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자연과학대학
화학·나노과학전공
Journal papers
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2D MXene Additive-Induced Treatment Enabling High-Efficiency Indoor Organic Photovoltaics
Title
2D MXene Additive-Induced Treatment Enabling High-Efficiency Indoor Organic Photovoltaics
Authors
Saeed M.A.
;
Kim T.H.
;
Ahn H.
;
Park N.W.
;
Park J.
;
Choi H.
;
Shahzad A.
;
Shim J.W.
Ewha Authors
박재홍
SCOPUS Author ID
박재홍
Issue Date
2023
Journal Title
Advanced Optical Materials
ISSN
2195-1071
Citation
Advanced Optical Materials vol. 11, no. 1
Keywords
additive engineering
;
high efficiency
;
indoor organic photovoltaics
;
photoactive layer doping
;
titanium-carbide MXenes
Publisher
John Wiley and Sons Inc
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
The surge of Internet-of-everything applications over the past decade demands the adoption of novel material design and device engineering strategies for the development of state-of-the-art organic photovoltaics (OPVs) in low-light indoor environments. Owing to their excellent optoelectronic properties, two-dimensional MXenes possess outstanding potential in this regard. Herein, an unprecedented indoor power conversion efficiency (PCE) of 33.8% under light-emitting-diode (LED) illumination (1000-lx) is secured by additive-induced treatment of MXene in polymer-donor:non-fullerene-acceptor-based organic photoactive layer. The remarkable indoor performance of MXene OPVs mainly originates from the enhanced absorption, compact molecular packing, and smooth surface morphology with a reduced number of grain boundaries in the photoactive layer, resulting in an improved fill factor and balanced charge transport and extraction characteristics with suppressed recombination, thereby producing an impressive indoor PCE. In addition, the presence of MXene in the photoactive layer facilitates polaron-pair dissociation owing to improved free-charge generation, leading to enhanced photoconductivity. This performance represents the highest PCE among the OPVs measured under indoor illumination. This work highlights the promising prospect of 2D MXene and its composites for indoor light energy harvesting applications. © 2022 Wiley-VCH GmbH.
DOI
10.1002/adom.202202135
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