Microscopic origins of performance losses in highly efficient Cu(In,Ga)Se₂ thin-film solar cells.

ABSTRACT: Thin-film solar cells based on polycrystalline absorbers have reached very high conversion efficiencies of up to 23-25%. In order to elucidate the limiting factors that need to be overcome for even higher efficiency levels, it is essential to investigate microscopic origins of loss mechanisms in these devices. In the present work, a high efficiency (21% without anti-reflection coating) copper indium gallium diselenide (CIGSe) solar cell is characterized by means of a correlative microscopy approach and corroborated by means of photoluminescence spectroscopy. The values obtained by the experimental characterization are used as input parameters for two-dimensional device simulations, for which a real microstructure was used. It can be shown that electrostatic potential and lifetime fluctuati

SUBMITTER: Krause M 

PROVIDER: S-EPMC7442832 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature