@inproceedings{f726f14eb18c478c8a39bbcca917c449,
title = "Multi-stage co-evaporation process for active Ga gradient control in CIGS solar cells",
abstract = "The control of the in-depth compositional gradient in Cu(In,Ga)Se2 (CIGS) absorber layers is known to be crucial to achieve very high solar to electric energy conversion efficiencies in CIGS-based solar cells. In this work we varied the Ga-gradient extrinsically, i.e. by changing the ratio of In and Ga deposition rates throughout the deposition of CIGS. We show that the double Ga gradient intrinsically achieved by the 3-stage co-evaporation process can be further optimized. The challenge thereby is to lower the optical band gap while maintaining a high open circuit voltage and fill-factor.",
keywords = "CIGS, GDOES, gradient, optimization",
author = "Torben Klinkert and Marie Jubault and Frederique Donsanti and Daniel Lincot and Guillemoles, \{Jean Francois\}",
note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 40th IEEE Photovoltaic Specialist Conference, PVSC 2014 ; Conference date: 08-06-2014 Through 13-06-2014",
year = "2014",
month = oct,
day = "15",
doi = "10.1109/PVSC.2014.6924941",
language = "English",
series = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "395--397",
booktitle = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",
}