2006
DOI: 10.1063/1.2200155
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Synthesis of wurtzite ZnSe nanorings by thermal evaporation

Abstract: In this study, free standing crystalline ZnSe nanorings and nanowires have been fabricated on Au coated Si substrates by simple thermal evaporation of ZnSe powders. Ring-or wirelike morphology can be achieved in a controllable manner by using different reactor pressures during growth, while all the other conditions remain the same. Our results show that the ZnSe nanorings are wurtzite phase instead of the zinc-blende phase, observed in typical one-dimensional ZnSe nanostructures. The growth mechanism of the na… Show more

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Cited by 53 publications
(53 citation statements)
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“…[30][31][32] Following a similar explanation, wurtzite ZnSe nanorings have been synthesized by Leung et al, with dominant {0001} polar surfaces exposed. 7 However, this mechanism relies crucially on the existence of a large polar surface and is obviously not applicable to the as-grown samples here, since the dominant surfaces are nonpolar ((01 j 1). Screw dislocations have also been introduced to explain the formation of helical -Ga 2 O 3 nanowires 33 and SiC/SiO 2 core-shell nanowires.…”
Section: Formation Of Nanospirals With In-plane Bending Mediated By Lmentioning
confidence: 99%
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“…[30][31][32] Following a similar explanation, wurtzite ZnSe nanorings have been synthesized by Leung et al, with dominant {0001} polar surfaces exposed. 7 However, this mechanism relies crucially on the existence of a large polar surface and is obviously not applicable to the as-grown samples here, since the dominant surfaces are nonpolar ((01 j 1). Screw dislocations have also been introduced to explain the formation of helical -Ga 2 O 3 nanowires 33 and SiC/SiO 2 core-shell nanowires.…”
Section: Formation Of Nanospirals With In-plane Bending Mediated By Lmentioning
confidence: 99%
“…For example, using the thermal evaporation method, pressure-controlled syntheses of ZnSe nanowires and nanorings can be separately achieved. 7 In contrast to the one-stage syntheses, two-stage fabrications are generally accompanied by variations (i.e., compositions, temperature, and reaction pressure) and thus offer more flexibility in combining different materials and allow separate controls over each material in the single stage. Novel {113} twinned ZnSe bicrystal nanobelts filled with 〈111〉 twinnings 11 and side-by-side ZnSe/ZnCdSe bicrystalline nanoribbons 12 have been successfully synthesized through this method.…”
Section: Introductionmentioning
confidence: 99%
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“…ZnSe, a direct band gap (2.8 eV) II-VI semiconductor with large exciton binding energy (21 meV), has been investigated for potential applications in optoelectronic devices such as light emitting diodes and laser diodes (Katayama et al 1998). ZnSe nanostructures with different morphologies such as wires, belts, rods and tetrapods have been synthesized by different techniques such as vapor transport, metal-organic chemical vapor deposition (MOCVD), molecular beam epitaxy (MBE) and solution growth (Ye et al 2004;Leung et al 2006;Shan et al 2006;Cai et al 2006;Mazher et al 2004). Among these techniques, vapor transport technique is more popular due to its simplicity in growing single crystalline nanostructures with different morphologies (Ye et al 2004;Leung et al 2006).…”
Section: Introductionmentioning
confidence: 99%
“…Fluorescent nanomaterials have been the subject of intensive research in recent years for their vast applications ranging from biomedical therapeutics and diagnostics to information storage and optoelectronics [1][2][3]. For fluorescence based applications, fluorescence efficiency, i.e.…”
Section: Introductionmentioning
confidence: 99%