Abstract
Immediately after the GeV-implantation of 57Mn nuclei produced by the RIKEN-RIBF facility, 57Mn/ 57Fe Mössbauer spectra in Si-solar cells are measured under light illumination. Comparing with the spectrum of p-type multi-crystalline-Si, the broad spectra of the solar cell under operation can be analyzed as a superposition of interstitial and substitutional Fe components with different charge states. The charge states of Fe impurities are created by the excess carrier injection followed by a directional carrier flow in the p-n junction. The present results provide us a possibility to clarify the carrier trapping process at the Fe impurities in Si-solar cells.
Original language | English |
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Pages (from-to) | 133-137 |
Number of pages | 5 |
Journal | Hyperfine Interactions |
Volume | 204 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - Mar 1 2012 |
Externally published | Yes |
Keywords
- Carrier trapping
- Energy conversion efficiency
- Fe impurity
- Mn/ Fe implantation Mössbauer spectroscopy
- Si solar cell
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Condensed Matter Physics
- Physical and Theoretical Chemistry