title: Hole-Transporting Materials Based on Twisted Bimesitylenes for Stable Perovskite Solar Cells with High Efficiency.
abstract: A new class of hole-transport materials (HTMs) based on the bimesitylene core designed for mesoporous perovskite solar cells is introduced. Devices fabricated using two of these derivatives yield higher open-circuit voltage values than the commonly used spiro-OMeTAD. Power conversion efficiency (PCE) values of up to 12.11% are obtained in perovskite-based devices using these new HTMs. The stability of the device made using the highest performing HTM (P1) is improved compared with spiro-OMeTAD as evidenced through long-term stability tests over 1000 h.
authors.affiliation: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.
authors.forename: Yan-Duo
authors.initials: YD
authors.lastname: Lin
authors.affiliation: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.
authors.forename: Bo-Yu
authors.initials: BY
authors.lastname: Ke
authors.affiliation: Research Center for New Generation Photovoltaics, National Central University, Chung-Li, 320, Taiwan.|Department of Chemical and Material Engineering, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Kun-Mu
authors.initials: KM
authors.lastname: Lee
authors.affiliation: Research Center for New Generation Photovoltaics, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Sheng Hsiung
authors.initials: SH
authors.lastname: Chang
authors.affiliation: Department of Chemical and Material Engineering, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Kai-Hung
authors.initials: KH
authors.lastname: Wang
authors.affiliation: Department of Chemical and Material Engineering, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Shih-Han
authors.initials: SH
authors.lastname: Huang
authors.affiliation: Research Center for New Generation Photovoltaics, National Central University, Chung-Li, 320, Taiwan.|Department of Chemistry, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Chun-Guey
authors.initials: CG
authors.lastname: Wu
authors.affiliation: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.
authors.forename: Po-Ting
authors.initials: PT
authors.lastname: Chou
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kanpur, 208 016, India.
authors.forename: Samik
authors.initials: S
authors.lastname: Jhulki
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kanpur, 208 016, India.
authors.forename: Jarugu Narasimha
authors.initials: JN
authors.lastname: Moorthy
authors.affiliation: Department of Chemistry, Tung Hai University, Taichung, 407, Taiwan.
authors.forename: Yuan Jay
authors.initials: YJ
authors.lastname: Chang
authors.affiliation: Department of Chemistry, National Central University, Chung-Li, 320, Taiwan.
authors.forename: Kang-Ling
authors.initials: KL
authors.lastname: Liau
authors.affiliation: Department of Applied Chemistry, Chinese Culture University, Taipei, 111, Taiwan.
authors.forename: Hsin-Cheng
authors.initials: HC
authors.lastname: Chung
authors.affiliation: Department of Applied Chemistry, Chinese Culture University, Taipei, 111, Taiwan.
authors.forename: Ching-Yang
authors.initials: CY
authors.lastname: Liu
authors.affiliation: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.
authors.forename: Shih-Sheng
authors.initials: SS
authors.lastname: Sun
authors.affiliation: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan. tjchow@gate.sinica.edu.tw.
authors.forename: Tahsin J
authors.initials: TJ
authors.lastname: Chow
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D011211:Electric Power Supplies; D004563:Electrochemistry; D004579:Electron Transport; D010087:Oxides / Q000737:chemistry*; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
chemical_list: D001555:Benzene Derivatives; D017610:Calcium Compounds; D010087:Oxides; C059910:perovskite; C010219:mesitylene; D014025:Titanium
keywords: bimesitylenes; hole-transporting materials; perovskite solar cell; stability; twisted structure