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Effect of varying deposition and substrate temperature on sublimated CdTe thin film photovoltaics

conference contribution
posted on 03.11.2016 by Amit Munshi, Jason M. Kephart, Ali Abbas, Tushar M. Shimpi, Kurt L. Barth, Michael Walls, Walajabad S. Sampath
A standardized process used for fabrication of CdTe solar cells was varied by increasing the substrate temperature during CdTe layer nucleation from approximately 460ºC to 610ºC and by increasing the CdTe sublimation vapor source temperature. Higher substrate temperatures increase device efficiency, but cause significant CdS re-sublimation. This effect was eliminated by using a Mg1-xZnxO window layer that also has higher transparency. Elevated CdTe source temperatures were found to increase contamination in the deposition system but did not further improve device efficiency. The improvement using high substrate temperatures is attributed to larger CdTe grains and better crystalline quality. TEM cross section analysis, X-ray diffraction measurements and device results are presented.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

43rd IEEE Photovoltaics Specialist Conference

Pages

465 - 469 (5)

Citation

MUNSHI, A. ...et al., 2016. Effect of varying deposition and substrate temperature on sublimated CdTe thin film photovoltaics. Presented at the 43rd IEEE Photovoltaics Specialist Conference, Portland, OR, 5-10th June, pp.465-469.

Publisher

IEEE

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

10/10/2016

Publication date

2016

Notes

This paper is in closed access. This paper was developed into a journal paper and can be read at: https://dspace.lboro.ac.uk/2134/22354

ISBN

9781509027248

Language

en

Location

Portland, OR

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