Ultra-thin semiconductor membrane nanotechnology based on surface charge lithography

Ion Tiginyanu; Veaceslav Popa; Marion A. Stevens-Kalceff

doi:10.1117/12.890125

3 May 2011 Ultra-thin semiconductor membrane nanotechnology based on surface charge lithography

Ion Tiginyanu, Veaceslav Popa, Marion A. Stevens-Kalceff

Proceedings Volume 8068, Bioelectronics, Biomedical, and Bioinspired Systems V; and Nanotechnology V; 806814 (2011) https://doi.org/10.1117/12.890125
Event: SPIE Microtechnologies, 2011, Prague, Czech Republic

Abstract

We show that by subjecting GaN epilayers on sapphire substrates to low-energy/low-dose ion treatment with subsequent photoelectrochemical etching it is possible to fabricate ultra-thin GaN membranes in the form of nano-roof hanging over networks of whiskers representing threading dislocations. The suspended membranes prove to be transparent to both UV-radiation and keV-energy electrons, their architecture being dependent upon the stirring conditions of the electrolyte during electrochemical etching. The obtained results are indicative of electrical conductivity, flexibility and excellent mechanical stability of ultra-thin GaN membranes characterized by prevailing yellow cathodoluminescence.

Citation Download Citation

Ion Tiginyanu, Veaceslav Popa, and Marion A. Stevens-Kalceff "Ultra-thin semiconductor membrane nanotechnology based on surface charge lithography", Proc. SPIE 8068, Bioelectronics, Biomedical, and Bioinspired Systems V; and Nanotechnology V, 806814 (3 May 2011); https://doi.org/10.1117/12.890125

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