Properties of mesoporous hybrid perovskite nanocrystals and its application in light-emitting diodes

Bingfeng Fan; Lei Hu; Guojie Chen; Jinbao Zhang; Xiaoli Zhang

doi:10.1088/1361-6528/ac1a92

Properties of mesoporous hybrid perovskite nanocrystals and its application in light-emitting diodes

Nanotechnology. 2021 Sep 7;32(48). doi: 10.1088/1361-6528/ac1a92.

Authors

Bingfeng Fan¹, Lei Hu², Guojie Chen¹, Jinbao Zhang³, Xiaoli Zhang²

Affiliations

¹ Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of physics and Optoelectronic Engineering, Foshan University, Foshan 528225, People's Republic of China.
² Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
³ Fujian Provincial Key Laboratory of Advanced Materials, School of Materials, Xiamen University, Xiamen, 361005, People's Republic of China.

PMID: 34348247
DOI: 10.1088/1361-6528/ac1a92

Abstract

We fabricated mesoporous perovskite nanocrystal for the first time, and investigated its optical properties and application in light-emitting diodes (LEDs). The transformation of mesoporous structure can be ascribed to the decomposition of nanocrystals under dilution condition, which results in the blueshift of luminescence. The mesoporous nanocrystals under proper dilution may achieve improved perovskite LEDs, with maximum luminance and current efficiency of 23370 cd m^-2and 6.7 cd A^-1, respectively. This work provide an avenue to the optical engineering of perovskite nanocrystals, and demonstrate that perovskite concentration is one of key factors for realizing efficient LEDs.

Keywords: light-emitting diodes; mesoporous structure; perovskite nanocrystals.