However, it has been limited to fabricate highly efficient n-on-p single-junction GaAs thin film solar cell on a flexible substrate due to technical obstacles. We investigated a simple and fast epitaxial lift-off (ELO) method that uses a stress originating from a Cr/Au bilayer on a 125-...
junction cells in the so-called substrate configuration. The design criterion of single-junction cells is expected to be ap- plicable to the triple-junction cells, as approximately 90% of the total thickness is occupied by the middle and bottom lc- ...