Efficient and High-Color-Purity Light-Emitting Diodes Based on In Situ Grown Films of CsPbX3 (X = Br, I) Nanoplates with Controlled Thicknesses

被引：196

作者：

Si, Junjie ^{[1
]}

Liu, Yang ^{[1
]}

He, Zhuofei ^{[2
]}

Du, Hui

Du, Kai ^{[1
,3
]}

Chen, Dong ^{[2
]}

Li, Jing ^{[4
]}

Xu, Mengmeng ^{[6
,7
]}

Tian, He ^{[3
]}

He, Haiping ^{[4
]}

Di, Dawei ^{[5
]}

Ling, Changqing ^{[6
,7
]}

Cheng, Yingchun ^{[6
,7
]}

Wang, Jianpu ^{[6
,7
]}

Jin, Yizheng ^{[2
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Ctr Chem High Performance & Novel Mat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Chem, State Key Lab Silicon Mat, Ctr Chem High Performance & Novel Mat, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Ctr Elect Microscope, State Key Lab Silicon Mat, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[4] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[5] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 OHE, England

[6] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, KLOFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[7] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

来源：

ACS NANO | 2017年 / 11卷 / 11期

基金：

中国国家自然科学基金;

关键词：

perovskite; light-emitting diode; in situ grown; nanoplate; color purity; quantum well; efficiency; CESIUM LEAD HALIDE; PEROVSKITES; BRIGHT; VOLTAGE;

D O I：

10.1021/acsnano.7b05191

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a facile solution-based approach to the in situ growth of perovskite films consisting of monolayers of CsPbBr3 nanoplates passivated by bulky phenylbutylammonium (PBA) cations, that is, two-dimensional layered PBA(2)(CsPbBr3)(n-1)PbBr4 perovskites. Optimizing film formation processes leads to layered perovskites with controlled n values in the range of 12-16. The layered perovskite emitters show quantum-confined band gap energies with a narrow distribution, suggesting the formation of thickness-controlled quantum-well (TCQW) structures. The TCQW CsPbBr3 films exhibit smooth surface features, narrow emission line widths, low trap densities, and high room-temperature photoluminance quantum yields, resulting in high-color-purity green light-emitting diodes (LEDs) with remarkably high external quantum efficiencies (EQEs) of up to 10.4%. The solution-based approach is extended to the preparation of TCQW CsPbI3 films for high-color-purity red perovskite LEDs with high EQEs of up to 7.3%.

引用

页码：11100 / 11107

页数：8

共 53 条

[1] 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
[2] 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
[3] PEROVSKITE PHYSICS Extremely efficient internal exciton dissociation through edge states in layered 2D perovskites
Blancon, J. -C.
Tsai, H.
Nie, W.
Stoumpos, C. C.
Pedesseau, L.
Katan, C.
Kepenekian, M.
Soe, C. M. M.
Appavoo, K.
Sfeir, M. Y.
Tretiak, S.
Ajayan, P. M.
Kanatzidis, M. G.
Even, J.
Crochet, J. J.
Mohite, A. D.
[J]. SCIENCE, 2017, 355 (6331) : 1288 - 1291
[4] Efficient Visible Quasi-2D Perovskite Light-Emitting Diodes
Byun, Jinwoo
Cho, Himchan
Wolf, Christoph
Jang, Mi
Sadhanala, Aditya
Friend, Richard H.
Yang, Hoichang
Lee, Tae-Woo
[J]. ADVANCED MATERIALS, 2016, 28 (34) : 7515 - 7520
[5] 2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications
Cao, Duyen H.
Stoumpos, Constantinos C.
Farha, Omar K.
Hupp, Joseph T.
Kanatzidis, Mercouri G.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (24) : 7843 - 7850
[6] High-Efficiency Perovskite Quantum-Dot Light-Emitting Devices by Effective Washing Process and Interfacial Energy Level Alignment
Chiba, Takayuki
Hoshi, Keigo
Pu, Yong-Jin
Takeda, Yuya
Hayashi, Yukihiro
Ohisa, Satoru
Kawata, So
Kido, Junji
[J]. ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (21) : 18054 - 18060
[7] 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
[8] Solution-processed, high-performance light-emitting diodes based on quantum dots
Dai, Xingliang
Zhang, Zhenxing
Jin, Yizheng
Niu, Yuan
Cao, Hujia
Liang, Xiaoyong
Chen, Liwei
Wang, Jianpu
Peng, Xiaogang
[J]. NATURE, 2014, 515 (7525) : 96 - 99
[9] An improved experimental determination of external photoluminescence quantum efficiency
deMello, JC
Wittmann, HF
Friend, RH
[J]. ADVANCED MATERIALS, 1997, 9 (03) : 230 - &
[10] High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors
Deschler, Felix
Price, Michael
Pathak, Sandeep
Klintberg, Lina E.
Jarausch, David-Dominik
Higler, Ruben
Huettner, Sven
Leijtens, Tomas
Stranks, Samuel D.
Snaith, Henry J.
Atatuere, Mete
Phillips, Richard T.
Friend, Richard H.
[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (08): : 1421 - 1426

← 1 2 3 4 5 6 →