出开发智能光电子设备和人工生物视觉系统的潜力.
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