摘要
Ultrawide ZnSe nanoribbons are synthesized by the simple thermal evaporation.The microstructure of ZnSe nanoribbons is characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),high-resolution TEM(HRTEM),photoluminescence(PL) and Raman spectrum.It is found that the strong emission near the band gap of ZnSe centered at 460 nm is obtained in these nanoribbons.More importantly,ZnSe nanoribbons can act as lasing emitting optical cavities.Raman studies indicate that the longitudinal optic(LO) and transverse optic(TO) phonon confinements of the ZnSe nanoribbons shift to lower frequency.
Ultrawide ZnSe nanoribbons are synthesized by the simple thermal evaporation.The microstructure of ZnSe nanoribbons is characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,high-resolution TEM（HRTEM）,photoluminescence（PL） and Raman spectrum.It is found that the strong emission near the band gap of ZnSe centered at 460 nm is obtained in these nanoribbons.More importantly,ZnSe nanoribbons can act as lasing emitting optical cavities.Raman studies indicate that the longitudinal optic（LO） and transverse optic（TO） phonon confinements of the ZnSe nanoribbons shift to lower frequency.
基金
supported by the National Natural Science Foundation of China (No. 10764005)
the Natural Science Foundation of Yunnan Province (Nos. 06A0025Q and 2007PY01-41)
the Educational Council of Yunnan Province (Nos. 5Z0098A and 06Y091)
the Excellent Talent Supporting Project in the New Century of Chinese Education Ministry (No. NCET-08-0926)
