Efficient Thermally Evaporated Near-Infrared Perovskite Light-Emitting Diodes via Phase Regulation (IMAGE)

Shanghai Jiao Tong University Journal Center

Efficient Thermally Evaporated Near-Infrared Perovskite Light-Emitting Diodes via Phase Regulation

Caption

  • α-phase formamidinium lead triiodide (FAPbI3) was prepared based on triple-source co-evaporation.
  • A partial Cs-doping in the FAPbI3 can help with the suppression of the non-radiative recombination, elimination of the metallic Pb, improvement of spatial confinement.
  • Near-infrared perovskite light-emitting diodes (NIR-PeLEDs) based on triple-source co-evaporated FACsPbI3 thin films achieved a maximum external quantum efficiency of 10.25%, which was around 6 times higher than that of FAPbI3-based NIR-PeLEDs.

Credit

Siwei He, Lanxin Qin, Zhengzheng Liu, Jae-Wook Kang, Jiajun Luo, Juan Du.

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CC BY-NC-ND

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