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Volumn 8, Issue 1, 2008, Pages 119-123

Nature of sub-band gap luminescent eigenmodes in a ZnO nanowire

Author keywords

[No Author keywords available]

Indexed keywords

BAND STRUCTURE; EIGENVALUES AND EIGENFUNCTIONS; ELECTRIC EXCITATION; EMISSION SPECTROSCOPY; LIGHT EMISSION; LUMINESCENCE; ZINC OXIDE;

EID: 38749153186     PISSN: 15306984     EISSN: None     Source Type: Journal    
DOI: 10.1021/nl0721867     Document Type: Article
Times cited : (105)

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    • We calculated the exciton polariton dispersion curve for a ZnO nanowire using ε(ω,k)=ε∞(1+Σ j=A,B,C Ωjfj/ω j,T2-ω2)=c 2(2k⊥2+k ∥2)/ω2 with the background dielectric constant εinfin; the speed of light in vacuum c, the oscillator strength, fj, which can be expressed by the transverse (ωj,T) and longitudinal (ωj,L) resonance frequencies (fj =ωj,L2- ωjTω2, a prefactor Ωj as defined in ref 20, and a factor Γ, which describes the enhancement of the oscillator strength. The resonant frequencies (for A, B, and C excitons) were taken as for a macroscopic ZnO crystal20 with
    • ⊥ = π/d as the wavevector perpendicular to the nanowire long axis (d is the nanowire diameter).


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