PEDOT: PSS doped with cesium chloride for highly efficient and bright metal halide perovskite light-emitting diodes

Ming-liang LI; Ke-bin LIN; Jian-xun LU; Wen-jing FENG; Qing-shan MA; Wen-hua ZHANG; Zhan-hua WEI

doi:10.37188/CJLCD.2020-0272

您当前的位置：

首页 >

文章列表页 >

PEDOT: PSS doped with cesium chloride for highly efficient and bright metal halide perovskite light-emitting diodes

Perovskite Light-Emitting Materials and Devices | 更新时间：2021-02-01

- PEDOT: PSS doped with cesium chloride for highly efficient and bright metal halide perovskite light-emitting diodes
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 1, Pages: 141-148(2021)
- 作者机构：
  
  1.中国工程物理研究院化工材料研究所四川新材料中心, 四川成都 610200
  2.华侨大学材料科学与工程学院发光材料与信息显示研究院, 福建厦门 361021
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;Natural Science Foundation of Sichuan
- DOI：10.37188/CJLCD.2020-0272
  CLC： TN383.1
- Received：10 October 2020，
  
  Accepted：11 November 2020，
  
  Published：2021-01
- 稿件说明：
移动端阅览
Ming-liang LI, Ke-bin LIN, Jian-xun LU, et al. PEDOT: PSS doped with cesium chloride for highly efficient and bright metal halide perovskite light-emitting diodes[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 141-148.
DOI：

Ming-liang LI, Ke-bin LIN, Jian-xun LU, et al. PEDOT: PSS doped with cesium chloride for highly efficient and bright metal halide perovskite light-emitting diodes[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 141-148. DOI： 10.37188/CJLCD.2020-0272.

摘要

空穴传输层（Hole Transport Layer，HTL）是金属卤化物钙钛矿发光二极管（Perovskite Light-emitting Diodes，Pero-LEDs）中影响载流子传输平衡的一个重要因素。聚（3，4-乙烯基二氧噻吩）：聚苯乙烯磺酸钠（Poly（3，4-ethylenedioxythiophene）：Poly（styrene sulfonate），PEDOT：PSS）薄膜因其优异的导电性能、光透过率以及简单的溶液制膜工艺，而广泛应用于Pero-LEDs的HTL。然而，钙钛矿发光层的价带与PEDOT：PSS薄膜最高占据分子轨道（Highest Occupied Molecular Orbital，HOMO）能级之间能带差较大，增大了空穴注入势垒，继而降低了器件效率。本文通过向PEDOT：PSS水溶液掺入适量的氯化铯（CsCl）添加剂，有效调控了PEDOT：PSS薄膜的HOMO能级，使其与钙钛矿发光层更加匹配；同时CsCl掺杂也提高了PEDOT：PSS薄膜的空穴传输能力，使载流子传输更趋于平衡。基于改性的PEDOT：PSS薄膜，最佳器件达到了124 012 cd/m

的高亮度，其最大外量子效率（External Quantum Efficiency，EQE）达到了10.39%；相对于未掺杂的样品，最大亮度增加了25.49%，最大EQE增加了63.88%。

Abstract

Hole Transport Layer (HTL) is an important factor affecting carrier transport balance in metal halide Perovskite Light-emitting Diodes (Pero-LEDs). Poly(3

4-ethylenedioxythiophene):Poly (styrene sulfonate) (PEDOT:PSS) films are widely used as the HTL of Pero-LEDs due to their excellent conductive properties

light transmittance and simple solution preparation. However

the gap between the valence band of perovskite and the highest occupied molecular orbital (HOMO) energy level of PEDOT:PSS film is large

which increases the hole injection barrier and thus reduces the device efficiency. Herein

a simple method of directly adding cesium chloride (CsCl) into PEDOT:PSS aqueous solution improved the hole transport capacity of PEDOT:PSS film significantly

making the carrier transport more balanced. Based on the modified PEDOT:PSS film

the best device reaches high brightness of 124 012 cd/m

and the maximum external quantum efficiency (EQE) reaches 10.39%

respectively. Compared with the undoped samples

the maximum brightness increased by 25.49%

and the maximum EQE increased by 63.88%.

