Title :
Enhancing the efficiency of CdTe solar cells using a nanocrystalline iron pyrite film as an interface layer
Author :
Khagendra P. Bhandari;Paul J. Roland;Prakash Koirala;Rajendra R. Khanal;Naba R. Paudel;Robert Collins;Yanfa Yan;Michael J. Heben;Randy J. Ellingson
Author_Institution :
Wright Center for Photovoltaic Innovation and Commercialization, Department of Physics and Astronomy, The University of Toledo, 2801 Bancroft Street, OH 43606, USA
fDate :
6/1/2015 12:00:00 AM
Abstract :
We use thin film nanocrystalline (NC) iron pyrite as an interface layer at the back contact of CdS/CdTe solar cells. In both spattered and CSS deposited CdTe devices, improvements in Voc and FF were obtained after the inclusion of the NC FeS2 layer. Repeated tests show that Voc increases by >30 mV and FF increases by ~3.5% for a standard CdTe device having efficiency of ~13%. The devices tested at STC show a relative increase in the power conversion efficiency in the range of 5% to 9%.
Keywords :
"II-VI semiconductor materials","Cadmium compounds","Performance evaluation","Standards","Voltage measurement","Semiconductor device measurement","Photovoltaic cells"
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd
DOI :
10.1109/PVSC.2015.7356104
