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High efficiency CdTe solar cells by low temperature deposition with MgZnO HRT layer

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conference contribution
posted on 17.11.2017 by Daniele Menossi, Elisa Artegiani, Francesco Bittau, JW M. Barbato, M. Meneghini, G. Meneghesso, Jake Bowers, Michael Walls, F. Piccinelli, Alessandro Romeo
CdTe solar cells have shown high efficiency and the technology is scalable. As a result thin film CdTe modules are competitive with crystalline silicon modules. Thin film CdTe devices with efficiency above 22% have been reported using high substrate temperatures during the deposition process. It is known that high substrate temperatures result in large grain size with a reduced number of grain boundaries and this is believed to contribute to the high efficiency. However, use of high temperature requires robust substrates and excludes the use of most flexible substrate materials. It also involves higher energy consumption and more complicated machinery. In this work we present a process for high efficiency solar cells with an improved front contact, by introducing magnesium-doped zinc oxide high resistance transparent layer. By optimizing the fabrication process we have achieved a conversion efficiency exceeding 16%, which is one of the highest reported for substrate temperatures below 500°C.

Funding

This work has been supported by Fondazione Cassa di Risparmio di Trento e Rovereto with the TIN-Jet project.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

33rd European Photovoltaic Solar Energy Conference and Exhibition

Citation

MENOSSI, D. ...et al., 2017. High efficiency CdTe solar cells by low temperature deposition with MgZnO HRT layer. Presented at the 33rd European Photovoltaic Solar Energy Conference and Exhibition (PVSEC 2017), Amsterdam, 25-29th. September, pp. 1027-1030.

Publisher

© WIP

Version

VoR (Version of Record)

Publisher statement

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

Acceptance date

24/09/2017

Publication date

2017

Notes

This is a conference paper.

ISBN

3936338477

ISSN

2196-100X

Language

en

Location

Amsterdam

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