{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Jia Z"],"funding":["National Natural Science Foundation of China","National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["1236"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9985646"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(1)"],"pubmed_abstract":["Reducing the energy loss of sub-cells is critical for high performance tandem organic solar cells, while it is limited by the severe non-radiative voltage loss via the formation of non-emissive triplet excitons. Herein, we develop an ultra-narrow bandgap acceptor BTPSeV-4F through replacement of terminal thiophene by selenophene in the central fused ring of BTPSV-4F, for constructing efficient tandem organic solar cells. The selenophene substitution further decrease the optical bandgap of BTPSV-4F to 1.17 eV and suppress the formation of triplet exciton in the BTPSV-4F-based devices. The organic solar cells with BTPSeV-4F as acceptor demonstrate a higher power conversion efficiency of 14.2% with a record high short-circuit current density of 30.1 mA cm<sup>-2</sup> and low energy loss of 0.55 eV benefitted from the low non-radiative energy loss due to the suppression of triplet exciton formation. We also develop a high-performance medium bandgap acceptor O1-Br for front cells. By integrating the PM6:O1-Br based front cells with the PTB7-Th:BTPSeV-4F based rear cells, the tandem organic solar cell demonstrates a power conversion efficiency of 19%. The results indicate that the suppression of triplet excitons formation in the near-infrared-absorbing acceptor by molecular design is an effective way to improve the photovoltaic performance of the tandem organic solar cells."],"journal":["Nature communications"],"pubmed_title":["Near-infrared absorbing acceptor with suppressed triplet exciton generation enabling high performance tandem organic solar cells."],"pmcid":["PMC9985646"],"funding_grant_id":["51820105003"],"pubmed_authors":["Ma Q","Jain N","Ade H","Zhu H","Gao F","Qin S","Li X","Li Y","Chen Z","Angunawela I","Meng L","Yang YM","Kong X","Jia Z"],"additional_accession":[]},"is_claimable":false,"name":"Near-infrared absorbing acceptor with suppressed triplet exciton generation enabling high performance tandem organic solar cells.","description":"Reducing the energy loss of sub-cells is critical for high performance tandem organic solar cells, while it is limited by the severe non-radiative voltage loss via the formation of non-emissive triplet excitons. Herein, we develop an ultra-narrow bandgap acceptor BTPSeV-4F through replacement of terminal thiophene by selenophene in the central fused ring of BTPSV-4F, for constructing efficient tandem organic solar cells. The selenophene substitution further decrease the optical bandgap of BTPSV-4F to 1.17 eV and suppress the formation of triplet exciton in the BTPSV-4F-based devices. The organic solar cells with BTPSeV-4F as acceptor demonstrate a higher power conversion efficiency of 14.2% with a record high short-circuit current density of 30.1 mA cm<sup>-2</sup> and low energy loss of 0.55 eV benefitted from the low non-radiative energy loss due to the suppression of triplet exciton formation. We also develop a high-performance medium bandgap acceptor O1-Br for front cells. By integrating the PM6:O1-Br based front cells with the PTB7-Th:BTPSeV-4F based rear cells, the tandem organic solar cell demonstrates a power conversion efficiency of 19%. The results indicate that the suppression of triplet excitons formation in the near-infrared-absorbing acceptor by molecular design is an effective way to improve the photovoltaic performance of the tandem organic solar cells.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Mar","modification":"2025-05-29T22:03:08.65Z","creation":"2025-05-29T22:03:08.65Z"},"accession":"S-EPMC9985646","cross_references":{"pubmed":["36871067"],"doi":["10.1038/s41467-023-36917-y"]}}