Advanced UV-fluorescence image analysis for early detection of PV-power degradation Lukas Neumaier, Gabriele C. Eder, Yuliya Voronko, Karl A. Berger, Gusztáv Újvári and Karl Knöbl EPJ Photovolt., 14 (2023) 9 Published online: 10 February 2023 DOI: 10.1051/epjpv/2023001