Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-0-261700 |
Author: | Wilking, Svenja; Beckh, Cornelius; Ebert, Sebastian; Herguth, Axel; Hahn, Giso |
Year of publication: | 2014 |
Published in: | Solar Energy Materials and Solar Cells ; 131 (2014). - pp. 2-8. - ISSN 0927-0248. - eISSN 1879-3398 |
DOI (citable link): | https://dx.doi.org/10.1016/j.solmat.2014.06.027 |
Summary: |
Recombination active boron-oxygen related defects typically limit the efficiency of solar cells made from boron-doped, oxygen-rich silicon. This limitation can be overcome by applying a regeneration process that requires slightly elevated temperatures, carrier injection, and the presence of hydrogen in the silicon substrate in order to regenerate quickly and completely.
The influence of mid-temperature steps up to 400°C on the regeneration kinetics is investigated and the results can be explained with the efficacy of the regeneration process depending on the hydrogen bonding states prior to regeneration. Boron-hydrogen pairs are found to be good candidates to be the relevant hydrogen source during regeneration. The long-term stability of the regenerated state is tested under solar cell operating conditions, and the thermal activation energy of its destabilization is determined to be 1.25 ± 0.05 eV. Limiting factors for high-speed regeneration processes are discussed, and a high temperature / high illumination procedure is presented, allowing complete regeneration in less than 10 s. This makes regeneration feasible as an in-line process in solar cell production. |
Subject (DDC): | 530 Physics |
Keywords: | silicon, boron-oxygen, hydrogen, regeneration |
Link to License: | In Copyright |
Bibliography of Konstanz: | Yes |
WILKING, Svenja, Cornelius BECKH, Sebastian EBERT, Axel HERGUTH, Giso HAHN, 2014. Influence of bound hydrogen states on BO-regeneration kinetics and consequences for high-speed regeneration processes. In: Solar Energy Materials and Solar Cells. 131, pp. 2-8. ISSN 0927-0248. eISSN 1879-3398. Available under: doi: 10.1016/j.solmat.2014.06.027
@article{Wilking2014Influ-29450, title={Influence of bound hydrogen states on BO-regeneration kinetics and consequences for high-speed regeneration processes}, year={2014}, doi={10.1016/j.solmat.2014.06.027}, volume={131}, issn={0927-0248}, journal={Solar Energy Materials and Solar Cells}, pages={2--8}, author={Wilking, Svenja and Beckh, Cornelius and Ebert, Sebastian and Herguth, Axel and Hahn, Giso} }
Wilking_0-261700.pdf | 481 |