Ali, A.; Ohrdes, T.; Wagner, H.; Altermatt, P.P.: Conceptual comparison between standard Si solar cells and back contacted cells. In: Energy Procedia 55 (2014), S. 11-16. DOI: https://doi.org/10.1016/j.egypro.2014.08.003
Zusammenfassung: | |
It is often stated that one of the main advantages of back-contacted (BC) Si solar cells over standard cells is that shading due to the front-finger metallization is avoided - while it is also often stated that BC cells are prone to "electronic shadowing", which means that the carrier collection efficiency in front of the back-surface-field (BSF) may be reduced. We compare these two cell concepts in two ways: by means of an extensive collection of measured IV data from literature, and by interpreting as well as quantifying the differences with the aid of numerical device simulation. Both literature data and simulations indicate that BC cells have a Jsc-advantage of maximally about 1 mA/cm2, but in Voc and FF there is no clear advantage or disadvantage over standard cells. With a parameter study, we reveal the main design advantages and weaknesses in each cell type. Our numerical device modeling indicates that one of the most crucial design advantages of BC over standard cells is that the collection of minority carriers in the emitter is rather unimportant, which leaves greater flexibility in emitter design than in standard cells. | |
Lizenzbestimmungen: | CC BY-NC-ND 3.0 Unported |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2014 |
Die Publikation erscheint in Sammlung(en): | Fakultät für Mathematik und Physik |
Pos. | Land | Downloads | ||
---|---|---|---|---|
Anzahl | Proz. | |||
1 | Germany | 98 | 58,68% | |
2 | United States | 34 | 20,36% | |
3 | China | 15 | 8,98% | |
4 | Russian Federation | 3 | 1,80% | |
5 | United Kingdom | 3 | 1,80% | |
6 | Vietnam | 2 | 1,20% | |
7 | France | 2 | 1,20% | |
8 | Czech Republic | 2 | 1,20% | |
9 | Kuwait | 1 | 0,60% | |
10 | Indonesia | 1 | 0,60% | |
andere | 6 | 3,59% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.