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Addition of 2D Ti 3 C 2 T x to Enhance Photocurrent in Diodes for High‐Efficiency Organic Solar Cells
Author(s) -
Zhao Yong,
Liu Xiaojie,
Jing Xin,
Wang Xiangkun,
Gao Caiyun,
Dai Shuixing,
Yu Liangmin,
Sun Mingliang
Publication year - 2021
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.202100127
Subject(s) - photocurrent , materials science , energy conversion efficiency , organic solar cell , diode , photoactive layer , active layer , optoelectronics , short circuit , photovoltaic system , current density , dissociation (chemistry) , charge carrier , polymer solar cell , layer (electronics) , nanotechnology , voltage , chemistry , polymer , ecology , thin film transistor , physics , quantum mechanics , composite material , biology
Solution‐processed 2D Ti 3 C 2 T x nanosheets are incorporated into the active layer of organic solar cells (OSCs) as a third component to obtain an enhancement of the photovoltaic device performance. The power conversion efficiency (PCE) of the devices is boosted from 9.34% to 10.72% for the PBDB‐T:ITIC blend and from 14.64% to 16.25% for the PM6:Y6 blend after adding 2D Ti 3 C 2 T x nanosheets. The light scattering of the 2D flakes in Ti 3 C 2 T x nanosheets not only increases the short‐circuit current density ( J SC ) but also improves the carrier dissociation and transfer efficiency in devices, thus leading to reduced bimolecular recombination. Furthermore, Ti 3 C 2 T x with appropriate content has little effect on the interpenetrating network morphology and instead provides an additional pathway for charge transport in photoactive layers. Herein, a potential direction for the application of 2D Ti 3 C 2 T x materials in the field of OSCs is provided.