PDA(Polydiacetylene)-supramolecules were successfully immobilized on the surface of Sc 2O 3/GaN/Sap-phire structures for use as selective NH 3 gas sensors. The Sc 2O 3 was epitaxially grown on GaN/Sapphire templates by molecular beam epitaxy (MBE) to replace the non-uniform native Ga 2O 3. The GaN-based PDA gas sensors showed excellent selectivity for ammonia detection after the end-functional group was modified to respond to this specific gas species.
|Number of pages||6|
|Journal||Physica Status Solidi (A) Applications and Materials Science|
|Publication status||Published - 2007 Oct 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Surfaces, Coatings and Films