Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells

Ashok Bera; Kewei Wu; Arif D. Sheikh; Erkki Alarousu; Omar F. Mohammed; Tao Wu

doi:10.1021/jp509753p

Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells

Ashok Bera, Kewei Wu, Arif D. Sheikh, Erkki Alarousu, Omar F. Mohammed, Tao Wu

Research output: Contribution to journal › Article › peer-review

267 Scopus citations

Abstract

In this work, we explored perovskite oxide SrTiO3 (STO) for the first time as the electron-transporting layer in organolead trihalide perovskite solar cells. The steady-state photoluminescence (PL) quenching and transient absorption experiments revealed efficient photoelectron transfer from CH3NH3PbI3-xClx to STO. Perovskite solar cells with meso-STO exhibit an open circuit voltage of 1.01 V, which is 25% higher than the value of 0.81 V achieved in the control device with the conventional meso-TiO2. In addition, an increase of 17% in the fill factor was achieved by tailoring the thickness of the meso-STO layer. We found that the application of STO leads to uniform perovskite layers with large grains and complete surface coverage, leading to a high shunt resistance and improved performance. These findings suggest STO as a competitive candidate as electron transport material in organometal perovskite solar cells.

Original language	English (US)
Pages (from-to)	28494-28501
Number of pages	8
Journal	The Journal of Physical Chemistry C
Volume	118
Issue number	49
DOIs	https://doi.org/10.1021/jp509753p
State	Published - Dec 2 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).

ASJC Scopus subject areas

Surfaces, Coatings and Films
General Energy
Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials

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@article{fd2a587b49b84424a487d4a567acd787,

title = "Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells",

abstract = "In this work, we explored perovskite oxide SrTiO3 (STO) for the first time as the electron-transporting layer in organolead trihalide perovskite solar cells. The steady-state photoluminescence (PL) quenching and transient absorption experiments revealed efficient photoelectron transfer from CH3NH3PbI3-xClx to STO. Perovskite solar cells with meso-STO exhibit an open circuit voltage of 1.01 V, which is 25% higher than the value of 0.81 V achieved in the control device with the conventional meso-TiO2. In addition, an increase of 17% in the fill factor was achieved by tailoring the thickness of the meso-STO layer. We found that the application of STO leads to uniform perovskite layers with large grains and complete surface coverage, leading to a high shunt resistance and improved performance. These findings suggest STO as a competitive candidate as electron transport material in organometal perovskite solar cells.",

author = "Ashok Bera and Kewei Wu and Sheikh, {Arif D.} and Erkki Alarousu and Mohammed, {Omar F.} and Tao Wu",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).",

year = "2014",

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doi = "10.1021/jp509753p",

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T1 - Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells

AU - Bera, Ashok

AU - Wu, Kewei

AU - Sheikh, Arif D.

AU - Alarousu, Erkki

AU - Mohammed, Omar F.

AU - Wu, Tao

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).

PY - 2014/12/2

Y1 - 2014/12/2

N2 - In this work, we explored perovskite oxide SrTiO3 (STO) for the first time as the electron-transporting layer in organolead trihalide perovskite solar cells. The steady-state photoluminescence (PL) quenching and transient absorption experiments revealed efficient photoelectron transfer from CH3NH3PbI3-xClx to STO. Perovskite solar cells with meso-STO exhibit an open circuit voltage of 1.01 V, which is 25% higher than the value of 0.81 V achieved in the control device with the conventional meso-TiO2. In addition, an increase of 17% in the fill factor was achieved by tailoring the thickness of the meso-STO layer. We found that the application of STO leads to uniform perovskite layers with large grains and complete surface coverage, leading to a high shunt resistance and improved performance. These findings suggest STO as a competitive candidate as electron transport material in organometal perovskite solar cells.

AB - In this work, we explored perovskite oxide SrTiO3 (STO) for the first time as the electron-transporting layer in organolead trihalide perovskite solar cells. The steady-state photoluminescence (PL) quenching and transient absorption experiments revealed efficient photoelectron transfer from CH3NH3PbI3-xClx to STO. Perovskite solar cells with meso-STO exhibit an open circuit voltage of 1.01 V, which is 25% higher than the value of 0.81 V achieved in the control device with the conventional meso-TiO2. In addition, an increase of 17% in the fill factor was achieved by tailoring the thickness of the meso-STO layer. We found that the application of STO leads to uniform perovskite layers with large grains and complete surface coverage, leading to a high shunt resistance and improved performance. These findings suggest STO as a competitive candidate as electron transport material in organometal perovskite solar cells.

UR - http://hdl.handle.net/10754/563917

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U2 - 10.1021/jp509753p

DO - 10.1021/jp509753p

M3 - Article

SN - 1932-7447

VL - 118

SP - 28494

EP - 28501

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 49

ER -

Perovskite oxide SrTiO3 as an efficient electron transporter for hybrid perovskite solar cells

Abstract

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