(D)n–σ–(A)m type partially conjugated block copolymer and its performance in single-component polymer solar cells. Issue 20 (5th May 2017)

• Record Type: Journal Article
• Authors: Lee, Dae Hee; Lee, Ji Hyung; Kim, Hyung Jong; Choi, Suna; Park, Gi Eun; Cho, Min Ju; Choi, Dong Hoon
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 20(2017)
• Page Start: 9745
• Page End: 9751
• Publication Date: 2017-05-05
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta01819c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : We synthesized two types of novel poly(3-alkylthiophene)-free (D)n - b -(A)m conjugated block copolymers: PTQI- block -PNDISs. Abstract : We synthesized two types of novel poly(3-alkylthiophene)-free (D)n - b -(A)m conjugated block copolymers: PTQI- block -PNDISs. PTQI- b -PNDIS is the fully conjugated block copolymer, in which the donor block is connected to the acceptor block via a π-conjugated unit. In addition, the donor block was connected to an acceptor block through a non-conjugated alkylene spacer, yielding PTQI- b -PNDISL, which is a partially conjugated block copolymer. The power conversion efficiency (PCE) was 1.54% with an open-circuit voltage of 0.79 V in the single-component polymer solar cell (PSC) based on PTQI- b -PNDISL, better performance than that of the PSC containing PTQI- b -PNDIS (PCE ∼ 0.36%). These results reveal the potential for improving the photovoltaic performance in PSCs by controlling the internal morphology with exploitation of the self-segregating behavior of p- and n-blocks in the film state.