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Issue 11, 2018
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High performance as-cast semitransparent polymer solar cells

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Semi-transparent polymer solar cells (ST-PSCs) have attracted great attention recently because of their potential for application in smart windows, etc. Here, we fabricated ST-PSCs based on a low band-gap conjugated polymer, PTB7-Th, as the donor and a narrow band-gap n-type organic semiconductor (n-OS), ITVfIC, as the acceptor. The active layer (with a thickness of 100 nm) of the ST-PSC exhibits a high average transmittance (AT) of 73.46% in the wavelength range of 400–600 nm. The as-cast ST-PSC with 15 nm Ag as the cathode without any additive or thermal-annealing treatment shows a higher power conversion efficiency (PCE) of 8.21% with an AT of 33.7%, which is one of the highest values for ST-PSCs without extra treatment. In addition, the ST-PSCs show good thermal stability with 91% of their original PCE value retained after high temperature treatment at 200 °C for 2 hours. The higher PCE and good stability indicate that the ST-PSC has potential for practical application and the narrow bandgap ITVfIC could be a promising n-OS acceptor for the fabrication of ST-PSCs.

Graphical abstract: High performance as-cast semitransparent polymer solar cells

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Publication details

The article was received on 18 Jan 2018, accepted on 13 Feb 2018 and first published on 15 Feb 2018

Article type: Paper
DOI: 10.1039/C8TA00581H
Citation: J. Mater. Chem. A, 2018,6, 4670-4677
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    High performance as-cast semitransparent polymer solar cells

    H. Huang, X. Li, L. Zhong, B. Qiu, Y. Yang, Z. Zhang, Z. Zhang and Y. Li, J. Mater. Chem. A, 2018, 6, 4670
    DOI: 10.1039/C8TA00581H

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