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Synthesis and Photovoltaic Properties of D-A Copolymers Based on Alkyl-Substituted Indacenodithiophene Donor Unit
Zhang, Maojie1,3; Guo, Xia1,3; Wang, Xiaochen2; Wang, Haiqiao2; Li, Yongfang1
2011-09-27
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
Volume23Issue:18Pages:4264-4270
AbstractFour D-A copolymers of tetradodecyl-substituted indacenodithiophene (IDT) donor unit with different acceptor units including bis(thiophen-2-yl)-bithiazole (BT2), bis(thiophen-2-yl)thiazolothiazole (TTz), bis(thiophen-2-yl)-tetrazine (TZ), and bis(thiophen-2-yl)-benzothiadiazole (DTBT), PIDT-BTz, PIDT-TTz, PIDT-TZ, and PIDT-DTBT, were synthesized for the application as donor materials in polymer solar cells (PSCs). The copolymers possess good solubility benefitted from the four alkyl side chains on IDT unit, deeper HOMO levels at ca. -5.2 eV thanks to the IDT unit and tunable bandgap depending on the acceptor units. Among the copolymers, PIDT-TTz has the highest hole mobility (mu(h)) of 4.99 x 10(-3) cm(2)/V s. The power conversion efficiency (PCE) of the PSC based on PIDT-TTz/PC70BM (1:2 w/w) reached 5.79%, under the illumination of AM1.5G, 100 mW/cm(2). PIDT-DTBT film has the smallest bandgap of 1.68 eV and a higher mu(h) of 2.24 x 10(-3) cm(2)/V s. The PSC based on PIDT-DTBT/PC70BM (1:3 w/w) exhibited an even higher PCE of 6.17% with a J(sc) of 13.27 mA/cm(2), a V., of 0.82 V-oc and a FF of 56.9%.
DOI10.1021/cm2019586
Indexed BySCI
Language英语
WOS IDWOS:000295058600026
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71882
Collection中国科学院化学研究所
Corresponding AuthorLi, Yongfang
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Key Lab Adv Proc & Preparat Tech Nanomat, Minist Educ, Coll Mat Sci & Engn, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Maojie,Guo, Xia,Wang, Xiaochen,et al. Synthesis and Photovoltaic Properties of D-A Copolymers Based on Alkyl-Substituted Indacenodithiophene Donor Unit[J]. CHEMISTRY OF MATERIALS,2011,23(18):4264-4270.
APA Zhang, Maojie,Guo, Xia,Wang, Xiaochen,Wang, Haiqiao,&Li, Yongfang.(2011).Synthesis and Photovoltaic Properties of D-A Copolymers Based on Alkyl-Substituted Indacenodithiophene Donor Unit.CHEMISTRY OF MATERIALS,23(18),4264-4270.
MLA Zhang, Maojie,et al."Synthesis and Photovoltaic Properties of D-A Copolymers Based on Alkyl-Substituted Indacenodithiophene Donor Unit".CHEMISTRY OF MATERIALS 23.18(2011):4264-4270.
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