2016 IEEE Laser Annealing of thin film CdTe solar cells using a 808nm dide laser 2.pdf (1.3 MB)
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Laser annealing of thin film CdTe solar cells using a 808 nm diode laser

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conference contribution
posted on 16.07.2018 by Fabiana Lisco, Nick Goffin, Ali Abbas, Gianfranco Claudio, Elliot Woolley, John Tyrer, Michael Walls
© 2017 IEEE. We report on the effect of a new laser annealing treatment for thin film CdTe solar cells using a 808 nm diode laser. As-deposited, laser annealed and MgCl2treated/laser annealed CdTe thin films have been analysed. One part of the work has been focused on understanding the efficacy of the activation treatment by laser annealing. The results show partial chlorine diffusion and associated partial re-crystallisation of the absorber. The second part of this work has been focused on the effect of the treatment on the chemical composition of the CdTe surface. It has been found that the process also contributes to the formation of a Te-rich layer on the surface of the CdTe absorber, which may provide a useful process to produce a back contact. This paper reveals the effect of the laser treatment on the microstructural properties of the CdTe absorber material. The microstructure has been analysed using STEM/EDX, HRTEM and XRD. Further work is required to optimise the process but it has the potential to provide much greater control than current activation methods and also to provide a Te back contact suitable for CdTe solar cells.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

Pages

1 - 6

Citation

LISCO, F. ...et al., 2018. Laser annealing of thin film CdTe solar cells using a 808 nm diode laser. Presented at the 2017 IEEE 44th Photovoltaic Specialist Conference, (PVSC 2017), Portland, OR, USA, 5-10th June.

Publisher

© IEEE

Version

AM (Accepted Manuscript)

Publication date

2018-11-05

Notes

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.

ISBN

9781509056057

Language

en

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