Alternative Type Two-Dimensional-Three-Dimensional Lead Halide Perovskite with Inorganic Sodium Ions as a Spacer for High-Performance Light-Emitting Diodes

doi:10.1021/acsnano.8b07632

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

	Alternative Type Two-Dimensional-Three-Dimensional Lead Halide Perovskite with Inorganic Sodium Ions as a Spacer for High-Performance Light-Emitting Diodes
	Wu, C ; Wu, T ; Yan, YG ; McLeod, JA ; Wang, YS ; Zou, YT ; Zhai, TS ; Li, JN ; Ban, MY ; Song, T
刊名	ACS NANO
	2019
卷号	13 期号:2 页码:1645—1654
关键词	OPTICAL-PROPERTIES EFFICIENT ENERGY CSPBX3 BR
ISSN号	1936-0851
DOI	10.1021/acsnano.8b07632
文献子类	期刊论文
英文摘要	Two-dimensional (2D) lead halide perovskites with long-chain ammonium halides display high photoluminescence quantum yields (PLQYs), because of their size and dielectric confinement, which hold promise for a high-efficiency and low-cost light-emitting diode (LED). However, the presence of an insulating organic long-chain spacer cation (L) dramatically deteriorates the charge transport properties along the out-of-plane nanoplatelet direction or adjacent nanocrystals, which would limit the device performance of the LED. To overcome this issue, we successfully incorporate small alkaline ions such as sodium (Na+) to replace the long organic molecule. Grazing incidence X-ray diffraction measurements verify 2D layer formation with a preferred crystallite orientation. In addition, the incorporated sodium salt also generates amorphous sodium lead bromide (NaPbBr3) in perovskite as spacers to form a nanocrystal-like halide perovskite film. The PLQY is dramatically improved in the sodium-incorporated film because of its enhanced photoluminescence lifetime. Upon incorporation of a low concentration organic additive, this two-dimensional-three-dimensional (2D-3D) perovskite can achieve a compact and uniform film. Therefore, a 2D-3D perovskite achieves a high external quantum efficiency of 15.9% with good operational stability. We develop a type of 2D-3D halide perovskite with various inorganic ions as spacers for promising high-performance optoelectronic devices.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31463]
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.Univ Cambridge, Dept Phys, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England 2.Soochow Univ, Joint Int Res Lab Carbon Based Funct Mat & Device, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, 199 Renai Rd, Suzhou 215123, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil SSRF, 239 Zhangheng Rd, Shanghai 201204, Peoples R China;
推荐引用方式 GB/T 7714	Wu, C,Wu, T,Yan, YG,et al. Alternative Type Two-Dimensional-Three-Dimensional Lead Halide Perovskite with Inorganic Sodium Ions as a Spacer for High-Performance Light-Emitting Diodes[J]. ACS NANO,2019,13(2):1645—1654.
APA	Wu, C.,Wu, T.,Yan, YG.,McLeod, JA.,Wang, YS.,...&Sun, BQ.(2019).Alternative Type Two-Dimensional-Three-Dimensional Lead Halide Perovskite with Inorganic Sodium Ions as a Spacer for High-Performance Light-Emitting Diodes.ACS NANO,13(2),1645—1654.
MLA	Wu, C,et al."Alternative Type Two-Dimensional-Three-Dimensional Lead Halide Perovskite with Inorganic Sodium Ions as a Spacer for High-Performance Light-Emitting Diodes".ACS NANO 13.2(2019):1645—1654.