Large-scale planar and spherical light-emitting diodes based on arrays of perovskite quantum wires

Daquan Zhang, Qianpeng Zhang, Beitao Ren, Yudong Zhu, Mohamed Abdellah, Yu Fu, Bryan Cao, Chen Wang, Leilei Gu, Yucheng Ding, Kwong Hoi Tsui, Sufeng Fan, Swapnadeep Poddar, Lei Shu, Yuting Zhang, Dai Bin Kuang, Jin Feng Liao, Yang Lu, Kaibo Zheng, Zhubing HeZhiyong Fan

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

Halide perovskites are enticing candidates for highly efficient planar light-emitting diodes (LEDs) with commercial potential in displays and lighting. However, it remains a challenge for conventional solution fabrication processes to fabricate large-scale or non-planar LEDs due to the non-uniformity of perovskite films in conjunction with material stability issues. Here large-area highly uniform arrays of crystalline perovskite quantum wires are grown with emission spectra covering the whole visible range. Photoluminescence quantum yield of up to 92% and 5,644 hours as the time for photoluminescence to degrade down to its 50% of the initial value under ambient conditions are achieved for MAPbBr3 quantum wires. LEDs based on these quantum wires on rigid and flexible planar substrates are fabricated up to a four-inch wafer size and also unique three-dimensional spherical LEDs with outstanding uniformity are reported. The results suggest that the approach developed here can be generalized to other unconventional three-dimensional LEDs in the future.

Original languageEnglish
Pages (from-to)284-290
Number of pages7
JournalNature Photonics
Volume16
Issue number4
DOIs
Publication statusPublished - Apr 2022
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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