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Title: Fabrication of thin-film electronic devices with non-destructive wafer reuse

Patent ·
OSTI ID:1632442

Thin-film electronic devices such as LED devices and field effect transistor devices are fabricated using a non-destructive epitaxial lift-off technique that allows indefinite reuse of a growth substrate. The method includes providing an epitaxial protective layer on the growth substrate and a sacrificial release layer between the protective layer and an active device layer. After the device layer is released from the growth substrate, the protective layer is selectively etched to provide a newly exposed surface suitable for epitaxial growth of another device layer. The entire thickness of the growth substrate is preserved, enabling continued reuse. Inorganic thin-film device layers can be transferred to a flexible secondary substrate, enabling formation of curved inorganic optoelectronic devices.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0001013
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Number(s):
10,535,685
Application Number:
15/101,287
OSTI ID:
1632442
Resource Relation:
Patent File Date: 12/02/2014
Country of Publication:
United States
Language:
English

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