Design of Multi-junction Solar Cells on Silicon Substrates Using a Porous Silicon Compliant Membrane

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Title: Design of Multi-junction Solar Cells on Silicon Substrates Using a Porous Silicon Compliant Membrane
Authors: Wilkins, Matthew M.
Date: 2013
Abstract: A novel approach to the design of multi-junction solar cells on silicon substrates for 1-sun applications is described. Models for device simulation including porous silicon layers are presented. A silicon bottom subcell is formed by diffusion of dopants into a silicon wafer. The top of the wafer is porosified to create a compliant layer, and a III-V buffer layer is then grown epitaxially, followed by middle and top subcells. Due to the resistivity of the porous material, these designs are best suited to high efficiency 1-sun applications. Numerical simulations of a multi-junction solar cell incorporating a porous silicon compliant membrane indicate an efficiency of 30.7% under AM1.5G, 1-sun for low threading dislocation densities (TDD), decreasing to 23.7% for a TDD of 10^7 cm^-2.
URL: http://hdl.handle.net/10393/24096
http://dx.doi.org/10.20381/ruor-2978
CollectionThèses, 2011 - // Theses, 2011 -
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