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Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells
Zhi, Ying1; Xu, Yanzi1; Bao, Xichang3; Yang, Renqiang3; Zhu, Weiguo2; Dang, Dongfeng1; Meng, Lingjie1; Cao, Ruijun1
Source PublicationDYES AND PIGMENTS
AbstractTo release the steric-strain in largely fused molecular backbone and achieve the much planar molecules for efficient organic solar cells, a facile method was proposed by dividing the rigidly fused dibenzo-sexithiophene (DBST) units in FT3 with large molecular skeletons to two smaller building blocks to construct the electron donor-acceptor type compound FT4. As observed, much improved molecular co-planarity was achieved for FT4 in contrast to that of FT3, then leading to the higher charge carrier mobilities up to 6.7 x 10(-4) cm(2)V(-1)s(-1) by SCLC method. Meanwhile, FT4-based BHJ solar cells also exhibited much enhanced photovoltaic performance with the maximum PCE value of 3.07% and higher Jsc value of 8.23 mA/cm(2), which is only 2.13% and 5.67 mA/cm(2) for FT3-based solar cells. The results here indicated that the strain-released method, especially in the highly fused molecules, is beneficial to further improve their co-planarity, then leading to the high charge carrier mobilities and much enhanced photovoltaic performance in solar cells. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordOrganic Solar Cells Steric-strain Release Molecular Co-planarity Fused Thiophene Rings Electron Donor-acceptor
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS Research AreaChemistry ; Engineering ; Materials Science
Funding OrganizationNational Natural Science Foundation of China(51603165) ; Foundation of Xi'an Jiao Tong University for New Teachers(HX1K008) ; China Post-doctoral Science Foundation Funded Project(2015M582648 ; Fundamental Research Funds for the Central Universities of China(xjj2016069) ; Natural Science Basic Research Plan in Shaanxi Province of China(2016JQ5029) ; Postdoctoral Project in Shaanxi Province ; 2016790901)
WOS SubjectChemistry, Applied ; Engineering, Chemical ; Materials Science, Textiles
WOS IDWOS:000405972900030
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Document Type期刊论文
Affiliation1.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Shaanxi, Peoples R China
2.Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Zhi, Ying,Xu, Yanzi,Bao, Xichang,et al. Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells[J]. DYES AND PIGMENTS,2017,145:263-269.
APA Zhi, Ying.,Xu, Yanzi.,Bao, Xichang.,Yang, Renqiang.,Zhu, Weiguo.,...&Cao, Ruijun.(2017).Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells.DYES AND PIGMENTS,145,263-269.
MLA Zhi, Ying,et al."Strain-released method to enhance the photovoltaic performance in solution-processed organic solar cells".DYES AND PIGMENTS 145(2017):263-269.
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