High-Brightness Blue and White LEDs based on Inorganic Perovskite Nanocrystals and their Composites

被引:252
作者
Yao, En-Ping [1 ,2 ]
Yang, Zhanlue [1 ]
Meng, Lei [1 ]
Sun, Pengyu [1 ]
Dong, Shiqi [1 ]
Yang, Ye
Yang, Yang [1 ]
机构
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[2] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 70101, Taiwan
基金
美国国家科学基金会;
关键词
light-emitting diodes; nanocrystals; perovskites; white light; CESIUM LEAD HALIDE; LIGHT-EMITTING-DIODES; SOLAR-CELLS; LOW-COST; EFFICIENCY; EMERGENCE; CSPBBR3; CSPBX3;
D O I
10.1002/adma.201606859
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Inorganic metal halide perovskite nanocrystals (NCs) have been employed universally in light-emitting applications during the past two years. Here, blue-emission (approximate to 470 nm) Cs-based perovskite NCs are derived by directly mixing synthesized bromide and chloride nanocrystals with a weight ratio of 2: 1. High-brightness blue perovskite light-emitting diodes (PeLEDs) are obtained by controlling the grain size of the perovskite films. Moreover, a white PeLED is demonstrated for the first time by blending orange polymer materials with the blue perovskite nanocrystals as the active layer. Exciton transfer from the blue nanocrystals to the orange polymers via Forster or Dexter energy transfer is analyzed through time resolved photoluminescence. By tuning the ratio between the perovskite nanocrystals and polymers, pure white light is achieved with the a CIE coordinate at (0.33,0.34).
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页数:7
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共 32 条
  • [1] Highly Reproducible Perovskite Solar Cells with Average Efficiency of 18.3% and Best Efficiency of 19.7% Fabricated via Lewis Base Adduct of Lead(II) Iodide
    Ahn, Namyoung
    Son, Dae-Yong
    Jang, In-Hyuk
    Kang, Seong Min
    Choi, Mansoo
    Park, Nam-Gyu
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (27) : 8696 - 8699
  • [2] Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control
    Akkerman, Quinten A.
    Motti, Silvia Genaro
    Kandada, Ajay Ram Srimath
    Mosconi, Edoardo
    D'Innocenzo, Valerio
    Bertoni, Giovanni
    Marras, Sergio
    Kamino, Brett A.
    Miranda, Laura
    De Angelis, Filippo
    Petrozza, Annamaria
    Prato, Mirko
    Manna, Liberato
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (03) : 1010 - 1016
  • [3] Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions
    Akkerman, Quinten A.
    D'Innocenzo, Valerio
    Accornero, Sara
    Scarpellini, Alice
    Petrozza, Annamaria
    Prato, Mirko
    Manna, Liberato
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (32) : 10276 - 10281
  • [4] Highly Luminescent Colloidal Nanoplates of Perovskite Cesium Lead Halide and Their Oriented Assemblies
    Bekenstein, Yehonadav
    Koscher, Brent A.
    Eaton, Samuel W.
    Yang, Peidong
    Alivisatos, A. Paul
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (51) : 16008 - 16011
  • [5] NiOx Electrode Interlayer and CH3NH2/CH3NH3PbBr3 Interface Treatment to Markedly Advance Hybrid Perovskite-Based Light-Emitting Diodes
    Chih, Yi-Kai
    Wang, Jian-Chih
    Yang, Rei-Ting
    Liu, Chi-Ching
    Chang, Yun-Chorng
    Fu, Yaw-Shyan
    Lai, Wei-Chi
    Chen, Peter
    Wen, Ten-Chin
    Huang, Yu-Ching
    Tsao, Cheng-Si
    Guo, Tzung-Fang
    [J]. ADVANCED MATERIALS, 2016, 28 (39) : 8687 - 8694
  • [6] Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes
    Cho, Himchan
    Jeong, Su-Hun
    Park, Min-Ho
    Kim, Young-Hoon
    Wolf, Christoph
    Lee, Chang-Lyoul
    Heo, Jin Hyuck
    Sadhanala, Aditya
    Myoung, NoSoung
    Yoo, Seunghyup
    Im, Sang Hyuk
    Friend, Richard H.
    Lee, Tae-Woo
    [J]. SCIENCE, 2015, 350 (6265) : 1222 - 1225
  • [7] PHOTOVOLTAICS Perovskite cells charge forward
    Green, Martin A.
    Bein, Thomas
    [J]. NATURE MATERIALS, 2015, 14 (06) : 559 - 561
  • [8] Green MA, 2014, NAT PHOTONICS, V8, P506, DOI [10.1038/NPHOTON.2014.134, 10.1038/nphoton.2014.134]
  • [9] Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidity
    Han, Yu
    Meyer, Steffen
    Dkhissi, Yasmina
    Weber, Karl
    Pringle, Jennifer M.
    Bach, Udo
    Spiccia, Leone
    Cheng, Yi-Bing
    [J]. JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (15) : 8139 - 8147
  • [10] Perovskite as Light Harvester: A Game Changer in Photovoltaics
    Kazim, Samrana
    Nazeeruddin, Mohammad Khaja
    Graetzel, Michael
    Ahmad, Shahzada
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (11) : 2812 - 2824