Panchromatic terthiophenyl-benzodithiophene conjugated porphyrin donor for efficient organic solar cells. Issue 3 (22nd December 2021)

• Record Type: Journal Article
• Authors: Tang, Wei; Xie, Liuping; Liu, Zhixin; Zeng, Jie; Zhou, Xuan; Bi, Pengqing; Tang, Wencheng; Yan, Lei; Wong, Wai-Kwok; Zhu, Xunjin; Hao, Xiaotao; Zhu, Weiguo; Wang, Xingzhu
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 3(2022)
• Page Start: 1077
• Page End: 1083
• Publication Date: 2021-12-22
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc01172c
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A panchromatic terthiophenyl-benzodithiophene conjugated porphyrin donor for efficient organic solar cells exhibited an optimized PCE of 8.59%. Abstract : Two intermediate-sized acceptor–π–porphyrin–π–acceptor-type molecules MPor1 and MPor2 with panchromatic absorption profiles have been developed towards improving photovoltaic performance. The conjugation of terthiophenyl-benzodithiophene to the porphyrin center successfully fills the absorption gap between the Soret and Q bands of the conventional porphyrin molecules and leads to narrow optical bandgaps within 1.58–1.60 eV. The two molecules possess excellent light-harvesting property within the UV-visible-near-infrared region, and efficient hole-electron separation in the bulk heterojunction layer with PC71 BM as the acceptor. Conventional solar cells based on the MPor1 /PC71 BM active layer shows an optimal performance with a power conversion efficiency of 8.59% and a short circle current of 14.91 mA cm −2 .