Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime
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Guangdong-Hong Kong-Macao Intelligent Micro-Nano Optoelectronic Technology Joint Laboratory, Foshan University, Foshan 528225, China
2
School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2021, 11(1), 103; https://doi.org/10.3390/nano11010103
Received: 7 December 2020
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Revised: 23 December 2020
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Accepted: 26 December 2020
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Published: 4 January 2021
(This article belongs to the Special Issue Low-Dimensional Perovskites: Physical Properties and Applications)
Recently, perovskite light-emitting diodes (PeLEDs) are seeing an increasing academic and industrial interest with a potential for a broad range of technologies including display, lighting, and signaling. The maximum external quantum efficiency of PeLEDs can overtake 20% nowadays, however, the lifetime of PeLEDs is still far from the demand of practical applications. In this review, state-of-the-art concepts to improve the lifetime of PeLEDs are comprehensively summarized from the perspective of the design of perovskite emitting materials, the innovation of device engineering, the manipulation of optical effects, and the introduction of advanced encapsulations. First, the fundamental concepts determining the lifetime of PeLEDs are presented. Then, the strategies to improve the lifetime of both organic-inorganic hybrid and all-inorganic PeLEDs are highlighted. Particularly, the approaches to manage optical effects and encapsulations for the improved lifetime, which are negligibly studied in PeLEDs, are discussed based on the related concepts of organic LEDs and Cd-based quantum-dot LEDs, which is beneficial to insightfully understand the lifetime of PeLEDs. At last, the challenges and opportunities to further enhance the lifetime of PeLEDs are introduced.
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Keywords:
light-emitting diode; perovskite; lifetime; light outcoupling; encapsulation
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MDPI and ACS Style
Xiao, P.; Yu, Y.; Cheng, J.; Chen, Y.; Yuan, S.; Chen, J.; Yuan, J.; Liu, B. Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime. Nanomaterials 2021, 11, 103. https://doi.org/10.3390/nano11010103
AMA Style
Xiao P, Yu Y, Cheng J, Chen Y, Yuan S, Chen J, Yuan J, Liu B. Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime. Nanomaterials. 2021; 11(1):103. https://doi.org/10.3390/nano11010103
Chicago/Turabian StyleXiao, Peng, Yicong Yu, Junyang Cheng, Yonglong Chen, Shengjin Yuan, Jianwen Chen, Jian Yuan, and Baiquan Liu. 2021. "Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime" Nanomaterials 11, no. 1: 103. https://doi.org/10.3390/nano11010103
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