Assessment and Application of Defect Characterization via Lifetime Spectroscopy in High Purity C-Si
Solare Energie- und Systemforschung / Solar Energy and Systems Research
Regina Post
Hrsg.: Fraunhofer ISE, Freiburg
2023, 174 S., num., mostly col. illus. and tab., Softcover
Sprache: Englisch
Konstanz, Univ., Diss., 2022
Fraunhofer Verlag
ISBN 978-3-8396-1917-9

Inhalt
The performance limit of monocrystalline silicon solar cells is almost reached. Only marginal effects are limiting the excess carrier lifetime of nowadays used materials. Nonetheless it is interesting to investigate and characterize the limiting effects to improve the performance even further and to deepen the understanding, enabling new approaches and novel cell structures.
This thesis tries to characterize limiting defect in high standard Gallium doped silicon via lifetime spectroscopy. To assess the validity of the results, the limits of this commonly used method (lifetime spectroscopy) are analyzed by evaluation of simulated lifetime data. Further, a guideline for future lifetime evaluations is given which can improve the outcome of the complex evaluation and helps differentiate between bulk and surface effects.

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