Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring

doi:10.1038/s41467-018-06425-5

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring
	Ban, MY ; Zou, YT ; Rivett, JPH ; Yang, YG ; Thomas, TH ; Tan, YS ; Song, T ; Gao, XY ; Credington, D ; Deschler, F
刊名	NATURE COMMUNICATIONS
	2018
卷号	9 期号:-页码:-
关键词	CESIUM LEAD HALIDE CROWN-ETHERS NANOCRYSTALS COMPLEXES
ISSN号	2041-1723
DOI	10.1038/s41467-018-06425-5
文献子类	期刊论文
英文摘要	Organometal halide perovskites (OHP) are promising materials for low-cost, high-efficiency light-emitting diodes. In films with a distribution of two-dimensional OHP nanosheets and small three-dimensional nanocrystals, an energy funnel can be realized that concentrates the excitations in highly efficient radiative recombination centers. However, this energy funnel is likely to contain inefficient pathways as the size distribution of nanocrystals, the phase separation between the OHP and the organic phase. Here, we demonstrate that the OHP crystallite distribution and phase separation can be precisely controlled by adding a molecule that suppresses crystallization of the organic phase. We use these improved material properties to achieve OHP light-emitting diodes with an external quantum efficiency of 15.5%. Our results demonstrate that through the addition of judiciously selected molecular additives, sufficient carrier confinement with first-order recombination characteristics, and efficient suppression of non-radiative recombination can be achieved while retaining efficient charge transport characteristics.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31115]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, 239 Zhangheng Rd, Shanghai 201204, Peoples R China 2.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Joint Int Res Lab Carbon Based Funct Mat & Device, 199 Renai Rd, Suzhou 215123, Peoples R China 3.Univ Cambridge, Cavendish Lab, Dept Phys, JJ Thomson Ave, Cambridge CB3 0HE, England
推荐引用方式 GB/T 7714	Ban, MY,Zou, YT,Rivett, JPH,et al. Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring[J]. NATURE COMMUNICATIONS,2018,9(-):-.
APA	Ban, MY.,Zou, YT.,Rivett, JPH.,Yang, YG.,Thomas, TH.,...&Sun, BQ.(2018).Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring.NATURE COMMUNICATIONS,9(-),-.
MLA	Ban, MY,et al."Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring".NATURE COMMUNICATIONS 9.-(2018):-.