Spatial Crystallization Homogenization Boosts Scalable Perovskite Light‐Emitting Diodes

Y Yu Xia J Jia‐Cheng Li (State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China) Z Zhipeng Zhang (College of Materials Science and Engineering) N Nan Li Y Ye Wang Y Yu‐Han Li (State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou 215123 P. R. China) K Kai‐Li Wang (Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China) C Chun‐Hao Chen (Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China) J Jing Chen L Lei Huang (BLSA-ZJU Research Center and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.) Y Yu‐Tong Yang (Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China) G Guichuan Xing B Baoquan Sun (Institute of Functional Nano and Soft Materials (FUNSOM) Soochow University Suzhou 215123 China) Z Zhao‐Kui Wang (Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China)

Abstract

Abstract Conventional antisolvent dripping methods face fundamental limitations in controlling crystallization kinetics, particularly manifesting as instantaneous nucleation and severe spatial inhomogeneity in scaled‐up perovskite films. Herein, a microdroplet‐phase antisolvent deposition technique is developed that establishes a controlled crystallization environment through delayed nucleation kinetics via mild antisolvent interaction and uniform microdroplet diffusion across extended substrates. The resulting small‐area (0.1 cm 2 ) device attains an external quantum efficiency (EQE) of 30.98% at 515 nm, ranking among the best‐performing green perovskite light‐emitting diodes (PeLEDs). A remarkable EQE of 23.21% is also realized when the active area expands to 6.25 cm 2 . This work provides a fundamental advancement in perovskite crystallization control and demonstrates a viable pathway toward industrial‐scale production of PeLEDs.

Article Details

Volume / Issue Vol. 37, Issue 42
Published October 01, 2025
ISSN 0935-9648
Publisher Unknown Publisher

Journal Info

Advanced Materials

Unknown Publisher

ISSN: 0935-9648 Physical Sciences

Authors (14)

Y

Yu Xia

J

Jia‐Cheng Li

State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China

Z

Zhipeng Zhang

College of Materials Science and Engineering

N

Nan Li

Y

Ye Wang

Y

Yu‐Han Li

State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou 215123 P. R. China

K

Kai‐Li Wang

Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China

C

Chun‐Hao Chen

Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China

J

Jing Chen

L

Lei Huang

BLSA-ZJU Research Center and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.

Y

Yu‐Tong Yang

Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China

G

Guichuan Xing

B

Baoquan Sun

Institute of Functional Nano and Soft Materials (FUNSOM) Soochow University Suzhou 215123 China

Z

Zhao‐Kui Wang

Institute of Functional Nano & Soft Materials (FUNSOM) State Key Laboratory of Bioinspired Interfacial Materials Science Soochow University Suzhou China