Direct evidence of current blocking by ZnSe in Cu2ZnSnSe4 solar cells
- 23 April 2012
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 100 (17), 173510
- https://doi.org/10.1063/1.4706256
Abstract
Thin films of polycrystalline Cu 2 ZnSnSe 4 were made by selenization of co-sputtered metallic precursors and processed to solar cells. Electron beam induced current (EBIC) in combination with microscopic scale IV characterization is used to investigate lateral inhomogeneities in electrical performance across the solar cell area. Transmission electron microscopy relates areas with low EBIC response to the formation of a ZnSe phase at the absorber surface resulting in a current blocking behavior and a reduced short-circuit current density for the solar cells. Areas without ZnSe have a high EBIC response and result in high quality diodes well suited for solar cells.Keywords
This publication has 11 references indexed in Scilit:
- Influence of precursor sulfur content on film formation and compositional changes in Cu2ZnSnS4 films and solar cellsSolar Energy Materials and Solar Cells, 2012
- Device characteristics of a 10.1% hydrazine‐processed Cu2ZnSn(Se,S)4 solar cellProgress In Photovoltaics, 2011
- Compositional dependence of structural and electronic properties of CuZnSn(S,Se)alloys for thin film solar cellsPhysical Review B, 2011
- Cu2ZnSnS4 thin film solar cells by fast coevaporationProgress In Photovoltaics, 2010
- Potential fluctuations in Cu2ZnSnSe4 solar cells studied by temperature dependence of quantum efficiency curvesPhysica B: Condensed Matter, 2010
- Estimates of te and in prices from direct mining of known oresProgress In Photovoltaics, 2009
- Cu2ZnSnSe4 thin film solar cells produced by selenisation of magnetron sputtered precursorsProgress In Photovoltaics, 2009
- Materials Availability Expands the Opportunity for Large-Scale Photovoltaics DeploymentEnvironmental Science & Technology, 2009
- Thin film PV manufacturing: Materials costs and their optimizationSolar Energy Materials and Solar Cells, 2000
- A phenomenological model for systematization and prediction of doping limits in II–VI and I–III–VI2 compoundsJournal of Applied Physics, 1998