{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["He B"],"funding":["Educational Commission of Guangdong Province","Natural Science Foundation of Hunan Province"],"pagination":["21397-21404"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9034166"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["11(35)"],"pubmed_abstract":["A wide-bandgap polymer donor with improved efficiency plays an important role in improving the photovoltaic performance of polymer solar cells (PSCs). In this study, two novel wide-bandgap polymer donors, PBDT and PBDT-S, were designed and synthesized based on a dicyanodivinyl indacenodithiophene (IDT-CN) moiety, in which benzo[1,2-<i>b</i>:4,5-<i>b</i>']dithiophene (BDT) building blocks and IDT-CN are used as electron-sufficient and -deficient units, respectively. In our study, the PBDT and PBDT-S polymer donors exhibited similar frontier-molecular-orbital energy levels and optical properties, and both copolymers showed good miscibility with the widely used narrow-bandgap small molecular acceptor Y6. Non-fullerene polymer solar cells (NF-PSCs) based on PBDT:Y6 exhibited an impressive power conversion efficiency of 10.04% with an open circuit voltage of 0.88 V, a short-circuit current density of 22.16 mA cm<sup>-2</sup> and a fill factor of 51.31%, where the NF-PSCs based on PBDT-S:Y6 exhibited a moderate power conversion efficiency of 6.90%. The enhanced photovoltaic performance, realized by virtue of the improved short-circuit current density, can be attributed to the slightly enhanced electron mobility, higher exciton dissociation rates, more efficient charge collection and better nanoscale phase separation of the PBDT-based device. The results of this work indicate that the IDT-CN unit is a promising building block for constructing donor polymers for high-performance organic photovoltaic cells."],"journal":["RSC advances"],"pubmed_title":["Wide-bandgap donor polymers based on a dicyanodivinyl indacenodithiophene unit for non-fullerene polymer solar cells."],"pmcid":["PMC9034166"],"funding_grant_id":["2019GCZX010","2020JJ5544"],"pubmed_authors":["Xiao M","Dai C","Chen J","Chen G","Chen Y","Chen S","He B"],"additional_accession":[]},"is_claimable":false,"name":"Wide-bandgap donor polymers based on a dicyanodivinyl indacenodithiophene unit for non-fullerene polymer solar cells.","description":"A wide-bandgap polymer donor with improved efficiency plays an important role in improving the photovoltaic performance of polymer solar cells (PSCs). In this study, two novel wide-bandgap polymer donors, PBDT and PBDT-S, were designed and synthesized based on a dicyanodivinyl indacenodithiophene (IDT-CN) moiety, in which benzo[1,2-<i>b</i>:4,5-<i>b</i>']dithiophene (BDT) building blocks and IDT-CN are used as electron-sufficient and -deficient units, respectively. In our study, the PBDT and PBDT-S polymer donors exhibited similar frontier-molecular-orbital energy levels and optical properties, and both copolymers showed good miscibility with the widely used narrow-bandgap small molecular acceptor Y6. Non-fullerene polymer solar cells (NF-PSCs) based on PBDT:Y6 exhibited an impressive power conversion efficiency of 10.04% with an open circuit voltage of 0.88 V, a short-circuit current density of 22.16 mA cm<sup>-2</sup> and a fill factor of 51.31%, where the NF-PSCs based on PBDT-S:Y6 exhibited a moderate power conversion efficiency of 6.90%. The enhanced photovoltaic performance, realized by virtue of the improved short-circuit current density, can be attributed to the slightly enhanced electron mobility, higher exciton dissociation rates, more efficient charge collection and better nanoscale phase separation of the PBDT-based device. The results of this work indicate that the IDT-CN unit is a promising building block for constructing donor polymers for high-performance organic photovoltaic cells.","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Jun","modification":"2025-04-25T22:56:01.373Z","creation":"2025-04-06T09:14:05.628Z"},"accession":"S-EPMC9034166","cross_references":{"pubmed":["35478821"],"doi":["10.1039/d1ra03233j"]}}