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High Efficiency Nonfullerene Polymer Solar Cells with Thick Active Layer and Large Area
Author(s) -
Guo Bing,
Li Wanbin,
Guo Xia,
Meng Xiangyi,
Ma Wei,
Zhang Maojie,
Li Yongfang
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201702291
Subject(s) - materials science , active layer , energy conversion efficiency , optoelectronics , polymer solar cell , acceptor , band gap , annealing (glass) , planar , polymer , fabrication , organic solar cell , fullerene , open circuit voltage , short circuit , layer (electronics) , nanotechnology , voltage , composite material , electrical engineering , computer graphics (images) , alternative medicine , chemistry , pathology , computer science , engineering , condensed matter physics , medicine , physics , organic chemistry , thin film transistor
In this work, high‐efficiency nonfullerene polymer solar cells (PSCs) are developed based on a thiazolothiazole‐containing wide bandgap polymer PTZ1 as donor and a planar IDT‐based narrow bandgap small molecule with four side chains (IDIC) as acceptor. Through thermal annealing treatment, a power conversion efficiency (PCE) of up to 11.5% with an open circuit voltage ( V oc ) of 0.92 V, a short‐circuit current density ( J sc ) of 16.4 mA cm −2 , and a fill factor of 76.2% is achieved. Furthermore, the PSCs based on PTZ1:IDIC still exhibit a relatively high PCE of 9.6% with the active layer thickness of 210 nm and a superior PCE of 10.5% with the device area of up to 0.81 cm 2 . These results indicate that PTZ1 is a promising polymer donor material for highly efficient fullerene‐free PSCs and large‐scale devices fabrication.