Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1872
Full metadata record
DC FieldValueLanguage
dc.contributor.authorThakur, Varun
dc.contributor.authorSiddhanta, Soumik
dc.contributor.authorNarayana, Chandrabhas
dc.contributor.authorShivaprasad, S. M.
dc.date.accessioned2016-10-18T04:48:44Z-
dc.date.available2016-10-18T04:48:44Z-
dc.date.issued2015
dc.identifier.citationRSC Advancesen_US
dc.identifier.citation5en_US
dc.identifier.citation129en_US
dc.identifier.citationThakur, V.; Siddhanta, S.; Narayana, C.; Shivaprasad, S. M., Size and distribution control of surface plasmon enhanced photoluminescence and SERS signal in Ag-GaN hybrid systems. RSC Advances 2015, 5 (129), 106832-106837.en_US
dc.identifier.issn2046-2069
dc.identifier.urihttp://hdl.handle.net/10572/1872-
dc.descriptionRestricted accessen_US
dc.description.abstractIn the present experiment, two GaN nanowall network (NWN) samples with different porosity were grown on c-sapphire substrates using plasma assisted molecular beam epitaxy (PA-MBE). Ag nanoparticles were deposited on both the samples using a physical vapour deposition (PVD) system. Annealing the samples at different temperatures resulted in a change in Ag nanoparticle size due to diffusion and Ostwald ripening which had significant effect on the photoluminescence and SERS activity of GaN NWN. It was observed that the photoluminescence yield increased by more than five times in both cases at 200 degrees C. The SERS activity for thiophenol is higher in the as-deposited case for the sample with higher porosity, but after annealing to 200 degrees C the activity increased for the sample with lower porosity. It is also interesting to observe that the sample with higher porosity shows SERS signals even after being annealed to higher temperatures. Studies are also done for other analytes such as R6G and BSA. The results are discussed in terms of plasmonic effects of Ag nanoparticles on the excitonic emission from the GaN surface, which is also simulated using 2D-FDTD simulations.en_US
dc.description.urihttp://dx.doi.org/10.1039/c5ra24906fen_US
dc.languageEnglishen
dc.language.isoEnglishen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rights?Royal Society of Chemistry, 2015en_US
dc.subjectChemistryen_US
dc.subjectRaman-Spectroscopyen_US
dc.subjectNanowall Networken_US
dc.subjectScatteringen_US
dc.subjectSubstrateen_US
dc.subjectProteinsen_US
dc.subjectLuminescenceen_US
dc.subjectNanowiresen_US
dc.subjectMoleculesen_US
dc.subjectResonanceen_US
dc.titleSize and distribution control of surface plasmon enhanced photoluminescence and SERS signal in Ag-GaN hybrid systemsen_US
dc.typeArticleen_US
Appears in Collections:Research Articles (Chandrabhas N.)

Files in This Item:
File Description SizeFormat 
50.pdf1.59 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.