Fabrication of centimeter-scale MAPbBr3 light-emitting device with high color purity

Shih Jung Chang, Liang Chen Li, Tzu Hsin Hong, Muthaiah Shellaiah, Kien-Wen Sun*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In this study, 3 cm × 3 cm organometallic halide perovskite (MAPbBr3) nanocrystalline thin film and light-emitting diodes (LEDs) were synthesized and fabricated using a combined thermal evaporation and spin-coating technique. PEDOT:PSS(Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) and TPBi(2,2′,2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1- H-benzimidazole)) were used as the hole and electron transport layers for the LEDs, respectively. The structural, photophysical, electronic, and electroluminescent properties of the devices were measured and characterized. The p-i-n device showed a turn-on voltage of approximately 1.5 V, with electroluminescence centered at 535 nm at a full width at half maximum (FWHM) of 14 nm. The device displayed high color purity, an external quantum efficiency, and a maximum luminance of 100%, 1.86%, and 1610 cd/m2, respectively. Results demonstrated the advantages of combining thermal evaporation and solution process in producing larger-area perovskite display and lighting devices.

Original languageEnglish
Article number105931
JournalOrganic Electronics
Volume86
DOIs
StatePublished - Nov 2020

Keywords

  • Color purity
  • Electroluminescence
  • Light emitting device
  • Luminance
  • Methylammonium lead bromide
  • Nanocrystalline film
  • Spin-coating
  • Thermal evaporation

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