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Issue 15, 2017
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A transparent poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) cathode for low temperature processed, metal-oxide free perovskite solar cells

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Abstract

Low temperature processed, metal-oxide free planar perovskite solar cells (PSCs) were fabricated on glass and polyethylene terephthalate (PET) substrates using polyetherimide (PEI) modified poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) (PEDOT:PSS) as the cathode. The modification by PEI significantly changed the work function of PEDOT:PSS from −5.06 to −4.08 eV, yielding better electron transportation. The rigid cell on the glass substrate exhibited a high power conversion efficiency (PCE) of 12.42% without significant hysteresis and comparable to the PCE of PSCs with metal oxide cathodes. Moreover, the stability in air was higher by 32% than that of the devices with metal-oxide cathodes. The flexible device on the PET substrate exhibited a PCE of 9.73% and good bendability. Our results indicate that the flexibility of the PEDOT:PSS/PEI cathode is promising for use in large-scale roll-to-roll production of PSCs.

Graphical abstract: A transparent poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) cathode for low temperature processed, metal-oxide free perovskite solar cells

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Publication details

The article was received on 09 Dec 2016, accepted on 14 Mar 2017 and first published on 14 Mar 2017


Article type: Paper
DOI: 10.1039/C6TA10588B
Citation: J. Mater. Chem. A, 2017,5, 6974-6980
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    A transparent poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) cathode for low temperature processed, metal-oxide free perovskite solar cells

    L. Chen, X. Xie, Z. Liu and E. Lee, J. Mater. Chem. A, 2017, 5, 6974
    DOI: 10.1039/C6TA10588B

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