有针对性的消除四价值Sn引起的缺陷,以提高无NIR-II矿LED的效率和稳定性
Xiang Guan1,2, Yuqing Li2, Yuanyuan Meng2
1Institute for Electric Light Sources, Shanghai Engineering Research Center for Artificial Intelligence and Integrated Energy System, School of Information Science and Technology, Fudan University, Shanghai, China.
Nature communications
|November 15, 2024
概括
环保基矿对近红外LED具有前景. 一种新的湿度处理方法可以防止锡氧化,提高设备的稳定性和性能,以有效发光.
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.
- 固态化学 固态化学
背景情况:
- 基于锡的矿为光电子应用提供了环保的替代品.
- 由于氧化到Sn4+而导致Sn2+的不稳定性是对设备性能的一个主要挑战.
研究的目的:
- 开发一种方法来消除基矿中Sn4+诱导的缺陷.
- 为了提高近红外发光二极管的效率和稳定性.
主要方法:
- 使用水分触发的四化物水解来形成Sn(OH) 4.4.
- 将处理方法应用于CsSnI3膜,以保护Sn2+.
主要成果:
- 成功制造出近红外发光二极管,在945nm发光.
- 实现了7.6%的外部量子效率和82.6小时的运行寿命.
- 证明了对Sn4+诱导的缺陷的持续保护.
结论:
- 潮湿触发的水解方法有效消除了有害的Sn4+诱导的缺陷.
- 这一策略显著提高了锡基矿近红外LED的性能和稳定性.
- 为高性能,环保的光电子设备铺平了道路.
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