Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes

Science
Himchan ChoTae-Woo Lee

Abstract

Organic-inorganic hybrid perovskites are emerging low-cost emitters with very high color purity, but their low luminescent efficiency is a critical drawback. We boosted the current efficiency (CE) of perovskite light-emitting diodes with a simple bilayer structure to 42.9 candela per ampere, similar to the CE of phosphorescent organic light-emitting diodes, with two modifications: We prevented the formation of metallic lead (Pb) atoms that cause strong exciton quenching through a small increase in methylammonium bromide (MABr) molar proportion, and we spatially confined the exciton in uniform MAPbBr3 nanograins (average diameter = 99.7 nanometers) formed by a nanocrystal pinning process and concomitant reduction of exciton diffusion length to 67 nanometers. These changes caused substantial increases in steady-state photoluminescence intensity and efficiency of MAPbBr3 nanograin layers.

References

Aug 5, 2014·Nature Nanotechnology·Zhi-Kuang TanRichard H Friend
Sep 1, 2014·Nature Nanotechnology·Jeong-Hyeok ImNam-Gyu Park
Nov 22, 2014·Chemical Communications : Chem Comm·Lidón Gil-EscrigHenk J Bolink
Nov 26, 2014·Advanced Materials·Young-Hoon KimTae-Woo Lee
Dec 17, 2014·Nature Communications·Marina R FilipFeliciano Giustino
Jun 9, 2015·ACS Applied Materials & Interfaces·Naresh K KumawatDinesh Kabra
Apr 3, 2014·The Journal of Physical Chemistry Letters·Ilya A Shkrob, Timothy W Marin

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Citations

Mar 8, 2016·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Miguel AnayaHernán Míguez
Feb 9, 2016·Journal of the American Chemical Society·Adam H SlavneyHemamala I Karunadasa
Apr 5, 2016·Chemical Reviews·Bayrammurad Saparov, David B Mitzi
Apr 22, 2016·Nano Letters·Yuanyue LiuWilliam A Goddard Iii
May 12, 2016·Chemical Communications : Chem Comm·Saikat BhaumikNripan Mathews
May 12, 2016·Advanced Materials·Wentao XuTae-Woo Lee
May 18, 2016·Physical Chemistry Chemical Physics : PCCP·Wee Kiang ChongTze Chien Sum
May 21, 2016·The Journal of Physical Chemistry. a·Naresh K KumawatDinesh Kabra
May 24, 2016·Advanced Materials·Sjoerd A VeldhuisSubodh G Mhaisalkar
Jun 24, 2016·Advanced Materials·Jinwoo ByunTae-Woo Lee
Jun 28, 2016·Nature Nanotechnology·Mingjian YuanEdward H Sargent
Jun 28, 2016·Physical Chemistry Chemical Physics : PCCP·Swee Sien LimTze Chien Sum
Jun 24, 2016·The Journal of Physical Chemistry Letters·May L LaiZhi-Kuang Tan
Jul 16, 2016·Advanced Materials·Guichuan XingTze Chien Sum
Aug 31, 2016·Topics in Current Chemistry·Michele SessoloHenk J Bolink
Aug 20, 2016·Chemical Communications : Chem Comm·Taiyang ZhangYixin Zhao
Oct 30, 2016·Proceedings of the National Academy of Sciences of the United States of America·Young-Hoon KimTae-Woo Lee
Sep 24, 2016·ACS Applied Materials & Interfaces·Chiung-Fu HuangFang-Chung Chen
Nov 10, 2016·Optics Express·Guy L WhitworthIfor D W Samuel
Sep 27, 2016·ACS Applied Materials & Interfaces·Alessandro Lorenzo PalmaAldo Di Carlo
Sep 27, 2016·Journal of the American Chemical Society·Ajay Ram Srimath KandadaGuglielmo Lanzani
Nov 4, 2016·The Journal of Physical Chemistry Letters·Silvia ColellaAndrea Listorti
Oct 18, 2016·Chemical Communications : Chem Comm·Yupeng ZhangQiaoliang Bao
Nov 4, 2016·The Journal of Physical Chemistry Letters·Xiaoyu ZhangWilliam W Yu

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