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2022 PVSC Ga-doping of MZO in CdSeTe_CdTe Thin Film Solar Cells.pdf (338.89 kB)
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Ga-doping of MZO in CdSeTe/CdTe thin film solar cells

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conference contribution
posted on 2023-01-06, 09:53 authored by Mustafa TogayMustafa Togay, Tushar Shimpi, Sampath S Walajabad, Kurt BarthKurt Barth, Eric Don, Gabor Parada, Michael WallsMichael Walls, Jake BowersJake Bowers

Metastable effects in high efficiency MZO/CdSeTe/CdTe solar cells have been studied in an attempt to recover the device performance. Devices with the MZO buffer layer have shown an 'S' shaped behaviour in the J-V characteristics before any preconditioning. This is removed after light soaking under 1000 Wm-2 at 25 °C. However, this recovery remained only for a short period of time while the devices were stored under vacuum in the dark. Recent studies with Ga doping of the buffer MZO has shown the removal of this metastability in the J-V characteristics of CdTe devices can be achieved without light soaking. A significant improvement in conductivity and Hall signal has been measured with Ga doped MZO layers compared to previously measured MZO films. However, a gradual decrease in the Hall signal has been observed over time after films were light soaked and removed from the desiccator.


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  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

2022 IEEE 49th Photovoltaics Specialists Conference (PVSC)


658 - 660


2022 IEEE 49th Photovoltaics Specialists Conference (PVSC)


Institute of Electrical and Electronics Engineers (IEEE)


  • AM (Accepted Manuscript)

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Publisher statement

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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  • en


Philadelphia, PA, USA

Event dates

5th June 2022 - 10th June 2022


Prof Michael Walls. Deposit date: 5 January 2023

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