Berlin 2015 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 36: Poster Session I
DS 36.29: Poster
Donnerstag, 19. März 2015, 09:30–12:00, Poster A
Alternative transparent electrode for inorganic solar cells based on amorphous silicon — •Daniel Rosenkranz1, Alex Neumüller2, Matin Vehese2, Jürgen Parisi1, and Manuela Schiek1 — 1Department of Physics, University of Oldenburg, 26111 Oldenburg, Germany — 2NEXT ENERGY EWE-Forschungszentrum für Energietechnologie e. V., Carl-von-Ossietzky-Straße 15, 26129 Old- enburg
Today there is a great research interest into developing alternative transparent electrodes with high transparency and low sheet resistance for different applications. One candidate are silver nanowires (AgNW) arranged into high transparent, flexible networks with low sheet resistance. These resulting properties are depending on nanowire geometry and network processing. Here a polyol synthesis will be used to get very long and thin nanowires with high aspect ratios. Furthermore, a spray coating method is used to prepare the nanowire networks for a top or back contact in solar cells based on amorphous silicon. At the backside of the solar cell the nanowire network can be smelted to receive well distributed silver spots/particles which can scatter light into the active layer. For dual performance as electrode and light-managing layer they are sandwiched between sputtered aluminium-doped zinc oxide (AZO) layers. In this work we prepare and characterize (optical, electrical and structural) thin stacks of AZO-AgNW-AZO with a defined roughness for light trapping based on the scattering effect of AgNWs.