Diffusion and incorporation of Cd in solar-grade Cu(In,Ga)Se2 layers
- 5 December 2011
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 99 (23), 234101
- https://doi.org/10.1063/1.3665036
Abstract
We examined Cd diffusion in Cu(In,Ga)Se2 layers by means of the radiotracer technique. Depth profiles of 109Cd were determined by ion-beam sputter-sectioning upon isothermal diffusion in the range from 197 to 425 °C. The Cd diffusivity can be described by the Arrhenius equation DCd = 4.8 × 10−4 exp (−1.04 eV/kBT )cm2s−1. Atom-probe tomography on a sample saturated with natural Cd at 450 °C revealed its homogeneous incorporation over the crystal volume.Keywords
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