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Si-HgTe 量子点可见红外光探测器

Lei Qian¹, Xue Zhao^1,2, Kenan Zhang³

¹School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.

Nanomaterials (Basel, Switzerland)

|February 25, 2025

概括

这项研究介绍了一种新型的堆叠光探测器,它结合了和 telluride 的合体量子点. 这种设备可以在室温下从可见光到短波红外光的检测范围扩大.

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.
半导体物理半导体物理

背景情况:

光探测器具有成本效益,但由于它们的频段间隙,它们仅限于可见和近红外波长.
扩大检测范围对于先进的光学传感应用至关重要.

研究的目的:

通过将的光谱响应扩展到短波红外 (SWIR) 范围来开发一个宽带光电探测器.
将 Telluride colloidal quantum dots (CQD) 与光二极管进行集成,以提高光谱覆盖率.

主要方法:

一个堆叠的光电探测器的制造,包括HgTe CQD光电二极管和PIN光电二极管.
设备的光谱响应,光电流,响应速度和室温检测能力的表征.
使用自制跨阻抗放大器 (TIA) 电路演示设备应用.

主要成果:

堆叠的探测器在室温下表现出从430nm到2800nm (可见于SWIR) 的广泛光谱响应.
在零偏差下实现的光电流为112.5μA (灯) 和1.24μA (黑体).
证明了1.65μs的快速响应速度,具有高的检测能力:D* = 1.01 × 10¹¹斯 (可见) 和D* = 2.66 × 10¹⁰斯 (SWIR).

结论:

堆叠的HgTe CQD/Si光探测器成功地将检测能力扩展到SWIR范围.
该设备提供了出色的性能指标,包括广泛的光谱覆盖,高光电流,快速响应和高检测能力.
展示的TIA电路集成突出了这种宽带光电探测器在各种传感任务中的实际适用性.

关键词:

HgTe 是一个合体量子点.跨阻抗放大器电路的电路.可见红外光探测器可见红外光探测器

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