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Fabrication and performance of highly textured electrodeposited ZnO back reflector for nc-Si solar cells
Published online by Cambridge University Press: 21 March 2011
Abstract
To improve the cell efficiency of thin film solar cells textured back reflectors (BR) are widely used. This is particularly important in a-Si:H based solar cells due to low absorption coefficient at longer wavelengths. In this work we present a cost effective way to fabricate uniformly textured ZnO by using electrochemical methods. Further it was observed that Quantum Efficiency (QE) of shorter wavelengths also improved for highly textured ZnO BR. Together this resulted in more than 2mA increment in short circuit current density (Jsc) and 19% relative improvement in solar cell efficiency over sputter deposited BR. A possible mechanism responsible for the improved blue QE is also discussed.
- Type
- Research Article
- Information
- MRS Online Proceedings Library (OPL) , Volume 1123: Symposium P – Photovoltaic Materials and Manufacturing Issues , 2008 , 1123-P06-07-F07-07
- Copyright
- Copyright © Materials Research Society 2009