Under CopyrightHeitmann, UlrikeUlrikeHeitmannBartsch, JonasJonasBartschKluska, SvenSvenKluskaHermann, R.R.HermannHauser, HubertHubertHauserHöhn, OliverOliverHöhnPredan, FelixFelixPredanLackner, DavidDavidLacknerDimroth, FrankFrankDimrothJanz, StefanStefanJanz2022-03-1426.2.20213.3.20212020https://publica.fraunhofer.de/handle/publica/41015910.1109/PVSC45281.2020.930064610.24406/publica-r-410159By adjusting the process flow of a newly developed transparent conductive adhesive (TCA), the first mechanically stable interconnection of a glued III-V on Si tandem solar cell was established utilizing a ZnO-based adhesive. The measured VOC of 1691 mV is a first proof of concept for the developed TCA. The functionality of the two sub-cells in the tandem device was proven by external quantum efficiency (EQE) measurements. The reflectance at the bond interface of such a glued tandem solar cell remains the limiting factor. In order to reduce the optical losses, the effect of a textured silicon surface was investigated in test structures, which indeed showed reduced reflectance. Furthermore, this textured test structure showed an improved connecting resistivity as low as 83 mOcm2.enPhotovoltaikNeuartige Photovoltaik-TechnologienTandemsolarzellen auf kristallinem Silicium621697conference paper