Kluska, SvenSvenKluskaHaberstoh, ReneReneHaberstohGrübel, BenjaminBenjaminGrübelCimiotti, GiselaGiselaCimiottiKamp, MathiasMathiasKampSchmiga, ChristianChristianSchmigaBrand, AndreasAndreasBrandSteinhauser, BerndBerndSteinhauserNägele, AndreasAndreasNägelePassig, MichaelMichaelPassigSieber, MarkusMarkusSieberBrunner, DamianDamianBrunnerFox, StephenStephenFox2022-09-282022-09-282022Note-ID: 0000925Ahttps://publica.fraunhofer.de/handle/publica/42708310.1016/j.solmat.2022.1118892-s2.0-85134726563Plated Ni/Cu/Ag contacts offer the possibility to significantly reduce silver consumption for tunnel oxide passivated contact (TOPCon) solar cells. This work demonstrates industrial bifacial TOPCon solar cells with plated Ni/Cu/Ag metallization achieving champion solar cell efficiencies of up to 24.0%. The influence of reduced poly-Si thickness down to 60 nm of the TOPCon rear side on the open circuit voltage (Voc) is analysed and the impact of laser-induced damage during laser contact opening (LCO) is characterized. Furthermore, mitigation strategies to systematic fill factor losses are developed including laser-induced nano-roughness within the LCO to increase contact adhesion and current-annealing to improve contact resistance.enjournal article