Effect of gold nanoparticles size on light scattering for thin film amorphous-silicon solar cells

Date
2014-05
Advisor
Instructor
Source Title
Solar Energy
Print ISSN
0038-092X
Electronic ISSN
Publisher
Elsevier Ltd
Volume
103
Issue
Pages
263 - 268
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

In this work, the effect of gold (Au) nanoparticles on the performance of a-Si:H solar cells is investigated experimentally. The solar cell stack is grown on a highly doped p-type Si wafer and consists of 20nm heavily doped p-type a-Si, 500nm undoped a-Si, 20nm heavily doped n-type a-Si and finally 80nm Indium Tin Oxide (ITO) on the top. Au nanoparticles of 10, 20, 50, 80, 100, 200 and 400nm are spin coated on top of the ITO before metallization. The plasmonic effect of the Au nanoparticles allows for additional scattering at the surface thus reducing the overall reflectivity. The larger the nanoparticle size the more scattering is obtained and the median reflectivity drops from about 23% to 18%. The results show an increase in the short-circuit current density (Jsc) and efficiency with increasing nanoparticle size. The Jsc increases from 9.34 to 10.1mA/cm2. In addition, the efficiency increases from 4.28% to 5.01%. © 2014 Elsevier Ltd.

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Other identifiers
Book Title
Keywords
Nanoparticles, Photovoltaics, Plasmonics, Thin film, Solar cells, Amorphous Si
Citation
Published Version (Please cite this version)