Erschienen in:
Progress in Photovoltaics: Research and Applications, 31 (2023) 12, Seite 1235-1244
Sprache:
Englisch
DOI:
10.1002/pip.3635
ISSN:
1062-7995;
1099-159X
Entstehung:
Anmerkungen:
Beschreibung:
AbstractSilicon heterojunction (SHJ) solar cells can be formed using n‐type or p‐type silicon wafers. To foster the increasing industrial interest of SHJ, cheaper p‐type wafers with a good availability might be preferred, but until today, they yield lower cell efficiency compared with n‐type and show instabilities in the particular case of boron doping. This work shows that the production flow of high performance rear‐junction bifacial n‐type cells can be applied to front‐junction p‐type cells without process alterations and with a loss of efficiency as low as −0.3%abs provided that the wafer bulk lifetime is high enough. For this, we propose the use of wafers with gallium doping on which we obtained on a semi‐industrial pilot line SHJ p‐type cells mostly stable under moderated heat and light and with an efficiency closed to n‐type references. The best p‐type cell was externally certified at 24.47% total area.