Full metadata record
DC FieldValueLanguage
dc.contributor.authorChen, Tsung-Weien_US
dc.contributor.authorHsiao, Yu-Tangen_US
dc.contributor.authorLin, You-Weien_US
dc.contributor.authorChang, Chia-Chihen_US
dc.contributor.authorChuang, Wei-Tsungen_US
dc.contributor.authorLi, Yongfangen_US
dc.contributor.authorHsu, Chain-Shuen_US
dc.date.accessioned2020-02-02T23:54:37Z-
dc.date.available2020-02-02T23:54:37Z-
dc.date.issued2019-05-01en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c9qm00005den_US
dc.identifier.urihttp://hdl.handle.net/11536/153574-
dc.description.abstractMolecular engineering of non-fullerene acceptors (NFAs) is a promising strategy to uncover new structure-property relationships and design principles for developing next-generation high performance n-type materials. Two dithienocyclopentacarbazole (DTC)-based NFAs, DTC(4R)-IC and DTC(4R)-4FIC, are synthesized to elucidate the effects of incorporating aliphatic side chains and 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (2FIC) end groups on the thermal and optoelectronic properties of these NFAs. An inverted organic solar cell architecture of ITO/ZnO/J71:NFA/MoO3/Ag is employed. By replacing the phenyl-based side chains with aliphatic side chains on the carbon bridges of the carbazole-based core, the device containing DTC(4R)-IC exhibits an enhanced PCE of 9.61%, a V-OC of 0.94 V, a J(SC) of 16.44 mA cm(-2), and a FF of 62.00%, whereas the device containing DTC(4Ph)-IC exhibits a PCE of 7.76%. The incorporation of 2FIC end groups affords DTC(4R)-4FIC featuring better device performance relative to DTC(4R)-IC, a more red-shifted absorption edge, and a broader absorption range upon fluorination. Notably, the device fabricated with DTC(4R)-4FIC affords a V-oc of 0.82 V, a J(sc) of 18.92 mA cm(-2), a FF of 70.22% and a highest PCE of 10.89%, which is by far the highest PCE for NFA containing heptacyclic carbazole cores.en_US
dc.language.isoen_USen_US
dc.titleFluorinated heptacyclic carbazole-based ladder-type acceptors with aliphatic side chains for efficient fullerene-free organic solar cellsen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c9qm00005den_US
dc.identifier.journalMATERIALS CHEMISTRY FRONTIERSen_US
dc.citation.volume3en_US
dc.citation.issue5en_US
dc.citation.spage829en_US
dc.citation.epage835en_US
dc.contributor.department交大名義發表zh_TW
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentNational Chiao Tung Universityen_US
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000466945800008en_US
dc.citation.woscount3en_US
Appears in Collections:Articles