Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent

@article{Lin2018PerovskiteLD,
  title={Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent},
  author={Kebin Lin and Jun Xing and Li Na Quan and F. Pelayo Garc{\'i}a Arquer and Xiwen Gong and Jianxun Lu and Liqiang Xie and Weijie Zhao and Di Zhang and Chuanzhong Yan and Wenqiang Li and Xinyi Liu and Yan Lu and Jeffrey Kirman and Edward. H. Sargent and Qihua Xiong and Zhanhua Wei},
  journal={Nature},
  year={2018},
  volume={562},
  pages={245-248}
}
Metal halide perovskite materials are an emerging class of solution-processable semiconductors with considerable potential for use in optoelectronic devices1–3. For example, light-emitting diodes (LEDs) based on these materials could see application in flat-panel displays and solid-state lighting, owing to their potential to be made at low cost via facile solution processing, and could provide tunable colours and narrow emission line widths at high photoluminescence quantum yields4–8. However… 

51.5: Invited Paper: Fabrication of High Performance Perovskite Optoelectronic Devices

  • Zhanhua Wei
  • Materials Science
    SID Symposium Digest of Technical Papers
  • 2019
Metal halide perovskite materials are an emerging class of solution-processed semiconductors with considerable potential for use in optoelectronic devices. For example, light-emitting diodes (LEDs)

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Metal halide perovskites have accomplished excellent progress as forefront materials for near-infrared, red and green perovskite light-emitting-diodes (PeLEDs) with external quantum efficiencies

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The judicious alloying is shown to be critical to result in the better morphology with suppressed current leakage and enhanced light outcoupling and the combination of these composition engineering results in blueshifted emissions without reducing the quantum yield.

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...

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