低噪音电调制双模式光探测器,具有矿/有机双吸收层
Jixuan Zhou1,2, Yun Lin1, Fang Wan1,2
1Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha, Hunan 410083, P. R. China.
ACS nano
|November 20, 2025
概括
我们开发了一种使用矿/有机层的双模式光探测器. 该设备为加密通信等先进应用提供可调节的光谱检测,实现高检测性和动态范围.
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
背景情况:
- 具有可调节光谱范围的光电探测器对于诸如多光谱成像和安全通信等应用至关重要.
- 现有技术在光谱可调性和性能方面面临限制.
研究的目的:
- 为了展示一种具有可电调节的光谱响应的新型双模光探测器.
- 为了利用矿和有机半导体的不同电场灵敏度进行双频段检测.
主要方法:
- 一个垂直堆叠的矿/有机双吸收层 (FA0.9Cs0.1PbI2.85Br0.15/PM6:BTP-eC9) 的制造.
- 利用接口工程来减少暗电流并提高设备性能.
- 光探测器性能的表征,包括光谱响应,暗电流,检测能力和动态范围.
主要成果:
- 通过外部偏差实现了双模式光探测器在矿和有机吸收带之间切换.
- 通过界面工程,通过2-3个数量级减少暗电流.
- 在两种模式中都获得了高特异检测度 (>1011 斯) 和大线性动态范围 (>190 dB).
- 证明了最低可检测光强度为7.0 pW cm-2 .
- 成功地将探测器应用于用于信息加密的双通道光通信系统.
结论:
- 矿/有机双吸收层为开发电调制双模式光探测器提供了一个多功能平台.
- 这种方法可以为先进的光电子应用提供可调节的光谱响应范围.
- 展示的设备在检测能力和动态范围等性能指标上提供了显著的改进.
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