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14 results on '"Zang, Jiaqing"'

8. Unveiling Crystal Orientation in Quasi‐2D Perovskite Films by In Situ GIWAXS for High‐Performance Photovoltaics

Author

Liang, Dong, primary, Dong, Chong, additional, Cai, Lei, additional, Su, Zhenhuang, additional, Zang, Jiaqing, additional, Wang, Chenyue, additional, Wang, Xuechun, additional, Zou, Yatao, additional, Li, Yajuan, additional, Chen, Li, additional, Zhang, Liujiang, additional, Hong, Zhiwei, additional, El‐Shaer, Abdelhamid, additional, Wang, Zhao‐Kui, additional, Gao, Xingyu, additional, and Sun, Baoquan, additional

Published
2021
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9. Coffee‐Stain‐Free Perovskite Film for Efficient Printed Light‐Emitting Diode

Author

Li, Ya, primary, Chen, Zhewei, additional, Liang, Dong, additional, Zang, Jiaqing, additional, Song, Zheheng, additional, Cai, Lei, additional, Zou, Yatao, additional, Wang, Xuechun, additional, Wang, Yusheng, additional, Li, Pandeng, additional, Gao, Xingyu, additional, Ma, Zhongsheng, additional, Mu, Xinju, additional, El‐Shaer, Abdelhamid, additional, Xie, Liming, additional, Su, Wenming, additional, Song, Tao, additional, and Sun, Baoquan, additional

Published
2021
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14. High‐Efficiency Top‐Emitting Green Perovskite Light Emitting Diode with Quasi Lambertian Emission.

Author

Cai, Lei, Zhou, Jungui, Bai, Guilin, Zang, Jiaqing, El‐Shaer, Abdelhamid, Song, Tao, Fung, Man‐Keung, and Sun, Baoquan

Subjects
POLARITONS, PEROVSKITE, OPTICAL resonators, MOLYBDENUM oxides, PLASMA instabilities, QUANTUM efficiency, LIGHT emitting diodes
Abstract

Metal halide perovskite light‐emitting diodes (PeLEDs) are regarded as alternative candidates for next‐generation display technologies due to their high efficiency, superior color purity, tunable bandgap. However, the research on transparent and top‐emitting PeLED with Lambertian emission profile significantly lags behind due to optical microcavity effect, which has become one of the main obstacles for potential practical display applications. Here, strategies are developed to suppress the microcavity effect by enhancing the transmission of the semitransparent electrode and extending the optical cavity length. Besides, a nanopatterned structure is incorporated to suppress the surface plasma and waveguide mode effect. Based on the above combination strategies, a transparent PeLED yields a record total external quantum efficiency (EQE) of 16.1% with Lambertian emission by depositing high refractive index molybdenum oxide on the semitransparent cathode. Besides, a high EQE of 13.6% of a top‐emitting device with quasi‐Lambertian emission is achieved by stretching the optical distance between two reflective layers and enhancing the transmission of the semitransparent electrode. The nanopatterned structure enables suppressed waveguide mode and surface plasmon polariton dilapidation of top‐emitting PeLEDs. This work paves a path to design transparent and top‐emitting PeLEDs for potential applications in both traditional and novel transparent displays. [ABSTRACT FROM AUTHOR]

Published
2022
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