Sellotape Exfoliated Layered Quasi-2D Perovskite Thin Film for Efficient Light-Emitting Diodes

Liu, Yanliang1,2; Chen, Fang1; Jiang, Zhengyan1; Li, Yang1; Zhou, Xianyong1; Wu, Jiawen3; Chen, Shi3; Zhang, Luozheng3; Li, Yaru3; Liu, Chang3; Bae, Sang-Hoon4,5; Lee, Bo Ram6; Huang, Boyuan1; Wang, Xingzhu3; Lee, Yun Seog7; Kim, Jeehwan4,5; Park, Sung Heum6; Yu, Xue-Feng2; Xu, Baomin1

2022-08-01

10.1002/adom.202200885

Advanced Optical Materials   Impact Factor & Quartile

2195-1071

In 2004, K. S. Novoselov and A. K. Geim et al. have used sellotape to peel off the layered 2D graphite, and successfully obtained few-layer thin graphene. Inspired by this, herein, the sellotape is initially used to exfoliate the layered Ruddlesden-Popper (RP) quasi-2D perovskite film for efficient light-emitting diodes application. The top surface layer of quasi-2D perovskite film is mechanically peeled off by the sellotape without damaging the crystalline region below, which minimizes the poor conductivity issue of quasi-2D perovskite film owing to the decreased defect density. Moreover, the exfoliated quasi-2D film exhibits low charge traps density and enhanced energy transfer from low-dimensional to high-dimensional domains due to the elimination of surface defective layer and the recrystallization of quasi-2D perovskite crystal, leading to high photoluminescence quantum yield (PLQY) up to 83.2%. Subsequently, an efficient perovskite light-emitting diode based on the exfoliated quasi-2D perovskite thin film is achieved with high current efficiency of 46.0 cd m(-2) and excellent external quantum efficiency (EQE) up to 14.8%.

conductivity light-emitting diodes quasi-2D perovskites sellotape exfoliation surface defects

SCI ; EI

English

First ; Corresponding

National Research Foundation of Korea (NRF) - Ministry of Science and ICT[2021M3H4A1A02057007]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:000835804000001

WILEY-V C H VERLAG GMBH

20223312573751

Energy transfer ; Exfoliation (materials science) ; Graphene ; Perovskite ; Quantum efficiency ; Thin films

Minerals:482.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Quantum Theory; Quantum Mechanics:931.4 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Mat Interfaces Ctr, Shenzhen Inst Adv Technol, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Dept Mat Sci & Engn, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
4.MIT, Elect Res Lab, Cambridge, MA 02139 USA
5.MIT, Dept Mech Engn, Cambridge, MA 02139 USA
6.Pukyong Natl Univ, Dept Phys, Busan 48513, South Korea
7.Seoul Natl Univ, Dept Mech Engn, Seoul 08826, South Korea

Liu, Yanliang,Chen, Fang,Jiang, Zhengyan,et al. Sellotape Exfoliated Layered Quasi-2D Perovskite Thin Film for Efficient Light-Emitting Diodes[J]. Advanced Optical Materials,2022,10.

Liu, Yanliang.,Chen, Fang.,Jiang, Zhengyan.,Li, Yang.,Zhou, Xianyong.,...&Xu, Baomin.(2022).Sellotape Exfoliated Layered Quasi-2D Perovskite Thin Film for Efficient Light-Emitting Diodes.Advanced Optical Materials,10.

Liu, Yanliang,et al."Sellotape Exfoliated Layered Quasi-2D Perovskite Thin Film for Efficient Light-Emitting Diodes".Advanced Optical Materials 10(2022).