Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 14, Issue 4, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1088/1468-6996/14/4/045009
Keywords
transparent conducting oxides; oxide interfaces and composition; nanostructured powders; silicon solar cells
Categories
Funding
- QREN-Nano-SiPV [5610, 3454]
- European Commission [228144]
- ORAMA [246334]
- Portuguese Science Foundation (FCT-MCTES) [PEst-C/CTM/LA0025/2013-14]
- Nanomorph [PTDC/CTM/099719/2008, PTDC/CTM-MET/113486/2009]
- Fundação para a Ciência e a Tecnologia [PTDC/CTM/099719/2008] Funding Source: FCT
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We report the effect of a disperse carbon interlayer between the n-a-Si:H layer and an aluminium zinc oxide (AZO) back contact on the performance of amorphous silicon solar cells. Carbon was incorporated to the AZO film as revealed by x-ray photoelectron spectroscopy and energy-dispersive x-ray analysis. Solar cells fabricated on glass substrates using AZO in the back contact performed better when a disperse carbon interlayer was present in their structure. They exhibited an initial efficiency of 11%, open-circuit voltage V-oc = 1.6 V, short-circuit current J(SC) = 11mAcm(-2) and a filling factor of 63%, that is, a 10% increase in the J(SC) and 20% increase in the efficiency compared to a standard solar cell.
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