Dark current characterization of thin film copper (indium gallium) selenide solar cells
Abstract
Thin film technologies are one of the most promising new developments in the field of solar research. One such material is Cu(InGa)Se2 (CIGS). In this thesis, CIGS cells fabricated at NREL and Purdue are characterized and the results analyzed to develop a physical model of the cells. The goal of this thesis is to develop a series of accurate and efficient measurement techniques, which can extract material parameters from CIGS cells that can then be used in computer simulation. We will use the techniques of dark IV characterization and impedance spectroscopy to extract material parameters such as series and shunt resistance, carrier density, trap density, band gap and carrier lifetimes. We will then compare the different types of cells and attempt to build a physical model to explain their different behavior.
Degree
M.S.E.
Advisors
Lundstrom, Purdue University.
Subject Area
Electrical engineering
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