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Octafluoronaphthalene assists in adjusting phase distribution of quasi-two-dimensional perovskite LEDs

文献类型：期刊论文

作者Cheng, Xudong1,2; Chen, Xia1,2; Chen, Xiaoli1; Xu, Xueqing1; Zhu, Yanqing1; Xiao, Xiudi1; Xu, Gang1
刊名OPTICAL MATERIALS
出版日期2023-11-01
卷号145页码:8
关键词Quasi-2D perovskite Octafluoronaphthalene Phase distribution LEDs
ISSN号0925-3467
DOI10.1016/j.optmat.2023.114444
通讯作者Xu, Xueqing(xuxq@ms.giec.ac.cn) ; Zhu, Yanqing(zhuyq@ms.giec.ac.cn)
英文摘要Two-dimensional (2D) lead halide perovskites are famous for their high color purity, tunable bandgap, and solution processability as the one of the most promising candidates for light-emitting diodes (LEDs). The 2D perovskite films often make up multiple phases with layered (n) lead halide (from n = 1, 2, 3 to approximate to infinity). However, phase-segregation, especially forming too much small-n phases may lead to poor energy transfer and morphology. The phase distribution n of quasi-2D perovskite can be controlled by adjusting the competition between A site cations and large organic cations. We use octafluoronaphthalene (OFN) as an additive which has a synergy effect with PEABr to slow down the release of PEABr during the process of forming small-n phases after spin coating. The peak external quantum efficiency (EQE) of 6.45% and the optimum luminance of 27,604 cd/m2 were obtained. Our findings provide a fresh sight of adjusting phase distribution through synergy effect with large organic cations.
WOS关键词LIGHT-EMITTING-DIODES ; INORGANIC PEROVSKITES ; HALIDE PEROVSKITES ; HIGHLY EFFICIENT ; LEAD HALIDE ; SOLAR-CELLS ; ENERGY
资助项目Guangdong Provincial Science and Technology Plan Project[2023A0505010003] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515010345] ; Sci-ence and Technology Planning Project of Guangzhou[202007020004]
WOS研究方向Materials Science ; Optics
语种英语
WOS记录号WOS:001097898800001
出版者ELSEVIER
资助机构Guangdong Provincial Science and Technology Plan Project ; Guangdong Basic and Applied Basic Research Foundation ; Sci-ence and Technology Planning Project of Guangzhou
源URL[http://ir.giec.ac.cn/handle/344007/40114]  
专题中国科学院广州能源研究所
通讯作者Xu, Xueqing; Zhu, Yanqing
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Xudong,Chen, Xia,Chen, Xiaoli,et al. Octafluoronaphthalene assists in adjusting phase distribution of quasi-two-dimensional perovskite LEDs[J]. OPTICAL MATERIALS,2023,145:8.
APA Cheng, Xudong.,Chen, Xia.,Chen, Xiaoli.,Xu, Xueqing.,Zhu, Yanqing.,...&Xu, Gang.(2023).Octafluoronaphthalene assists in adjusting phase distribution of quasi-two-dimensional perovskite LEDs.OPTICAL MATERIALS,145,8.
MLA Cheng, Xudong,et al."Octafluoronaphthalene assists in adjusting phase distribution of quasi-two-dimensional perovskite LEDs".OPTICAL MATERIALS 145(2023):8.

入库方式： OAI收割

来源：广州能源研究所

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