关键词

Keywords

references

TAN Z K, MOGHADDAM R S, LAI M L, et al . Bright light-emitting diodes based on organometal halide perovskite[J]. Nature Nanotechnology , 2014, 9(9):687-692.

CHIBA T, HAYASHI Y, EBE H, et al . Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices[J]. Nature Photonics , 2018, 12(11):681-687.

ZHAO B D, BAI S, KIM V, et al . High-efficiency perovskite-polymer bulk heterostructure light-emitting diodes[J]. Nature Photonics , 2018, 12(12):783-789.

CAO Y, WANG N N, TIAN H, et al . Perovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures[J]. Nature , 2018, 562(7726):249-253.

LIN K B, XING J, QUAN L N, et al . Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent[J]. Nature , 2018, 562(7726):245-248.

LU J X, FENG W J, MEI G D, et al . Ultrathin PEDOT:PSS enables colorful and efficient perovskite light-emitting diodes[J]. Advanced Science , 2020, 7(11):2000689.

袁青松, 付祥恩.基于激基复合物的高效单色和白色有机发光二极管[J].液晶与显示, 2020, 35(9):892-899.

YUAN Q S, FU X E. High efficient monochromatic and white organic light-emitting diodes based on exciplex[J]. Chinese Journal of Liquid Crystals and Displays , 2020, 35(9):892-899. (in Chinese)

曹丽娟, 江从彪, 罗宇, 等.低启亮电压全溶液加工量子点发光器件[J].液晶与显示, 2020, 35(8):785-794.

CAO L J, JIANG C B, LUO Y, et al . All-solution processed quantum dot light-emitting diodes with low turn-on voltage[J]. Chinese Journal of Liquid Crystals and Displays , 2020, 35(8):785-794. (in Chinese)

LIU Z Y, LIU K K, WANG H H, et al . Solvent engineering approach via introducing poly (3, 4-ethylene dioxy-thiophene)-poly (styrene sulfonate) (PEDOT:PSS) into photosensitive absorber layer for ambient temperature processed efficient inverted planar perovskite solar cells[J]. Solar Energy , 2018, 176:1-9.

WANG Z J, LI Z R, ZHOU D L, et al . Low turn-on voltage perovskite light-emitting diodes with methanol treated PEDOT:PSS as hole transport layer[J]. Applied Physics Letters , 2017, 111(23):233304.

MENG Y, AHMADI M, WU X Y, et al . High performance and stable all-inorganic perovskite light emitting diodes by reducing luminescence quenching at PEDOT:PSS/Perovskites interface[J]. Organic Electronics , 2019, 64:47-53.

WU M G, ZHAO D, WANG Z J, et al . High-luminance perovskite light-emitting diodes with high-polarity alcohol solvent treating PEDOT:PSS as hole transport layer[J]. Nanoscale Research Letters , 2018, 13(1):128.

WEI Z H, PERUMAL A, SU R, et al . Solution-processed highly bright and durable cesium lead halide perovskite light-emitting diodes[J]. Nanoscale , 2016, 8(42):18021-18026.

Views

196

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Preparation of Highly Conductive Polymer PEDOT:PSS by Post-Treatment

Research progress on performance regulation of lyotropic chromonic liquid crystals

High-efficiency flexible OLED devices with PEDOT: PSS/HAT-CN double hole injection layer

Electroluminescent Spectral Stability of Multilayer Doping White Organic Light-Emitting Diodes

Related Author

Zhan-hua WEI

Wen-hua ZHANG

Qing-shan MA

Wen-jing FENG

Jian-xun LU

Ke-bin LIN

Ming-liang LI

TENG Feng

Related Institution

Sichuan Research Center of New Materials， Institute of Chemical Materials， China Academy of Engineering Physics

Institute of Luminescent Materials and Information Displays， College of Materials Science and Engineering， Huaqiao University

Department of Chemistry, School of Science, Beijing Jiaotong University

Institute of Optoelectronic Technology, School of Science, Beijing Jiaotong University

College of Electronic and Optical Engineering & College of Flexible Electronics（Future Technology）， Nanjing University of Posts and Telecommunications

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