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陶托米混合物协调使无LED成为可能

Dongyuan Han¹, Jie Wang¹, Lorenzo Agosta²

¹College of Physics, Jilin University, Changchun, China.

|August 9, 2023

概括

研究人员开发了一种无锡矿材料用于发光二极管. 这种新材料稳定了锡矿,显著减少了非辐射重组,并提高了与基装置相比的性能.

科学领域:

材料科学
光电子产品
固态化学

背景情况:

在发光二极管 (PeLED) 中,合物矿具有出色的光电子性能.
由于对有毒性的担忧,需要开发无替代品.
在无PeLED中实现高外部量子效率仍然是一个重大挑战.

研究的目的:

用于稳定无锡矿,用于高性能PeLED.
在不影响设备效率的情况下解决除的挑战.
探索用于提高基矿性能的新策略.

主要方法:

采用酸稳定TEA2SnI4 (2-乙烯) 的复合混合协调策略.
加入酸诱导了电子定位和对锡原子的放大电子效应.
在矿表面观察到体二聚体和三聚体超结构的形成.

主要成果:

该策略显著减少了两个数量级的非辐射重组.
激活剂的结合能量增加了大约两倍.
开发的无锡矿PeLED的外部量子效率高达20.29%.

结论:

这些发现为通过控制协调和电子定位稳定矿提供了洞察力.
开发的材料表现出与最先进的含PeLED相匹配的性能.
这项工作有助于开发更安全,高性能的无矿应用.

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