High Efficiency Silver-Free Heterojunction Silicon Solar Cell
- 1 October 2012
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 51 (10S), 10NA04
- https://doi.org/10.1143/jjap.51.10na04
Abstract
In this work, we present the results of the replacement of silver screen printing on heterojunction crystalline silicon (c-Si) solar cells with a copper metallization scheme that has the potential to reduce the manufacturing cost while improving their performance. We report for the first time silver-free heterojunction c-Si solar cells on 6-in. wafers. The conversion efficiency reached is a record 22.1% for c-Si technology for this wafer size (V oc = 729 mV, J sc = 38.3 mA/cm2, FF= 79.1%). The total power generated is more than 5 W for 1-sun illumination, which is a world record. Heat-damp reliability tests show comparable performance for mini-modules fabricated with copper metalized as for conventional silver screen printed heterojunction c-Si solar cells.Keywords
This publication has 6 references indexed in Scilit:
- Quick Determination of Copper-Metallization Long-Term Impact on Silicon Solar CellsJournal of the Electrochemical Society, 2010
- High-Efficiency Crystalline Silicon Solar CellsAdvances in OptoElectronics, 2007
- New Method for Contact Patterning of High-Efficiency Solar Cells using a Mechanical ScriberJapanese Journal of Applied Physics, 2002
- Development of New a-Si/c-Si Heterojunction Solar Cells: ACJ-HIT (Artificially Constructed Junction-Heterojunction with Intrinsic Thin-Layer)Japanese Journal of Applied Physics, 1992
- Contact resistance: Its measurement and relative importance to power loss in a solar cellIEEE Transactions on Electron Devices, 1984
- Impurities in silicon solar cellsIEEE Transactions on Electron Devices, 1980