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Enhancing the photovoltaic properties of terpolymers containing benzo[1,2-b:4,5-b ']-dithiophene, phenanthro[4,5-abc]phenazine and benzo[c][1,2,5]thiadiazole by changing the substituents
Fan, Qunping1; Liu, Yu1; Xiao, Manjun1; Su, Wenyan1; Gao, Huishan1; Chen, Jianhua1; Tan, Hua1; Wang, Yafei1; Yang, Renqiang2; Zhu, Weiguo1
2015
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
Volume3Issue:24Pages:6240-6248
Abstract

In this study, three novel donor-acceptor (D-A)-type random conjugated terpolymers of PBDTT-PPzBT-H, PBDTT-PPzBT-F and PBDTT-PPzBT-O were synthesized by copolymerizing electron-rich 5,8-dialkylthienyl substituted benzo[1,2-b: 4,5-b']dithiophene (BDTT) and two electron-deficient phenanthro[4,5-abc]phenazine (PPz) and benzo[c][1,2,5]thiadiazole (BT) units. By changing the substituents at the 5,6-positions of BT, the optoelectronic properties of the terpolymers could be rationally adjusted for application as donor materials in polymer solar cells (PSCs). As a result, these terpolymers exhibited different light absorption properties, HOMO energy levels and hole mobilities, which contributed to the optimization of short-circuit current (J(sc)), open-circuit voltage (V-oc) and fill factor (FF) properties, respectively. Interestingly, a maximum power conversion efficiency (PCE) of 6.3% was obtained with an V-oc of 0.75 V, a J(sc) of 13.0 mA cm(-2) and a FF of 64.8% in the PBDTT-PPzBT-O based PSCs using [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as an acceptor, while PBDTT-PPzBT-H and PBDTT-PPzBT-F based devices also demonstrated a PCE of more than 4.5%. To the best of our knowledge, these are the highest recorded maximum PCE, J(sc) and FF values obtained to date compared with previously reported phenazine copolymeric derivatives in BHJ-PSCs. This study illustrates the potential of these random conjugated terpolymers as promising donor materials in the application of PSCs.

SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1039/c5tc00785b
WOS KeywordPOLYMER SOLAR-CELLS ; OPEN-CIRCUIT VOLTAGE ; POWER CONVERSION EFFICIENCY ; DONOR-ACCEPTOR POLYMERS ; CONJUGATED POLYMERS ; SIDE-CHAIN ; MOLECULAR DESIGN ; PERFORMANCE ; COPOLYMERS ; BENZODITHIOPHENE
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000356307800016
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/6462
Collection先进有机功能材料研究组
Affiliation1.Xiangtan Univ, Coll Chem, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Fan, Qunping,Liu, Yu,Xiao, Manjun,et al. Enhancing the photovoltaic properties of terpolymers containing benzo[1,2-b:4,5-b ']-dithiophene, phenanthro[4,5-abc]phenazine and benzo[c][1,2,5]thiadiazole by changing the substituents[J]. JOURNAL OF MATERIALS CHEMISTRY C,2015,3(24):6240-6248.
APA Fan, Qunping.,Liu, Yu.,Xiao, Manjun.,Su, Wenyan.,Gao, Huishan.,...&Zhu, Weiguo.(2015).Enhancing the photovoltaic properties of terpolymers containing benzo[1,2-b:4,5-b ']-dithiophene, phenanthro[4,5-abc]phenazine and benzo[c][1,2,5]thiadiazole by changing the substituents.JOURNAL OF MATERIALS CHEMISTRY C,3(24),6240-6248.
MLA Fan, Qunping,et al."Enhancing the photovoltaic properties of terpolymers containing benzo[1,2-b:4,5-b ']-dithiophene, phenanthro[4,5-abc]phenazine and benzo[c][1,2,5]thiadiazole by changing the substituents".JOURNAL OF MATERIALS CHEMISTRY C 3.24(2015):6240-6248.
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