Jump to main content
Jump to site search


Enhanced intramolecular charge transfer of unfused electron acceptors for efficient organic solar cells

Author affiliations

Abstract

It is promising, yet challenging, to employ molecules of slight synthetic complexity to construct efficient and low-cost organic solar cells (OSCs). Herein, two unfused acceptors, DF-TCIC and HF-TCIC, were developed for OSC applications, in which the 3,4-difluorothiophene core connected through a cyclopentadithiophene (CPDT) bridge to 1,1-dicyanomethylene-3-indanone derivatives (IC for DF-TCIC and DFIC for HF-TCIC, respectively). As mediated by intramolecular non-covalent interactions, these unfused acceptors exhibited a nearly planar structure, and a strong charge transfer effect. HF-TCIC-based OSCs showed a high short-circuit current density (Jsc) of 20.04 mA cm−2 and a power conversion efficiency (PCE) of 9.86%, thereby outperforming DF-TCIC-based devices (Jsc of 16.39 mA cm−2 and PCE of 8.23%). This work suggests that unfused acceptors of slight synthetic complexity are promising for OSC applications.

Graphical abstract: Enhanced intramolecular charge transfer of unfused electron acceptors for efficient organic solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Nov 2018, accepted on 17 Jan 2019 and first published on 18 Jan 2019


Article type: Research Article
DOI: 10.1039/C8QM00609A
Citation: Mater. Chem. Front., 2019, Advance Article

  •   Request permissions

    Enhanced intramolecular charge transfer of unfused electron acceptors for efficient organic solar cells

    R. Qin, W. Yang, S. Li, T. Lau, Z. Yu, Z. Liu, M. Shi, X. Lu, C. Li and H. Chen, Mater. Chem. Front., 2019, Advance Article , DOI: 10.1039/C8QM00609A

Search articles by author

Spotlight

Advertisements