Synthesis of blue-shifted luminescent colloidal GaN nanocrystals through femtosecond pulsed laser ablation in organic solution

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dc.citation.epage10en_US
dc.citation.issueNumber128en_US
dc.citation.spage1en_US
dc.citation.volumeNumber18en_US
dc.contributor.authorDemirel, A.en_US
dc.contributor.authorÖztaş T.en_US
dc.contributor.authorKurşungöz, C.en_US
dc.contributor.authorYılmaz, İ.en_US
dc.contributor.authorOrtaç, B.en_US
dc.date.accessioned2018-04-12T10:57:02Z
dc.date.available2018-04-12T10:57:02Z
dc.date.issued2016-05en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractWe demonstrate the synthesis of GaN nanocrystals (NCs) with the sizes of less than the doubled exciton Bohr radius leading quantum confinement effects via a single-step technique. The generation of colloidal GaN nanoparticles (NPs) in organic solution through nanosecond (ns) and femtosecond (fs) pulsed laser ablation (PLA) of GaN powder was carried out. Ns PLA in ethanol and polymer matrix resulted in amorphous GaN-NPs with the size distribution of 12.4 ± 7.0 and 6.4 ± 2.3 nm, respectively, whereas fs PLA in ethanol produced colloidal GaN-NCs with spherical shape within 4.2 ± 1.9 nm particle size distribution. XRD and selected area electron diffraction analysis of the product via fs PLA revealed that GaN-NCs are in wurtzite structure. Moreover, X-ray photoelectron spectroscopy measurements also confirm the presence of GaN nanomaterials. The colloidal GaN-NCs solution exhibits strong blue shift in the absorption spectrum compared to that of the GaN-NPs via ns PLA in ethanol. Furthermore, the photoluminescence emission behavior of fs PLA-generated GaN-NCs in the 295–400 nm wavelength range is observed with a peak position located at 305 nm showing a strong blue shift with respect to the bulk GaN.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:57:02Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1007/s11051-016-3440-zen_US
dc.identifier.issn1388-0764
dc.identifier.urihttp://hdl.handle.net/11693/36904
dc.language.isoEnglishen_US
dc.publisherSpringer Netherlandsen_US
dc.relation.isversionofhttps://doi.org/10.1007/s11051-016-3440-zen_US
dc.source.titleJournal of Nanoparticle Researchen_US
dc.subjectFemtosecond/nanosecond pulsed laser ablation in organic solutionen_US
dc.subjectGallium nitride nanoparticlesen_US
dc.subjectPhotoluminescenceen_US
dc.subjectUltrasmall nanocrystal generationen_US
dc.subjectAblationen_US
dc.subjectAbsorption spectroscopyen_US
dc.subjectElectron diffractionen_US
dc.subjectEthanolen_US
dc.subjectGallium nitrideen_US
dc.subjectLaser ablationen_US
dc.subjectNanocrystalsen_US
dc.subjectNanoparticlesen_US
dc.subjectOrganic lasersen_US
dc.subjectParticle sizeen_US
dc.subjectParticle size analysisen_US
dc.subjectPhotoluminescenceen_US
dc.subjectSize distributionen_US
dc.subjectUltrafast lasersen_US
dc.subjectX ray photoelectron spectroscopyen_US
dc.subjectZinc sulfideen_US
dc.subjectExciton Bohr radiusen_US
dc.subjectFemtosecond pulsed laser ablationen_US
dc.subjectGallium nitride nanoparticlesen_US
dc.subjectOrganic solutionsen_US
dc.subjectPhotoluminescence emissionen_US
dc.subjectQuantum confinement effectsen_US
dc.subjectSelected area electron diffraction analysisen_US
dc.subjectUltra-smallen_US
dc.subjectPulsed lasersen_US
dc.subjectGallium nitride nanocrystalen_US
dc.subjectNanocrystalen_US
dc.subjectNanomaterialen_US
dc.subjectNanoparticleen_US
dc.subjectPolymeren_US
dc.subjectQuantum doten_US
dc.subjectUnclassified drugen_US
dc.subjectAnalytic methoden_US
dc.subjectArticleen_US
dc.subjectChemical modificationen_US
dc.subjectColloiden_US
dc.subjectCrystal structureen_US
dc.subjectElectron diffractionen_US
dc.subjectParticle sizeen_US
dc.subjectPhotoluminescenceen_US
dc.subjectPriority journalen_US
dc.subjectPulsed laser ablationen_US
dc.subjectX ray diffractionen_US
dc.subjectX ray photoelectron spectroscopyen_US
dc.titleSynthesis of blue-shifted luminescent colloidal GaN nanocrystals through femtosecond pulsed laser ablation in organic solutionen_US
dc.typeArticleen_US

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