Dithieno[2, 3‐d:2′, 3′‐d′]naphtho[2, 1‐b:3, 4‐b′]dithiophene based medium bandgap conjugated polymers for photovoltaic applications. Issue 15 (9th January 2016)

• Record Type: Journal Article
• Authors: Yang, Chunyan; Li, Huijuan; Tong, Junfeng; Li, Jianfeng; Zhang, Peng; Xia, Yangjun
• Is Part Of: Journal of applied polymer science. Volume 133:Issue 15(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-01-09
• Subjects: applications -- optical and photovoltaic applications -- properties and characterization; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.43288
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: Three novel medium band gap (MBG) conjugated polymers (CPs) (named as P1, P2, and P3, respectively) were developed by copolymerizing 2, 7‐dibromo‐10, 11‐di(2‐hexyldecyloxy)dithieno[2, 3‐d:2′, 3′‐d′]naphtho[2, 1‐b:3, 4‐b′]dithiophene (NDT‐Br) with three different units: 2, 5‐bis(tributylstannyl)thiophene, 2, 5‐bis(trimethylstannyl)thieno[3, 2‐b]thiophene and trans −1, 2‐bis(tributylstannyl)ethene, respectively. The thermal, optical, and electrochemical properties of the polymers were investigated. All of the polymers have good thermal stability and medium band gap (∼ 1.9 eV). Prototype bulk heterojunction photovoltaic cells based on the blend P1/P2/P3 and [6, 6] phenyl‐C61 butyric acid methyl ester (PC61 BM) were assembled and the photovoltaic properties were assessed. Power conversion efficiencies (PCEs) of 1.61% ∼ 2.43% have been obtained under 100 mW cm −2 illumination (AM1.5). © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016, 133, 43288. Abstract :