NANOPOROUS GALLIUM NITRIDE THROUGH ANISOTROPIC METAL-ASSISTED ELECTROLESS PHOTOCHEMICAL WET ETCHING TECHNIQUE

R. Perumal and Z. Hassan
Additional contact information
R. Perumal: Institute of Nano-Optoelectronics Research and Technology Laboratory (INOR), School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia
Z. Hassan: Institute of Nano-Optoelectronics Research and Technology Laboratory (INOR), School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia

Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-6

Abstract: Nanoporous gallium nitride (GaN) has many potential applications in light-emitting diodes (LEDs), photovoltaics, templates and chemical sensors. This article reports the porosification of GaN through UV enhanced metal-assisted electroless photochemical wet etching technique using three different acid-based etchants and platinum served as catalyst for porosification. The etching process was conducted at room temperature for a duration of 90min. The morphological, structural, spectral and optical features of the developed porous GaN were studied with appropriate characterization techniques and the obtained results were presented. Field emission scanning electron micrographs exhibited the porosity nature along with excellent porous network of the etched samples. Structural studies confirmed the mono crystalline quality of the porous nanostructures. Raman spectral analyzes inferred the presenting phonon modes such as E2 (TO) and A1 (LO) in fabricated nanoporous structures. The resulted porous nanostructures hold the substantially enhanced photoluminescence intensity compared with the pristine GaN epitaxial film that is interesting and desirable for several advances in the applications of Nano-optoelectronic devices.

Keywords: GaN; porosity; electrolyte; Raman spectroscopy and photoluminescence (search for similar items in EconPapers)
Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X15501061
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:23:y:2016:i:02:n:s0218625x15501061

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X15501061

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().