2017 - Sustainable Industrial Processing Summit & Exhibition
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22-26 October 2017, Fiesta Americana Condesa Cancun All Inclusive Resort, Cancun, Mexico
Almost 400 Abstracts Submitted from 60 Countries
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PLENARY LECTURES AND VIP GUESTS
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Nicolas Barreau

Universite de Nantes, IMN

High-efficiency Solar Cells Based On Polycrystalline Cu(in,ga)se2 Thin Film: A Discussion On The Influence Of Alkali Fluoride Post-deposition Treatments
3rd Intl. Symp. Surfaces and Interfaces of Sustainable, Advanced Materials (SISAM)

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Abstract:

Cu(In,Ga)Se2 thin film solar cell technology has recently achieved the outstanding power conversion efficiency of 22.6 %. Such level of performance is surprising because these devices are based on polycrystalline layers and hetero-junctions; hence implying numerous homo- and hetero-interfaces. Nevertheless, the recent efficiency breakthrough was made possible thanks to specific post- deposition treatments of the Cu(In,Ga)Se2 absorber, which imply both surface and grain boundary modifications. So far, the best solar cells were prepared from absorbers which were treated by heavy alkali fluoride, namely KF or RbF. The present contribution aims at presenting and discussing the various models proposed up to date to explain grains and grain boundary modifications and their influence on the related solar cell performance.
Distinguished Guests

Prof. Dan Shechtman
2011 Nobel Prize Winner
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