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Highly efficient quasi-two dimensional perovskite light-emitting diodes by phase tuning
Organic Electronics ( IF 3.2 ) Pub Date : 2021-07-15 , DOI: 10.1016/j.orgel.2021.106295
Qiang Xu 1 , Run Wang 1 , Ya-Lan Jia 1 , Xiao-Li He 1 , Yan-Hong Deng 2 , Fu-Xing Yu 1 , Yue Zhang 1 , Xing-Juan Ma 1 , Ping Chen 1 , Yong Zhang 1 , Zu-Hong Xiong 1 , Chun-Hong Gao 1, 2
Affiliation  

Tetraphenylphosphonium chloride (TPPCl) is used as an additive in the antisolvent for preparing the quasi-two Dimensional (quasi-2D) perovskite film. This strategy is not only beneficial for the morphology formation but also the phase tuning of the quasi-2D perovskite film. Highly efficient and stable perovskite light-emitting diodes (PeLEDs) were achieved with the maximum luminance of 35,000 cd/m2, the maximum current efficiency of 48.0 cd/A and the maximum external quantum efficiency (EQE) of 12.42%. Due to the reduced exciton quenching rate, improved charge carrier injection and transport ability, the electroluminescent performance of the TPPCl-based PeLEDs has been enhanced.



中文翻译:

通过相位调谐的高效准二维钙钛矿发光二极管

四苯基氯化磷 (TPPCl) 用作抗溶剂中的添加剂,用于制备准二维 (quasi-2D) 钙钛矿薄膜。这种策略不仅有利于形貌形成,而且有利于准二维钙钛矿薄膜的相位调整。实现了高效稳定的钙钛矿发光二极管 (PeLED),最大亮度为 35,000 cd/m 2,最大电流效率为 48.0 cd/A,最大外量子效率 (EQE) 为 12.42%。由于激子猝灭率降低,电荷载流子注入和传输能力提高,TPPCl 基 PeLED 的电致发光性能得到增强。

更新日期:2021-07-24
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