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Atomic Layer Deposited Electron Transport Layers in Efficient Organometallic Halide Perovskite Devices

Published online by Cambridge University Press:  03 July 2018

Melissa M. McCarthy*
Affiliation:
Tyndall National Institute, University Cork College, Lee Maltings Complex, Cork, Ireland. School of Chemistry, University College Cork, Cork, Ireland.
Arnaud Walter
Affiliation:
Centre Suisse d’Electronique et de Microtechnique (CSEM), PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland.
Soo-Jin Moon
Affiliation:
Centre Suisse d’Electronique et de Microtechnique (CSEM), PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland.
Nakita K. Noel
Affiliation:
Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, UK.
Shane O’Brien
Affiliation:
Tyndall National Institute, University Cork College, Lee Maltings Complex, Cork, Ireland.
Martyn E. Pemble
Affiliation:
Tyndall National Institute, University Cork College, Lee Maltings Complex, Cork, Ireland. School of Chemistry, University College Cork, Cork, Ireland.
Sylvain Nicolay
Affiliation:
Centre Suisse d’Electronique et de Microtechnique (CSEM), PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland.
Bernard Wenger
Affiliation:
Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, UK.
Henry J. Snaith
Affiliation:
Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, UK.
Ian M. Povey
Affiliation:
Tyndall National Institute, University Cork College, Lee Maltings Complex, Cork, Ireland.
*
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Abstract

Amorphous TiO2 and SnO2 electron transport layers (ETLs) were deposited by low-temperature atomic layer deposition (ALD). Surface morphology and x-ray photoelectron spectroscopy (XPS) indicate uniform and pinhole free coverage of these ALD hole blocking layers. Both mesoporous and planar perovskite solar cells were fabricated based on these thin films with aperture areas of 1.04 cm2 for TiO2 and 0.09 cm2 and 0.70 cm2 for SnO2. The resulting cell performance of 18.3 % power conversion efficiency (PCE) using planar SnO2 on 0.09 cm2 and 15.3 % PCE using mesoporous TiO2 on 1.04 cm2 active areas are discussed in conjunction with the significance of growth parameters and ETL composition.

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Articles
Copyright
Copyright © Materials Research Society 2018 

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References

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