Makita, K.; Kamikawa, Y.; Mizuno, H.; Oshima, R.; Shoji, Y.; Ishizuka, S.; Müller, R.; Beutel, P.; Lackner, D.; Benick, J.; Hermle, M.; Dimroth, F.; Sugaya, T., III-V//CuxIn1–yGaySe2 multijunction solar cells with 27.2% efficiency fabricated using modified smart stack technology with Pd nanoparticle array and adhesive material, Prog. Photovoltaics 2021, 29(8), 887-898, 10.1002/pip.3398