Indacenodithienothiophene–naphthalene diimide copolymer as an acceptor for all-polymer solar cells. Issue 16 (1st April 2016)

• Record Type: Journal Article
• Authors: Xue, Lingwei; Yang, Yankang; Zhang, Zhi-Guo; Dong, Xinning; Gao, Liang; Bin, Haijun; Zhang, Jing; Yang, YunXu; Li, Yongfang
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 16(2016)
• Page Start: 5810
• Page End: 5816
• Publication Date: 2016-04-01
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta01933a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : With a low bandgap copolymerP(IDT-NDI) as an acceptor material and a medium bandgap polymer J51 as a donor material, efficient all-polymer solar cell are realized. Abstract : An alternating copolymer (P(IDT-NDI) ) containing indacenodithienothiophene (IDT) and naphthalene diimide (NDI) units was synthesized for application as an acceptor material in all-polymer solar cells (all-PSCs). The polymer possesses a low bandgap of 1.51 eV, a suitable LUMO level of −3.84 eV and a HOMO level of −5.75 eV for use as an acceptor material instead of PCBM. Three conjugated polymers including J50 and J51 with a medium bandgap ( ca. 1.9 eV) and PTB7-Th with a low bandgap (1.59 eV) were selected as donor materials for the investigation of the photovoltaic performance of the nonfullerene acceptorP(IDT-NDI) . The champion all-PSCs withP(IDT-NDI) as an acceptor demonstrated power conversion efficiencies of 3.63%, 4.12% and 5.33% for the polymer donors PTB7-Th, J50 and J51, respectively. The results indicate that the complementary absorption of the polymer donor with polymer acceptor is very important for high performance all-PSCs andP(IDT-NDI) is a promising polymer acceptor for all-PSCs.