The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT: PSS hole transport layer

Bardo J. Bruijnaers; Eric Schiepers; Christ H.L. Weijtens; Stefan C.J. Meskers; Martijn M. Wienk; René A.J. Janssen

doi:10.1039/c7ta11128b

The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT: PSS hole transport layer

Bardo J. Bruijnaers, Eric Schiepers, Christ H.L. Weijtens, Stefan C.J. Meskers, Martijn M. Wienk, René A.J. Janssen

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is frequently used as hole transport layer in planar p-i-n perovskite solar cells. Here we show that processing of a metal halide perovskite layer on top of PEDOT:PSS via spin coating of a precursor solution chemically reduces the oxidation state of PEDOT:PSS. This reduction leads to a lowering of the work function of the PEDOT:PSS and the perovskite layer on top of it. As a consequence, the solar cells display inferior performance with a reduced open-circuit voltage and a reduced short-circuit current density, which increases sublinearly with light intensity. The reduced PEDOT:PSS can be re-oxidized by thermal annealing of the PEDOT:PSS/perovskite layer stack in the presence of oxygen. As a consequence, thermal annealing of the perovskite layer in air provides solar cells with increased open-circuit voltage, short-circuit current density and high efficiency.

Originele taal-2	Engels
Pagina's (van-tot)	6882-6890
Aantal pagina's	9
Tijdschrift	Journal of Materials Chemistry A
Volume	6
Nummer van het tijdschrift	16
DOI's	https://doi.org/10.1039/c7ta11128b
Status	Gepubliceerd - 28 apr. 2018

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The research received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement No. 339031, forms part of the Solliance programme, and has received funding from the Ministry of Education, Culture and Science (Gravity program 024.001.035).

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title = "The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT: PSS hole transport layer",

abstract = "Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is frequently used as hole transport layer in planar p-i-n perovskite solar cells. Here we show that processing of a metal halide perovskite layer on top of PEDOT:PSS via spin coating of a precursor solution chemically reduces the oxidation state of PEDOT:PSS. This reduction leads to a lowering of the work function of the PEDOT:PSS and the perovskite layer on top of it. As a consequence, the solar cells display inferior performance with a reduced open-circuit voltage and a reduced short-circuit current density, which increases sublinearly with light intensity. The reduced PEDOT:PSS can be re-oxidized by thermal annealing of the PEDOT:PSS/perovskite layer stack in the presence of oxygen. As a consequence, thermal annealing of the perovskite layer in air provides solar cells with increased open-circuit voltage, short-circuit current density and high efficiency.",

author = "Bruijnaers, {Bardo J.} and Eric Schiepers and Weijtens, {Christ H.L.} and Meskers, {Stefan C.J.} and Wienk, {Martijn M.} and Janssen, {Ren{\'e} A.J.}",

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The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT: PSS hole transport layer. / Bruijnaers, Bardo J.; Schiepers, Eric; Weijtens, Christ H.L. et al.
In: Journal of Materials Chemistry A, Vol. 6, Nr. 16, 28.04.2018, blz. 6882-6890.

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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T1 - The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT

T2 - PSS hole transport layer

AU - Bruijnaers, Bardo J.

AU - Schiepers, Eric

AU - Weijtens, Christ H.L.

AU - Meskers, Stefan C.J.

AU - Wienk, Martijn M.

AU - Janssen, René A.J.

PY - 2018/4/28

Y1 - 2018/4/28

N2 - Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is frequently used as hole transport layer in planar p-i-n perovskite solar cells. Here we show that processing of a metal halide perovskite layer on top of PEDOT:PSS via spin coating of a precursor solution chemically reduces the oxidation state of PEDOT:PSS. This reduction leads to a lowering of the work function of the PEDOT:PSS and the perovskite layer on top of it. As a consequence, the solar cells display inferior performance with a reduced open-circuit voltage and a reduced short-circuit current density, which increases sublinearly with light intensity. The reduced PEDOT:PSS can be re-oxidized by thermal annealing of the PEDOT:PSS/perovskite layer stack in the presence of oxygen. As a consequence, thermal annealing of the perovskite layer in air provides solar cells with increased open-circuit voltage, short-circuit current density and high efficiency.

AB - Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is frequently used as hole transport layer in planar p-i-n perovskite solar cells. Here we show that processing of a metal halide perovskite layer on top of PEDOT:PSS via spin coating of a precursor solution chemically reduces the oxidation state of PEDOT:PSS. This reduction leads to a lowering of the work function of the PEDOT:PSS and the perovskite layer on top of it. As a consequence, the solar cells display inferior performance with a reduced open-circuit voltage and a reduced short-circuit current density, which increases sublinearly with light intensity. The reduced PEDOT:PSS can be re-oxidized by thermal annealing of the PEDOT:PSS/perovskite layer stack in the presence of oxygen. As a consequence, thermal annealing of the perovskite layer in air provides solar cells with increased open-circuit voltage, short-circuit current density and high efficiency.

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The effect of oxygen on the efficiency of planar p-i-n metal halide perovskite solar cells with a PEDOT: PSS hole transport layer

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