Jump to main content
Jump to site search


Bright and Efficient Light-emitting Diodes Based on MA/Cs Double Cation Perovskite Nanocrystals

Abstract

High quantum yield, tunable band gap, and high color purity of perovskite nanocrystals make this class of materials attractive for electronic and optoelectronic applications including solar cells, photodetectors, and light emitting diodes. Here we for the first time demonstrate facile synthesis of perovskite nanocrystal based on (CH3NH3)1-xCsxPbBr3. The emission property, photoluminescence and stability of this mixed-cation perovskite nanocrystal have been intensively studied, which are significantly related to the content of cesium in the composition. The as-obtained (CH3NH3)1-xCsxPbBr3 nanocrystals are employed as emission layer in perovskite light emitting diodes, and the device with optimized perovskite nanocrystals (Cs doping x=0.3) shows a maximum luminescence of 24500 cd m-2, nearly ten-fold higher than previous reported perovskite devices based on MAPbBr3 nanocrystals. This work opens a new avenue for the fabrication of efficient perovskite nanocrystals and provides great potential of developing performed perovskite LEDs based on mixed-cation perovskite nanocrystals.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 27 Mar 2017, accepted on 13 May 2017 and first published on 15 May 2017


Article type: Paper
DOI: 10.1039/C7TC01300K
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    Bright and Efficient Light-emitting Diodes Based on MA/Cs Double Cation Perovskite Nanocrystals

    B. Xu, W. Wang, X. Zhang, W. Cao, D. Wu, S. Liu, H. T. Dai, S. Chen, K. Wang and X. Sun, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC01300K

Search articles by author