气候变化领域集成服务门户(CCPortal): A Cocktail of Multiple Cations in Inorganic Halide Perovskite toward Efficient and Highly Stable Blue Light-Emitting Diodes

CCPortal

DOI	10.1021/acsenergylett.9b02562
	A Cocktail of Multiple Cations in Inorganic Halide Perovskite toward Efficient and Highly Stable Blue Light-Emitting Diodes
	Yuan F.; Ran C.; Zhang L.; Dong H.; Jiao B.; Hou X.; Li J.; Wu Z.
发表日期	2020
ISSN	23808195
起始页码	1062
结束页码	1069
卷号	5 期号:4
英文摘要	Blue-emitting materials and their light-emitting diodes (LEDs) are always challenging in lighting and display applications. Recently, perovskite LEDs (PeLEDs) with efficient and stable green/red emission have made great progress, where external quantum efficiency (EQE) over 20% has been reached. However, it is still a big challenge to realize stable blue PeLEDs with high efficiency mainly because of the poor film quality and unreasonable device structure. Herein, a cocktail strategy, that is, multication (Cs/Rb/FA/PEA/K)Pb(Cl/Br)3, is demonstrated to improve both the efficiency and stability of blue PeLEDs. Combined with the "insulator-perovskite-insulator" structure, PeLEDs based on a multication (Cs/Rb/FA/PEA/K)Pb(Cl/Br)3 perovskite film show maximum EQE of 2.01% and maximum luminance of 4015 cd/m2 at 484 nm. More importantly, the device exhibits robust durability, and its half-lifetime is over 300 min under continuous operation. The multication strategy could open up a new avenue for the design of new blue-emitting materials for high-performing PeLEDs. © 2020 American Chemical Society.
scopus关键词	Efficiency; Perovskite; Rubidium; Blue emitting material; Blue light emitting diodes; Continuous operation; Display application; External quantum efficiency; Inorganic halides; Maximum luminance; Multiple cations; Light emitting diodes
来源期刊	ACS Energy Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176933
作者单位	Key Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Info. Photonic Tech., Sch. of Electron. and Info. Eng., xi'An Jiaotong Univ., Xi'an Shaanxi, 710049, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China; Department of Applied Physics, Aalto University, Aalto, FI-00076, Finland; Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, School of Electronic Science and Engineering, xi'An Jiaotong University, Xi'an Shaanxi, 710049, China
推荐引用方式 GB/T 7714	Yuan F.,Ran C.,Zhang L.,et al. A Cocktail of Multiple Cations in Inorganic Halide Perovskite toward Efficient and Highly Stable Blue Light-Emitting Diodes[J],2020,5(4).
APA	Yuan F..,Ran C..,Zhang L..,Dong H..,Jiao B..,...&Wu Z..(2020).A Cocktail of Multiple Cations in Inorganic Halide Perovskite toward Efficient and Highly Stable Blue Light-Emitting Diodes.ACS Energy Letters,5(4).
MLA	Yuan F.,et al."A Cocktail of Multiple Cations in Inorganic Halide Perovskite toward Efficient and Highly Stable Blue Light-Emitting Diodes".ACS Energy Letters 5.4(2020).