ICCAS OpenIR
Improving the efficiency of solution processable organic photovoltaic devices by a star-shaped molecular geometry
He, Chang2; He, Qingguo1; Yi, Yuanping2; Wu, Guanglong2; Bai, Fenglian2; Shuai, Zhigang2; Li, Yongfang2
2008
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume18Issue:34Pages:4085-4090
AbstractA new solution processable star-shaped organic molecule S(TPA-BT) has been synthesized for application in organic solar cells (OSCs). The properties and structures of S(TPA-BT) and a related linear molecule L(TPA-BT) were studied, including UV-visible spectroscopy, hole charge mobility, and theoretical calculated geometry and electronic properties. S(TPA-BT) film shows a broader and stronger absorption band in the range of 440-670 nm, lower band gap of 1.86 eV, higher hole mobility of 4.71 x 10(-5) cm(2)V(-1) s(-1) and better film-forming properties compared with those of L(TPA-BT) film. ITO/PEDOT:PSS/S(TPA-BT) or L(TPA-BT): PCBM/Ba/Al bulk-heterojunction OSCs were fabricated with S(TPA-BT) or L(TPA-BT) as donor material. The power conversion efficiency (PCE) of an OSC based on a blend of S(TPA-BT) and PCBM (1 : 3, w/w) reached 1.33% under A. M. 1.5 illumination, 100 mW cm(-2), with a short-circuit current density (J(SC)) of 4.18 mA cm(-2), an open circuit voltage of 0.81 V, and a fill factor of 39%. The PCE of 1.33% and J(sc) of 4.18 mA cm(-2) are among the highest values reported so far for solution processable OSCs.
DOI10.1039/b807456a
Indexed BySCI
Language英语
WOS IDWOS:000258737900013
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:152[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65090
Collection中国科学院化学研究所
Corresponding AuthorHe, Qingguo
Affiliation1.Chinese Acad Sci, Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
He, Chang,He, Qingguo,Yi, Yuanping,et al. Improving the efficiency of solution processable organic photovoltaic devices by a star-shaped molecular geometry[J]. JOURNAL OF MATERIALS CHEMISTRY,2008,18(34):4085-4090.
APA He, Chang.,He, Qingguo.,Yi, Yuanping.,Wu, Guanglong.,Bai, Fenglian.,...&Li, Yongfang.(2008).Improving the efficiency of solution processable organic photovoltaic devices by a star-shaped molecular geometry.JOURNAL OF MATERIALS CHEMISTRY,18(34),4085-4090.
MLA He, Chang,et al."Improving the efficiency of solution processable organic photovoltaic devices by a star-shaped molecular geometry".JOURNAL OF MATERIALS CHEMISTRY 18.34(2008):4085-4090.
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