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Reconfigurable Perovskite LEC: Effects of Ionic Additives and Dual Function Devices
Author(s) -
Gets Dmitry,
Alahbakhshi Masoud,
Mishra Aditya,
Haroldson Ross,
Papadimitratos Alexios,
Ishteev Artur,
Saranin Danila,
Anoshkin Sergey,
Pushkarev Anatoly,
Danilovskiy Eduard,
Makarov Sergey,
Slinker Jason D.,
Zakhidov Anvar A.
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.202001715
Subject(s) - materials science , perovskite (structure) , light emitting diode , ambipolar diffusion , ionic bonding , optoelectronics , doping , ion , nanotechnology , chemical engineering , chemistry , plasma , physics , organic chemistry , quantum mechanics , engineering
Hybrid organic–inorganic perovskite light‐emitting devices (LEDs) have recently shown the characteristic dynamical behavior of light‐emitting electrochemical cells (LECs), with intrinsic ionic migration creating an electric double layer and internal p‐i‐n structure and by accumulation of ions at interfaces. Therefore, the development of perovskite light‐emitting and photovoltaic devices based on the concepts of LEC operation attracts much attention and clarifies general physical processes in perovskites. Here, new directions that can further improve perovskite optoelectronic devices and extend their functionalities using additive mobile ions are overviewed: 1) enhancing single‐layer LECs with lithium additives for increased efficiency and longer lifetime; 2) facilitating ionic motion in three‐layer perovskite LECs to create dual‐functional devices, operating as both LEC and solar cells; and 3) creating truly ambipolar LEC devices with carbon nanotubes as stable electrodes that leverage ionic doping. Taken together, the use of these approaches provides a strategy to create efficient, stable, and bright LECs, which use advantages of both LED and LEC operation. It is discussed that how the LEC behavior in perovskite LEDs can be further improved to address the long‐term challenges in perovskite optoelectronics, such as stability, through approaches like ionically reconfigurable host/guest systems.