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dc.contributor.authorBudiawan, Widhyaen_US
dc.contributor.authorLai, Kuan-Wenen_US
dc.contributor.authorKaruppuswamy, Priyadharsinien_US
dc.contributor.authorJadhav, Tushar Sanjayen_US
dc.contributor.authorLu, Yen-Anen_US
dc.contributor.authorHo, Kuo-Chuanen_US
dc.contributor.authorWang, Pen-Chengen_US
dc.contributor.authorChang, Chien-Chenen_US
dc.contributor.authorChu, Chih-Weien_US
dc.date.accessioned2020-10-05T01:59:43Z-
dc.date.available2020-10-05T01:59:43Z-
dc.date.issued2020-07-01en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsami.0c02204en_US
dc.identifier.urihttp://hdl.handle.net/11536/154857-
dc.description.abstractIn this study, we synthesized a series of small-molecule benzotrithiophenes (BTTs) and used them as hole transporting materials (HTMs) in perovskite solar cells (PSCs). The asymmetric benzo[2,1-b:-3,4-b':5,6-b"]trithiophene unit was used as the central core to which were appended various donor groups, namely, carbazole (BTT-CB), thieno thiophene (BTT-FT), triphenylamine (BTT-TPA), and bithiophene (BTT-TT). The extended aromatic core in the asymmetric BTT provided full planarity, thereby favoring intermolecular pi-stacking and charge transport. The physical, optical, and electrical properties of these small-molecule HTMs are reported herein. BTT-TT displayed good crystallinity and superior hole mobility, when compared with those of the other three HTMs, and formed smooth and uniform surfaces when covering the perovskite active layer. Accordingly, among the devices prepared in this study, a PSC incorporating BTT-TT as the HTM achieved the highest power conversion efficiency (18.58%). Moreover, this BTT-TT-containing device exhibited good stability after storage for more than 700 h. Thus, asymmetric BTTs are promising candidate materials for use as small-molecule HTMs in PSCs.en_US
dc.language.isoen_USen_US
dc.subjectperovskite solar cellen_US
dc.subjecthole transporting materialen_US
dc.subjectsmall moleculesen_US
dc.subjectasymmetric benzotrithiophenesen_US
dc.subjectcharge transporten_US
dc.titleAsymmetric Benzotrithiophene-Based Hole Transporting Materials Provide High-Efficiency Perovskite Solar Cellsen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsami.0c02204en_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.volume12en_US
dc.citation.issue26en_US
dc.citation.spage29143en_US
dc.citation.epage29152en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000546698600022en_US
dc.citation.woscount0en_US
Appears in Collections:Articles