Deep Blue Layered Lead Perovskite Light‐Emitting Diode | Zendy

Yan Siyu | Zendy; Tian Wanli | Zendy; Chen Hua | Zendy; Tang Kaixin | Zendy; Lin Tingting | Zendy; Zhong Gaoyu | Zendy; Qiu Longzhen | Zendy; Pan Xiaoyong | Zendy; Wang Weizhi | Zendy

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Deep Blue Layered Lead Perovskite Light‐Emitting Diode

Author(s) -

Yan Siyu,

Tian Wanli,

Chen Hua,

Tang Kaixin,

Lin Tingting,

Zhong Gaoyu,

Qiu Longzhen,

Pan Xiaoyong,

Wang Weizhi

Publication year - 2021

Publication title -

advanced optical materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.89

H-Index - 91

ISSN - 2195-1071

DOI - 10.1002/adom.202001709

Subject(s) - perovskite (structure) , materials science , photoluminescence , light emitting diode , optoelectronics , brightness , halide , diode , quantum yield , quantum efficiency , deep blue , blue light , lead (geology) , luminescence , optics , photochemistry , inorganic chemistry , fluorescence , crystallography , physics , chemistry , geomorphology , geology

The perovskite light‐emitting diode (PeLED) based on lead has the advantages of excellent purity, high efficiency, and good brightness. In order to develop a highly luminescent and deep blue lead halide perovskite light emitting diode, here, a two‐dimensional layered lead perovskite owning the high deep blue photoluminescence quantum yield 80% at 445 nm is reported. In addition, the maximum recording brightness and the peak external quantum efficiency of the PeLED is 1315 cd m −2 and 3.08%, respectively, which outdoes that of previously reported deep blue lead PeLEDs. The half‐life of the device reaches 3.5 h at 5 V. This work clearly shows that the layered lead perovskite will provide a route to fabricate stable and high‐performance deep blue emission PeLEDs.

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