Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151832
Title: Recent advancements and perspectives on light management and high performance in perovskite light-emitting diodes
Authors: Kar, Shaoni
Nur Fadilah Jamaludin
Yantara, Natalia
Mhaisalkar, Subodh Gautam
Leong, Wei Lin
Keywords: Engineering::Materials::Photonics and optoelectronics materials
Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2021
Source: Kar, S., Nur Fadilah Jamaludin, Yantara, N., Mhaisalkar, S. G. & Leong, W. L. (2021). Recent advancements and perspectives on light management and high performance in perovskite light-emitting diodes. Nanophotonics, 10(8), 2103-2143. https://dx.doi.org/10.1515/nanoph-2021-0033
Project: NRFCRP14-2014-03 
NRF2018-ITC001-001 
2018-T2-1-075 
2019-T2-2-106 
W1925d0106 
Journal: Nanophotonics 
Abstract: Perovskite semiconductors have experienced meteoric rise in a variety of optoelectronic applications. With a strong foothold on photovoltaics, much focus now lies on their light emission applications. Rapid progress in materials engineering have led to the demonstration of external quantum efficiencies that surpass the previously established theoretical limits. However, there remains much scope to further optimize the light propagation inside the device stack through careful tailoring of the optical processes that take place at the bulk and interface levels. Photon recycling in the emitter material followed by efficient outcoupling can result in boosting external efficiencies up to 100%. In addition, the poor ambient and operational stability of these materials and devices restrict further commercialization efforts. With best operational lifetimes of only a few hours reported, there is a long way to go before perovskite LEDs can be perceived as reliable alternatives to more established technologies like organic or quantum dot-based LED devices. This review article starts with the discussions of the mechanism of luminescence in these perovskite materials and factors impacting it. It then looks at the possible routes to achieve efficient outcoupling through nanostructuring of the emitter and the substrate. Next, we analyze the instability issues of perovskite-based LEDs from a photophysical standpoint, taking into consideration the underlying phenomena pertaining to defects, and summarize recent advances in mitigating the same. Finally, we provide an outlook on the possible routes forward for the field and propose new avenues to maximally exploit the excellent light-emitting capabilities of this family of semiconductors.
URI: https://hdl.handle.net/10356/151832
ISSN: 2192-8614
DOI: 10.1515/nanoph-2021-0033
Rights: © 2021 Shaoni Kar et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 International License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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