气候变化领域集成服务门户(CCPortal): 2D Ruddlesden–Popper Perovskite Nanoplate Based Deep-Blue Light-Emitting Diodes for Light Communication

CCPortal

DOI	10.1002/adfm.201903861
	2D Ruddlesden–Popper Perovskite Nanoplate Based Deep-Blue Light-Emitting Diodes for Light Communication
	Deng W.; Jin X.; Lv Y.; Zhang X.; Zhang X.; Jie J.
发表日期	2019
ISSN	1616301X
卷号	29 期号:40
英文摘要	Ruddlesden–Popper perovskite, (PEA)2PbBr4 (PEA = C8H9NH3), is a steady and inexpensive material with a broad bandgap and a narrow-band emission. These features make it a potential candidate for deep-blue light-emitting diodes (LEDs). However, due to the weak exciton binding energy, LEDs based on the perovskite thin films usually possess a very low external quantum efficiency (EQE) of <0.03%. Here, for the first time, the construction of high-performance deep-blue LEDs based on 2D (PEA)2PbBr4 nanoplates (NPs) is demonstrated. The as-fabricated (PEA)2PbBr4 NPs film shows a deep-blue emission at 410 nm with excellent stability under ambient conditions. Impressively, LEDs based on the (PEA)2PbBr4 NPs film deliver a bright deep-blue emission with a maximum luminance of 147.6 cd m−2 and a high EQE up to 0.31%, which represents the most efficient and brightest perovskite LEDs operating at deep-blue wavelengths. Furthermore, the LEDs retain over 80% of their efficiencies for over 1350 min under ≈60% relative humidity. The steady and bright deep-blue LEDs can be used as an excitation light source to realize white light emission, which shows the potential for light communication. The work provides scope for developing perovskite into efficient and deep-blue LEDs for low-cost light source and light communication. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
英文关键词	deep-blue emission; perovskite light communication; perovskite light-emitting diodes; perovskite nanocrystals; Ruddlesden–Popper perovskite
scopus关键词	Binding energy; Diodes; Nanostructures; Perovskite; Perovskite solar cells; Semiconductor quantum wells; Supercomputers; Thin films; Deep-blue emissions; Excitation light sources; Exciton-binding energy; External quantum efficiency; Narrow-band emission; Perovskite thin films; Ruddlesden; White light emission; Light emitting diodes
来源期刊	Advanced Functional Materials
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176331
作者单位	Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China
推荐引用方式 GB/T 7714	Deng W.,Jin X.,Lv Y.,等. 2D Ruddlesden–Popper Perovskite Nanoplate Based Deep-Blue Light-Emitting Diodes for Light Communication[J],2019,29(40).
APA	Deng W.,Jin X.,Lv Y.,Zhang X.,Zhang X.,&Jie J..(2019).2D Ruddlesden–Popper Perovskite Nanoplate Based Deep-Blue Light-Emitting Diodes for Light Communication.Advanced Functional Materials,29(40).
MLA	Deng W.,et al."2D Ruddlesden–Popper Perovskite Nanoplate Based Deep-Blue Light-Emitting Diodes for Light Communication".Advanced Functional Materials 29.40(2019).