Cathodoluminescence of Cu(In,Ga)Se2 thin films used in high-efficiency solar cells
- 8 December 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (23), 4770-4772
- https://doi.org/10.1063/1.1631083
Abstract
Cathodoluminescence spectroscopy and spectrum imaging are employed to investigate Cu(In,Ga)Se 2 (CIGS) thin films used in high-efficiency solar cells. We have found a nonuniform spatial distribution for the photonenergy. The shift by decade of the emission spectrum is also found to depend systematically on the location of excitation. In addition, the photonenergy at grain boundaries is not affected by the external excitation. A model for radiative recombination to be applied to these chalcopyrite compounds should explain these results, and some suggestions are considered.Keywords
This publication has 10 references indexed in Scilit:
- Properties of 19.2% efficiency ZnO/CdS/CuInGaSe2 thin‐film solar cellsProgress In Photovoltaics, 2003
- Radiative recombination via intrinsic defects in CuxGaySe2Journal of Applied Physics, 2001
- Progress toward 20% efficiency in Cu(In,Ga)Se2 polycrystalline thin-film solar cellsProgress In Photovoltaics, 1999
- Postgrowth thermal treatment of CuIn(Ga)Se2: Characterization of doping levels in In-rich thin filmsJournal of Applied Physics, 1999
- Characterization of CuIn(Ga)Se2 Thin FilmsPhysica Status Solidi (a), 1998
- Effects of Ga addition to CuInSe2 on its electronic, structural, and defect propertiesApplied Physics Letters, 1998
- Defect physics of thechalcopyrite semiconductorPhysical Review B, 1998
- Radiative recombination in CuInSe2 thin filmsJournal of Applied Physics, 1997
- Stabilization of Ternary Compounds via Ordered Arrays of Defect PairsPhysical Review Letters, 1997
- Radiative Lifetimes of Donor-Acceptor Pairs in-Type Gallium ArsenidePhysical Review B, 1969