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Vacuum-free fabrication of high-performance semitransparent perovskite solar cells via e-glue assisted lamination process

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  • ReceivedMar 2, 2019
  • AcceptedApr 23, 2019
  • PublishedMay 6, 2019

Abstract

From a base material of conductive polymer (poly-(3,4-ethylenedioxythiophene):poly(styrenesulfonate), PEDOT:PSS), a flexible and high-conductivity (as low as 45 Ω/sq) transparent electrode was fabricated on polydimethylsiloxane elastomer by an acid treatment and transfer process. Combined with the D-sorbitol-doped PEDOT:PSS electric glue, we successfully demonstrated a vacuum-free and ambient lamination fabrication process for semi-transparent perovskite solar cells using triple cation Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 perovskite. By this manufacturing-friendly lamination process, we fabricated semitransparent perovskite solar cell devices with power conversion efficiencies up to 16.4% and variable transparencies.


Funded by

Shenzhen Science and Technology Innovation Commission(JCYJ20170413154602102)

Research Grants Council(RGC)

the Project of Strategic Importance provided by the Hong Kong Polytechnic University(1-ZE29)

the Hong Kong Scholars Program(XJ2017046,Wei,Yu)

Hong Kong RGC CRF(C5015-15G)


Acknowledgment

This work was supported by Shenzhen Science and Technology Innovation Commission (JCYJ20170413154602102), Research Grants Council (RGC) of Hong Kong (15246816, 15218517), the Project of Strategic Importance provided by the Hong Kong Polytechnic University (1-ZE29), the Hong Kong Scholars Program (XJ2017046, Wei Yu), Hong Kong RGC CRF (C5015-15G).


Interest statement

The authors declare that they have no conflict of interest.


Supplement

The supporting information is available online at http://chem.scichina.com and http://link.springer.com/journal/11426. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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  • Figure 1

    (a) Schematic of a transparent perovskite solar cell; (b) optical image of the HC-Tape; (c) comparison of squared resistances of PEDOT:PSS prepared in different acid treatments and D-sorbitol doping treatments; (d) optical transmission spectra of FTO, PDMS, PDMS/n-PEDOT:PSS, and HC-Tape (PDMS/n-PEDOT:PSS/electric glue) (color online).

  • Figure 2

    AFM images of (a) pristine PEDOT:PSS film and (b) n-PEDOT:PSS film after nitric acid treatment (color online).

  • Figure 3

    SEM image of perovskite film.

  • Figure 4

    (a) J-V curves of the reference device (FTO/SnO2/Perovskite/Spiro-OMeTAD/Au), laminated devices (with e-glue) illuminated from the bottom FTO and top HC-Tape sides, laminated devices (without e-glue) illuminated from the bottom FTO side; (b) EQE spectra of the reference and laminated devices (with or without e-glue) illuminated from both the bottom and top electrodes (color online).

  • Figure 5

    (a) J-V curves of opaque and transparent devices with different thicknesses (260 and 470 nm); (b) EQE spectra of the 260 nm- and 470 nm-thick opaque and transparent devices (color online).

  • Figure 6

    Optical transmission of semi-transparent perovskite solar cells with different thicknesses (150, 260 and 470 nm) (color online).

  • Table 1   Performance parameters of the fabricated solar cell

    Back contact

    Illumination direction

    Voc (V)

    Jsc (mA/cm2)

    FF (%)

    PCE (%)

    Au

    FTO

    1.1262

    23.3

    75.3

    19.75

    HC-Tape

    FTO

    1.059

    22.7

    68.2

    16.4

    HC-Tape

    HC-Tape

    1.037

    18.5

    66

    12.7

    n-PEDOT:PSS laminate w/o e-glue

    FTO

    0.81

    14.3

    72

    8.5

  • Table 2   Performance parameters of solar cells with different thicknesses and transparencies

    Device

    Illumination direction

    Voc (V)

    Jsc (mA/cm2)

    FF (%)

    PCE (%)

    Opaque (470 nm)

    FTO

    1.1262

    23.3

    75.3

    19.75

    Semi-transparent (470 nm)

    FTO

    1.059

    22.7

    68.2

    16.4

    Opaque (260 nm)

    FTO

    1.14

    19.4

    78.9

    17.5

    Semi-transparent (260 nm)

    FTO

    1.08

    17.37

    75

    14.07

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