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Device Engineering for All-Inorganic Perovskite Light-Emitting Diodes

1
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
2
Guangdong R&D Center for Technological Economy, Guangzhou 510000, China
3
Institute of Semiconductors, South China Normal University, Guangzhou 510000, China
4
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
5
LUMINOUS! Centre of Excellent for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(7), 1007; https://doi.org/10.3390/nano9071007
Received: 10 June 2019 / Revised: 4 July 2019 / Accepted: 10 July 2019 / Published: 12 July 2019
(This article belongs to the Special Issue Nanophotonics and Its Applications)
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PDF [4115 KB, uploaded 12 July 2019]
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Abstract

Recently, all-inorganic perovskite light-emitting diodes (PeLEDs) have attracted both academic and industrial interest thanks to their outstanding properties, such as high efficiency, bright luminance, excellent color purity, low cost and potentially good operational stability. Apart from the design and treatment of all-inorganic emitters, the device engineering is another significant factor to guarantee the high performance. In this review, we have summarized the state-of-the-art concepts for device engineering in all-inorganic PeLEDs, where the charge injection, transport, balance and leakage play a critical role in the performance. First, we have described the fundamental concepts of all-inorganic PeLEDs. Then, we have introduced the enhancement of device engineering in all-inorganic PeLEDs. Particularly, we have comprehensively highlighted the emergence of all-inorganic PeLEDs, strategies to improve the hole injection, approaches to enhance the electron injection, schemes to increase the charge balance and methods to decrease the charge leakage. Finally, we have clarified the issues and ways to further enhance the performance of all-inorganic PeLEDs. View Full-Text
Keywords: light-emitting diode; all-inorganic perovskite; charge injection; charge balance; charge leakage light-emitting diode; all-inorganic perovskite; charge injection; charge balance; charge leakage
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Luo, D.; Chen, Q.; Qiu, Y.; Zhang, M.; Liu, B. Device Engineering for All-Inorganic Perovskite Light-Emitting Diodes. Nanomaterials 2019, 9, 1007.

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