Pressure-induced non-radiative losses in halide perovskite light-emitting diodes

Young Kwang Jung, Mayami Abdulla, Richard H. Friend, Samuel D. Stranks, Aron Walsh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The control of non-radiative losses in light-emitting diodes (LEDs) based on metal halide perovskites is crucial to improve device efficiency. Recent studies have shown a correlation between lattice strain and electron-hole recombination. To consolidate the concept, we investigate how external pressure (strain) affects the crystal structure, electronic properties, point defect concentration, and luminescence efficiency of CH3NH3PbBr3. Relativistic first-principles calculations reveal enhanced Rashba splitting and Schottky defect disorder under compression, which produce a pronounced decrease in the electroluminescence peak energy and intensity in operating CH3NH3PbBr3 LEDs. The resulting model sheds light on the factors underpinning the intricate strain-property relationships in soft crystalline semiconductors.

Original languageEnglish
Pages (from-to)12560-12568
Number of pages9
JournalJournal of Materials Chemistry C
Issue number35
Publication statusPublished - 2022 Aug 12

Bibliographical note

Publisher Copyright:
© 2022 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Materials Chemistry


Dive into the research topics of 'Pressure-induced non-radiative losses in halide perovskite light-emitting diodes'. Together they form a unique fingerprint.

Cite this