1. Potassium-induced surface modification of Cu(In, Ga)Se2 thin films for high-efficiency solar cells;Chirilă;Nat. Mater.,2013
2. CIGS-PV, 2015. White paper for cigs thin film solar cell technology (accessed: 17/10/2019). Available from: https://cigs-pv.net/wortpresse/wp-content/uploads/2015/12/CIGS-WhitePaper.pdf.
3. CIGS-PV, 2019. CIGS white paper (accessed: 17/10/2019). Available from: https://cigs-pv.net/wortpresse/wp-content/uploads/2019/04/CIGS_White_Paper_2019_online.pdf.
4. Progress in thin film CIGS photovoltaics – Research and development, manufacturing, and applications;Feurer;Progr. Photovoltaics,2017
5. Flisom, 2019. Flexible Solar Modules. Available from: https://flisom.com.