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交替BiI₃-BiI范德瓦尔斯光探测器,具有低暗电流和高性能光探测

Haoran Mu¹, Renzhong Zhuang², Nan Cui¹

¹Songshan Lake Materials Laboratory, Dongguan 523808, P. R. China.

|October 20, 2023

概括

研究人员开发了用于先进光探测器的新型交替范德瓦尔斯 (vdW) 异构结构. 这些二维材料提供了卓越的性能,包括减少暗电流和广泛的光谱响应,为下一代光电子铺平了道路.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
纳米技术纳米技术

背景情况:

二维 (2D) 范德瓦尔斯 (vdW) 材料和异构结构对光电子有希望,克服了格子匹配的局限性.
现有的光电探测器通常使用简单的异构结构,而复杂的,高阶的光电探测器很难制造.
复杂的异构结构的直接脱皮仍然是设备开发中的一个重大障碍.

研究的目的:

开发一种用于制造高阶2D vdW异构结构的新方法.
研究基于这些新型异构结构的光探测器的性能.
探索这些材料在先进的光电子应用中的潜力.

主要方法:

从溶液中生长的二进制异质晶体中直接剥离BiI3-BiI异构纳米板.
使用合成的异构结构纳米片制造光探测器.
光探测器性能的表征,包括暗电流,检测能力和响应时间.

主要成果:

实现了非常低的暗电流 (<9.2 × 10^-14 A 在5V) 和高检测能力 (8.8 × 10^12 斯在638nm).
展示了3.82μs的快速响应时间,超过了现有的基于二维材料的光学探测器.
在可见,NIR-I和NIR-II区域显示的宽带光响应.

结论:

交替的vdW异构结构为光探测器性能提供了显著的优势.
开发的制造方法使高质量,复杂的异构结构成为可能.
这些材料显示出低功耗,快速响应和灵活的光电子设备的潜力.

关键词:

二维异构结构的二维异构结构.这是一个二维超级网格.比斯穆特化的含量是多少黑暗的电流黑暗的电流黑暗的电流检测能力检测能力一个光电探测器.

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