Abstract
The present disclosure relates to a method that includes depositing a spalling layer onto a surface that includes a substrate, depositing a device comprising a III-V material onto the spalling layer, resulting in the forming of a stack, and dividing the stack substantially at a plane positioned within the spalling layer to form a first portion that includes the substrate and a second portion that includes the PV device, where the spalling layer includes a first layer configured to provide a compressive stress and a second layer configured to provide a tensile stress, the first layer and the second layer form an interface, the dividing occurs as result of the interface, and the compressive stress and the tensile stress are strain-balanced so that a total strain within the spalling layer is approximately zero.
Original language | American English |
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Patent number | 11,658,258 B2 |
Filing date | 23/05/23 |
State | Published - 2023 |
NREL Publication Number
- NREL/PT-5900-86381
Keywords
- III-V material
- spalling layer
- substrate
- tensile stress