2D MXene Additive-Induced Treatment Enabling High-Efficiency Indoor Organic Photovoltaics

Saeed, Muhammad AhsanKorea Univ, Sch Elect Engn, Seoul 02841, South Korea. (author)

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.

Kim, Tae HyukKorea Univ, Sch Elect Engn, Seoul 02841, South Korea. (author)
Ahn, HyungjuPOSTECH, Pohang Accelerator Lab, Pohang 37673, South Korea. (author)
Park, Na WonEwha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea. (author)
Park, JaeHongEwha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea. (author)
Choi, HyosungHanyang Univ, Dept Chem, Seoul 04763, South Korea.;Hanyang Univ, Res Inst Convergence Basic Sci, Seoul 04763, South Korea. (author)
Shahzad, AsifUppsala universitet,Fasta tillståndets fysik(Swepub:uu)asish220 (author)
Shim, Jae WonKorea Univ, Sch Elect Engn, Seoul 02841, South Korea. (author)
Korea Univ, Sch Elect Engn, Seoul 02841, South Korea.POSTECH, Pohang Accelerator Lab, Pohang 37673, South Korea. (creator_code:org_t)

In:Advanced Optical Materials: Wiley-VCH Verlagsgesellschaft11:12162-75682195-1071

By the author/editor: Saeed, Muhammad ...; Kim, Tae Hyuk; Ahn, Hyungju; Park, Na Won; Park, JaeHong; Choi, Hyosung; show more...; Shahzad, Asif; Shim, Jae Won; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Materials Chemis ...

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