Encapsulation also removes the antireflection conditions in case that the front ZnO was originally designed as ARC. As a result, a solar cell grown by solid-phase epitaxy achieves open circuit voltage of 468 mV, short circuit current of 9.17 mA/cm 2, and photovoltaic conversion efficiency at 2.75 which. For substrate solar cells encapsulated with EVA and a glass cover, however, additional texture of the front ZnO has hardly any effect. Consequently, PC1D modelled minority carrier diffusion length in the vapour-phase grown epilayer is 50 shorter than that in the solid-phase grown epilayer. Before encapsulation, certain textures of the front ZnO exhibit improved light coupling for substrate solar cells. The surface texture of the front ZnO was varied to study the possibility to reduce reflection losses and to improve light trapping. 1 Electronics and Computer Science, University of Southampton, Southampton, SO17 1BJ, UK 2 EcherKon Technologies Ltd.
Pc1d university of new south wales series#
The optical properties of microcrystalline silicon substrate-type solar cells with a front ZnO thickness of 500–1000 nm as required for monolithic series connection in PV-modules are investigated.
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