Strong ultraviolet emission from SiO[sub 2]/LiNbO[sub 3](:Fe)/SiO[sub 2] structures

Yang, X.; Wu, X. L.; Xue, W. W.; Huang, G. S.; Siu, G. G.; Dong, Z. G.; Fang, L.; Shen, M. R.
June 2003
Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4456
Academic Journal
SiO[SUB2]/LiNbO[SUB3](LN)/SiO[SUB2] sandwich structures were fabricated for exploring efficient light emission. After annealing at 1000 °C in O[SUB2] for 30 min, this kind of sandwich structure shows a strong ultraviolet photoluminescence (PL) with an asymmetric spectral shape. This PL spectrum may be Gaussian divided into two bands peaked at 310 (α-band) and 346 nm (β-band). If the layer of LN film is replaced by an Fe-doped LN (LN:Fe) one, the β-band vanishes and the α-band redshifts. The α-band is greatly enhanced and simultaneously becomes asymmetrical after this kind of SiO[SUB2]/LN:Fe/SiO[SUB2] structure is annealed for 60 min. Spectral analysis suggests that the α-band arises from an optical transition in positively charged E8 centers at the interfaces between the LN(:Fe) film and the two SiO[SUB2] layers, while the β-band arises from intrinsic defects in the LN(:Fe) films. The mechanism for the PL enhancement is discussed in terms of a photorefractive effect in the LN(:Fe) films.


Related Articles

  • Growth and annealing of CdZnTe:Cl crystals with different content of Zn for nuclear detectors. Zelenina, N. K.; Karpenko, V. P.; Matveev, O. A.; Sedov, V. E.; Terentyev, A. I.; Tomasov, A. A. // Semiconductors;Oct2009, Vol. 43 Issue 10, p1379 

    The methods of photoluminescence, Hall effect, extrinsic photoconductivity, and transit time have been used to study the influence of the pressure of cadmium vapor ( PCd) in the course of postgrowth annealing of ingots and annealing of semi-insulating crystals Cd1 − xZn xTe:Cl ( x = 0.005,...

  • UV—blue photoluminescence from ZrO2 nanopowders prepared via glycine nitrate process. Wang, Z.; Yang, B.; Fu, Z.; Dong, W.; Yang, Y.; Liu, W. // Applied Physics A: Materials Science & Processing;Sep2005, Vol. 81 Issue 4, p691 

    ZrO2 nanopowders were synthesized by a glycine nitrate process route. These nanopowders exhibit a tetragonal major phase in a broad range of annealing temperature and annealing time. The photoluminescence spectra of the samples consist of a UV band centered at 385 nm and a blue band centered at...

  • Sequential UV annealing of dielectrics. E. K. // Solid State Technology;Jan2006, Vol. 49 Issue 1, p24 

    The article reports on the findings of Novellus Systems Inc. concerning the process of sequential ultraviolet (UV) annealing of dielectrics. Novellus Systems Inc. has come up with a new UV thermal processing platform blended with industry-standard lamp-based UV light sources together with its...

  • Low-temperature GaN growth on silicon substrates by single gas-source epitaxy and photo-excitation. Trivedi, R. A.; Tolle, J.; Chizmeshya, A. V. G.; Roucka, R.; Ritter, Cole; Kouvetakis, J.; Tsong, I. S. T. // Applied Physics Letters;8/15/2005, Vol. 87 Issue 7, p072107 

    We report a unique low-temperature growth method for epitaxial GaN on Si(111) substrates via a ZrB2(0001) buffer layer. The method utilizes the decomposition of a single gas-source precursor (D2GaN3)3 on the substrate surface to form GaN. The film growth process is further promoted by...

  • Identification of zinc and oxygen vacancy states in nonpolar ZnO single crystal using polarized photoluminescence. Liu, J.; Zhao, Y.; Jiang, Y. J.; Lee, C. M.; Liu, Y. L.; Siu, G. G. // Applied Physics Letters;12/6/2010, Vol. 97 Issue 23, p231907 

    Polarized photoluminescence spectra of the nonpolar ZnO single crystals annealed at different temperatures in air were investigated, for which the whole emission spectra from visible up to ultraviolet range for zinc and oxygen defects states are taken separately via the parallel and the crossed...

  • Strongly Colored Pink CVD Lab-Grown Diamonds. Wuyi Wang; Doering, Patrick; Tower, Joshua; Lu, Ren; Eaton-Magaña, Sally; Johnson, Paul; Emerson, Erica; Moses, Thomas M. // Gems & Gemology;Spring2010, Vol. 46 Issue 1, p4 

    This study characterizes CVD laboratory-grown diamonds from Apollo Diamond Inc. that have strong pink colors produced by high concentrations of NV centers. The samples examined weighed ~0.3-0.7 ct, and their color and clarity grades were comparable to top natural pink diamonds. A combination of...

  • Treated Pink Type IIa Diamond Colored by Red Luminescence. Eaton-Magaña, Sally // Gems & Gemology;Fall2016, Vol. 52 Issue 3, p299 

    The article offers information about color origin determination of treated pink type IIa diamond by red luminescence. It discusses long-wave ultraviolet light exposure of the diamond and the results of photoluminescence spectroscopy identifying the stone as a treated diamond that had been...

  • Degrees of visible determinism in crystal growth striations as a measure of crystal quality. Miyano, Takaya; Morita, Hiroshi; Shintani, Akira; Kanda, Tadashi // Applied Physics Letters;7/1/1996, Vol. 69 Issue 1, p43 

    A diagnostic test based on the parallelism of neighboring trajectories generated from a time series in phase space for visible determinism is applied to characterizing complexities in growth striations of Czochralski silicon crystals. Change in the structure of the striations by crystal...

  • A neutron backscattering study of lattice deformations in silicon due to SiO2 precipitation. Magerl, A.; Schneider, J. R.; Zulehner, W. // Journal of Applied Physics;1/1/1990, Vol. 67 Issue 1, p533 

    Deals with a study which investigated the annealing of Czochralski-grown dislocation free silicon crystals for times varying between 20 and 216 h. Factors that open new possibilities for investigations of oxygen precipitation in silicon crystals; Area in which Czochralski-grown dislocation-free...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics