SPLTRAK Abstract Submission
CIGS/Perovskite Thin Film Tandem Devices
Christian Kaufmann
Helmholtz-Zentrum Berlin / PVcomB, Germany, , ,

Authors: C.A. Kaufmann, T. Bertram, M. Jošt, A. Al-Ashouri, T. Kodalle, A. Ruiz Perona, J.A. Márquez Prieto, I. Kafedjiska, N. Maticiuc, R. Wenisch, H.A. Yetkin, G.A. Farias Basulto, P. Reyes Figueroa, T.J. Jacobsson, M.A. Ruiz Preciado, T. Unold, E. Unger, U.W. Paetzold, R. Klenk, I. Lauermann, S. Albrecht, R. Schlatmann Chalcopyrite/perovskite tandem devices are among the current potentially low cost tandem photovoltaic (PV) technologies and hence fuel advances in chalcopyrite technologies to fulfill the requirements necessary to compete on the global PV market. They promise to combine high area power densities with large scale manufacturability. Exploiting the advantages of thin film technologies, they can be flexible and light weight and thus attractive for applications such as vehicle integrated PV and roofing. Two-terminal tandem photovoltaic modules promise easy and cost-effective application in the field as they can simply substitute current modules in existing PV system environments. Four-terminal tandem devices may be developed sooner and offer an additional degree of freedom, as current matching requirements do not apply. On rigid glass substrates, monolithic Cu(In,Ga)Se2/Cs0.05(MA0.23FA0.77)Pb1.1(I0.77Br0.23)3 tandem devices have demonstrated considerable technological advancement, reaching a photoconversion efficiency of 24.16%. This contribution will discuss technological challenges for thin film tandem technologies and report on recent advances.