Graded band gap CIGS solar cells considering the valence band widening

• Published in: 2012 38th IEEE Photovoltaic Specialists Conference pp. 000906 - 000908
• Main Authors: Gorji, Nima E., Reggiani, U., Sandrolini, L.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2012
• Subjects: band gap grading; charge transfer; CIGS solar cells; Gallium; Passivation; Performance evaluation; Photonic band gap; Photovoltaic cells; valence band widening

CIGS thin film solar cells with Valence Band (VB) and Conduction Band (CB) grading in the space charge region and back surface region of the absorber layer are proposed in this paper. In all the examined profiles the VB widening effects on the performance parameters by promoting the carrier transfor...