Pushing inverted metamorphic multijunction solar cells toward higher efficiency at realistic operating conditions

• Published in: 2012 IEEE 38th Photovoltaic Specialists Conference (PVSC) PART 2 pp. 1 - 6
• Main Authors: France, Ryan M., Geisz, John F., Steiner, Myles A., Friedman, Daniel J., Ward, J. Scott, Olson, Jerry M., Olavarria, Waldo, Young, Michelle, Duda, Anna
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2012
• Subjects: Concentration; Gallium arsenide; Junctions; material quality; multijunction (MJ) solar cells; Performance evaluation; Photonic band gap; Photovoltaic cells; temperature; Temperature measurement

A unique aspect of the inverted metamorphic multijunction (IMM) solar cell is the bandgap tunability of each junction, creating extremely flexible device designs. The optimal structure has subcell photocurrents that are matched for a given spectrum. However, the subcell photocurrents depend on the c...