ICCAS OpenIR
Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance
Yue, Wei1,2; Zhao, Yun1,2; Shao, Shuyan1,2; Tian, Hongkun1; Xie, Zhiyuan1; Geng, Yanhou1; Wang, Fosong1
2009
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume19Issue:15Pages:2199-2206
AbstractThree low bandgap conjugated polymers, i.e., PDTPBT-C8, PDTPBT-C6 and PDTPBT-C5, which consist of alternating N-alkyl dithieno[3,2-b: 2',3'-d] pyrrole and 2,1,3-benzothiadiazole units and carry 1-octylnonyl, 1-hexylheptyl and 1-pentylhexyl as side chains, respectively, were synthesized. These polymers show strong absorption in the wavelength range of 600-900 nm with enhanced absorption coefficient as the length of alkyl chain decreases. The film morphology of the polymers and 1-(3-methoxycarbonyl) propyl-1-phenyl-[6,6]-C-61 (PCBM) blends is also dependent on the alkyl chain length. As the length decreases, the film becomes more uniform and the domian size decreases from 400-900 nm for PDTPBT-C8 to similar to 50 nm for PDTPBT-C5. Bulk heterojunction photovoltaic solar cells (PSCs) were fabricated based on the blend of the polymers and PCBM with a weight ratio of 1: 3. The device performance is dramatically improved as the length of the side chain decreases, due to enhanced film absorption coefficient and improved film morphology. With the polymer PDTPBT-C5, which carries the shortest alkyl chain, power conversion efficiency (PCE) up to 2.80% has been achieved. This result indicates that optimizing the structure of the solublizing alkyl chain is also crucial for the design and synthesis of high performance PSC polymeric materials.
DOI10.1039/b818885h
Indexed BySCI
Language英语
WOS IDWOS:000264745300016
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:161[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68614
Collection中国科学院化学研究所
Corresponding AuthorXie, Zhiyuan
Affiliation1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yue, Wei,Zhao, Yun,Shao, Shuyan,et al. Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(15):2199-2206.
APA Yue, Wei.,Zhao, Yun.,Shao, Shuyan.,Tian, Hongkun.,Xie, Zhiyuan.,...&Wang, Fosong.(2009).Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance.JOURNAL OF MATERIALS CHEMISTRY,19(15),2199-2206.
MLA Yue, Wei,et al."Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance".JOURNAL OF MATERIALS CHEMISTRY 19.15(2009):2199-2206.
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