| Autor: |
Jung Kang, Sang, Jeon, Jin-Wan, Jae Baik, Seung, Su Lim, Koeng |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 10/7/2013, Vol. 103 Issue 15, p153903, 4p, 4 Graphs |
| Abstrakt: |
We report on drastic performance improvement by inserting amorphous tungsten oxide (WOx) with a wide optical band gap at the n-type amorphous silicon (n-a-Si)/zinc oxide (ZnO) back reflector interface in a-Si-based solar cells fabricated at 121 °C. We found that a 3-nm-thick WOx film could remarkably reduce the defect density at the n-a-Si/ZnO interface, resulting in decreased series and increased shunt resistances. Consequently, the fill factor and conversion efficiency could be markedly enhanced by 8.6% and 9.2%, respectively. A maximum efficiency of 8.05% was obtained. This technique may be applied to all kinds of thin-film solar cells. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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