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Updated: May 12, 2026

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具有接口调度的高性能近红外AgAuSe量子点发光二极管

Zhiwei Ma¹, Ziqiang Sun^1,2, Hongchao Yang¹

¹CAS Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.

Journal of the American Chemical Society

|November 1, 2023

概括

环境无害的近红外量子点发光二极管 (NIR-QLED) 使用AgAuSe量子点和接口工程实现了创纪录的效率. 这一突破使得夜视技术更安全,更高性能.

科学领域:

光电子产品
材料科学
纳米技术

背景情况:

近红外量子点发光二极管 (NIR-QLED) 对于夜视和追踪至关重要.
现有的高性能NIR-QLED通常依赖于含 (Pb) 的材料,这对环境造成了担忧.
与基于Pb的设备相比,对环境无害的替代品在历史上表现不佳.

研究的目的:

开发高性能,对环境无害的NIR-QLED.
研究用于提高 QD 设备性能的接口工程策略.
克服良性和含Pb的NIR-QLED之间的性能差距.

主要方法:

使用银金化物 (AgAuSe) 量子点 (QD) 制造NIR-QLED.
实施胺处理的QD薄膜接触异质接口以消除缺陷.
使用协调添加剂通过双极时刻操纵优化电荷注入平衡.

主要成果:

在1046nm时实现了15.8%的外部量子效率 (EQE) 和12.7%的功率转换效率 (PCE).
显示了0.9V的低子频段开启电压.
在广泛的电流密度范围内观察到持续的高EQE (0.0017到0.31 mA cm-2).

结论:

囊胺治疗有效地减轻了AgAuSe QD膜的接触缺陷.
具有特定添加方位的接口工程优化了充电注入,以获得卓越的设备性能.
这项工作为实用,高性能,对环境无害的NIR-QLED应用提供了可行的策略.

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