Poornima,N; Dr.Sudha Kartha,C(Cochin University Of Science And Technology, November , 2013)
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Abstract:
Photoluminescence (PL) spectroscopy is an optical technique that has
emerged successful in the field of semiconductor material and device
characterization. This technique is quite a powerful one which gives idea about
the defect levels in a material, the band gap of the material, composition as well
as material quality. Over the recent years it has received an elevation as a
mainstream characterization technique.
This thesis is an attempt to characterize each individual layer used in a thin
film solar cell with special focus on the electrical properties. This will be highly
beneficial from the lab as well as industrial point of view because electrical
measurements generally are contact mode measurements which tend to damage
the surface. As far as a thin film solar cell is concerned, the constituent layers are
the transparent conducting oxide (TCO), absorber layer, buffer layer and top
electrode contact. Each layer has a specific role to play and the performance of a
solar cell is decided and limited by the quality of each individual layer. Various
aspects of PL spectroscopy have been employed for studying compound
semiconductor thin films [deposited using chemical spray pyrolysis (CSP)]
proposed for solar cell application. This thesis has been structured in to seven
chapters
Description:
Applied Optics Division,
Department of Physics,
Cochin University of Science and Technology