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在合成中,Se稳定使HgTe体量子点的缺陷和兴奋剂工程成为可能
Mengxuan Yu1, Ji Yang2, Xingchen Zhang1
1School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|March 19, 2024
概括
一个新的Se稳定策略改进了用于红外光检测的 Telluride (HgTe) 体量子点 (CQD). 这提高了设备的稳定性和性能,为先进的光电子应用铺平了道路.
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:
- 电化物 (HgTe) 体量子点 (CQD) 为光电探测器提供可调的红外吸收和兼容性.
- 提高HgTe CQDs的化学稳定性对于高性能设备至关重要.
研究的目的:
- 为HgTe CQDs制定一个Se稳定策略.
- 提高HgTe CQDs的合稳定性,被动化和兴奋剂可调性.
- 为了提高基于HgTe CQD的红外光探测器的性能和稳定性.
主要方法:
- 设计了前体反应性,以在HgTe CQD上实现Se的表面涂层.
- 制造优化的p-i-n HgTe CQD红外光检测器.红外光检测器.
- 评估光电探测器性能,包括暗电流和特定检测能力.
主要成果:
- 通过Se涂层提高了HgTe CQDs的合体稳定性和被动化.
- 优化的光检测器表现出超低暗电流 (3.26 × 10−6 A cm−2) 和高特异检测能力 (5.17 × 1011 斯在≈2 um).
- 在薄膜中保持了Se稳定效应,显著提高了设备的稳定性.
结论:
- 在合成中的Se稳定策略是有效提高HgTe CQD化学稳定性的.
- 这种方法可以构建高性能,稳定的CQD光探测器.
- 该战略对其他基于CQD的光电子设备有潜在的影响.
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