Abstract
The p-type Si layer in n-i-p a-Si and μc-Si solar cells on foil has several important requirements with respect to conductivity and optical transmission. We control the optical band gap and activation energy of p-a-SiC by varying the B2H6 and CH4 flows in the process chamber. Modelling shows that the optimum efficiency in n-i-p solar cells is obtained when the p-a-SiC band gap is just above the band gap of the absorber layer. We have assessed the potential of core-loss electron energy-loss spectroscopy (EELS) for detecting B and C and of low-loss EELS, in a spatially resolved manner, as probe of local variations in bulk plasmon energy. EELS in the transmission electron microscope (TEM) combines the necessary spatial resolution to investigate the boundary between p-a-SiC and i-a-Si with sufficient sensitivity to the boron content.
Original language | English |
---|---|
Title of host publication | EU PVSEC Proceedings |
Publication date | 2011 |
Pages | 2637-2640 |
ISBN (Print) | 3-936338-27-2 |
DOIs | |
Publication status | Published - 2011 |
Event | 26th European Photovoltaic Solar Energy Conference and Exhibition - Congress Center Hamburg, Hamburg, Germany Duration: 5 Sep 2011 → 9 Sep 2011 http://www.photovoltaic-conference.com/previous-eupvsec/26th-eu-pvsec.html |
Conference
Conference | 26th European Photovoltaic Solar Energy Conference and Exhibition |
---|---|
Location | Congress Center Hamburg |
Country/Territory | Germany |
City | Hamburg |
Period | 05/09/2011 → 09/09/2011 |
Internet address |