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An epitaxial lift‐off (ELO) process for GaN materials has been demonstrated using bandgap‐selective photoenhanced wet etching of an InGaN release layer. This process has been applied to GaN layers grown on sapphire as well as native GaN substrates using a perforation technique to scale the process up to wafers of arbitrary size. The process has the advantage of leveraging conventional MOCVD growth...
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