Synthesis and photovoltaic behaviors of benzothiadiazole- and triphenylamine-based alternating copolymers
摘要:
A series of donor-acceptor (D-A) alternating copolymers (P1, P2 and P3) with thiophene -benzothiadiazole-thiophene-triphenylamine main chain have been synthesized by Suzuki poly-condensation. P1, P2, and P3 possess medium optical band gaps of 1.99, 1.97 and 1.93 eV, respectively. Bulk heterojunction polymer solar cells (BHJ PSCs) with these polymers as donor and PC71BM as acceptor showed power conversion efficiency (PCE) in the range of 2.1-2.8%. The highest PCE of 2.8 % was achieved for P1 with short circuit current (J(SC),) of 7.8 mA/cm(2). This study offers a useful and important insight for designing triphenylamine derivative-based polymers used for efficient PSCs. (C) 2011 Elsevier Ltd. All rights reserved.
Feasible energy level tuning in polymer solar cells based on broad band-gap polytriphenylamine derivatives
作者:Bin Zhang、Guiting Chen、Jin Xu、Liwen Hu、Wei Yang
DOI:10.1039/c5nj02124c
日期:——
Four triphenylamine based broad band-gap polymers with different substituted groups [–OC8H17, –C8H17, –CF3, –(CF3)2] were designed and synthesized, and the HOMO energy levels and Vocs of these polymer based PSCs could be tuned feasibly.