Indacenodithienothiophene-naphthalene diimide copolymer as an acceptor for all-polymer solar cells

被引:67
作者
Xue, Lingwei [1 ,2 ]
Yang, Yankang [2 ,3 ]
Zhang, Zhi-Guo [2 ]
Dong, Xinning [2 ]
Gao, Liang [2 ,3 ]
Bin, Haijun [2 ,3 ]
Zhang, Jing [2 ]
Yang, YunXu [1 ]
Li, Yongfang [2 ,3 ,4 ]
机构
[1] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Dept Chem & Chem Engn, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Jiangsu, Peoples R China
关键词
POWER CONVERSION EFFICIENCY; FIELD-EFFECT TRANSISTORS; CONJUGATED POLYMERS; ELECTRON-ACCEPTORS; PHOTOVOLTAIC CELLS; MOLECULAR-WEIGHT; AGGREGATION; DONOR; ABSORPTION; PERYLENE;
D O I
10.1039/c6ta01933a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An alternating copolymer (P(IDT-NDI)) containing indacenodithienothiophene (IDT) and naphthalene diimide (NDI) units was synthesized for application as an acceptor material in all-polymer solar cells (all-PSCs). The polymer possesses a low bandgap of 1.51 eV, a suitable LUMO level of -3.84 eV and a HOMO level of -5.75 eV for use as an acceptor material instead of PCBM. Three conjugated polymers including J50 and J51 with a medium bandgap (ca. 1.9 eV) and PTB7-Th with a low bandgap (1.59 eV) were selected as donor materials for the investigation of the photovoltaic performance of the nonfullerene acceptor P(IDT-NDI). The champion all-PSCs with P(IDT-NDI) as an acceptor demonstrated power conversion efficiencies of 3.63%, 4.12% and 5.33% for the polymer donors PTB7-Th, J50 and J51, respectively. The results indicate that the complementary absorption of the polymer donor with polymer acceptor is very important for high performance all-PSCs and P(IDT-NDI) is a promising polymer acceptor for all-PSCs.
引用
收藏
页码:5810 / 5816
页数:7
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