在p-Te/n-CdSe范德瓦尔斯异质连接中强大的层间合,用于具有高速和高响应性的自动供电光探测器
Optics express
|June 29, 2023
概括
研究人员开发了使用和化范德瓦尔斯异质连接 (vdWHs) 的自动驱动光探测器. 这些设备为低功耗电子产品提供高响应性和快速响应.
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:
- 自动驱动的光电探测器对于低功耗电子产品和物联网设备至关重要.
- 现有的范德瓦尔斯异质连接 (vdWH) 光探测器由于光吸收和光增益不佳,往往会产生低响应度.
研究的目的:
- 开发具有增强光吸收和光增益的高性能自动驱动光探测器.
- 调查2D/无层半导体vdWHs在先进光电子应用中的潜力.
主要方法:
- 使用无层CdSe纳米带和 (Te) 制造p-Te/n-CdSe vdWH.
- 描述光探测器的性能,包括响应能力,检测能力,响应速度和光响应频谱.
- 在照明下评估光伏性能.
主要成果:
- 实现了超高的响应能力 (0.94 A W-1) 和检测能力 (8.36 × 1012 斯).
- 证明了快速的响应速度 (24μs),大开/关比 (>105) 和宽带的光响应 (405-1064nm).
- 展现出优越的光伏特性,具有很大的开放电路电压 (Voc = 0.55 V) 和短路电流 (Isc = 2.73 μA).
结论:
- p-Te/n-CdSe vdWH显示出优异的自动供电特性,超过了大多数报道的 vdWH 光探测器.
- 在2D/无层半导体VDWH中,强大的层间合是高性能,低功耗光电子设备的可行策略.
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