TITLE

Bidirectional direct-current electroluminescence from i-MgxZn1-xO/n-ZnO/SiOx double-barrier heterostructures on Si

AUTHOR(S)
Peiliang Chen; Xiangyang Ma; Dongsheng Li; Yuanyuan Zhang; Deren Yang
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report bidirectional direct-current electroluminescence (EL) from i-MgxZn1-xO/n-ZnO/SiOx double-barrier heterostructures on Si. When the heterostructure-based device is forward biased with negative voltage applied on Si, ultraviolet (UV) emission is more intense than visible emissions. The visible emissions appear only at sufficiently high currents. As the device is reverse biased, the visible emissions dominate the EL at low currents. However, they are gradually overridden by the UV emission with increasing current. The EL mechanism has been discussed in terms of energy band structures of the device under forward and reverse biases.
ACCESSION #
36609542

 

Related Articles

  • Spectral broadening in electroluminescence of white organic light-emitting diodes based on complementary colors. Young Min Kim; Young Wook Park; Jin Hwan Choi; Byeong Kwon Ju; Jae Hoon Jung; Jai Kyeong Kim // Applied Physics Letters;1/15/2007, Vol. 90 Issue 3, p033506 

    The authors report the optical and electroluminescent (EL) properties of white organic light-emitting diodes (OLEDs) which have two emitters with similar structures: 1, 1, 4, 4-tetraphenyl-1, 3-butadiene and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline have an emission peak of 400 nm around the...

  • Impact-ionization-stimulated electroluminescence in isotype n-GaSb/ n-AlGaAsSb/ n-GaInAsSb heterostructures. Bazhenov, N. L.; Zhurtanov, B. E.; Mynbaev, K. D.; Astakhova, A. P.; Imenkov, A. N.; Mikhaĭlova, M. P.; Smirnov, V. A.; Stoyanov, N. D.; Yakovlev, Yu. P. // Technical Physics Letters;Dec2007, Vol. 33 Issue 12, p987 

    We have studied electroluminescence in n-GaSb/ n-AlGaAsSb/ n-GaInAsSb heterostructures with isotype heterojunctions, in which the quantum efficiency of emission is increased due to the additional production of electron-hole pairs as a result of the impact ionization that takes place near the...

  • Retrieval of aerosol single scattering albedo at ultraviolet wavelengths at the T1 site during MILAGRO. Corr, C. A.; Krotkov, N.; Madronich, S.; Slusser, J. R.; Holben, B.; Gao, W.; Flynn, J.; Lefer, B.; Kreidenweis, S. M. // Atmospheric Chemistry & Physics;2009, Vol. 9 Issue 15, p5813 

    Surface measurements of direct and diffuse voltages at UV wavelengths were made at the T1 site during the MILAGRO (Megacity Initiative: Local and Global Research Observations) field campaign in March 2006, using a multifilter rotating shadowband radiometer (UV-MFRSR). We used the MFRSR data,...

  • Observation of ultraviolet emission and effect of surface states on the luminescence from tin oxide nanowires. Kar, Ayan; Stroscio, Michael A.; Dutta, Mitra; Kumari, Jyoti; Meyyappan, M. // Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG 

    Ultraviolet (UV) and orange emissions have been observed from vapor-liquid-solid grown SnO2 nanowires. From the luminescence, the donor and acceptor binding energies have been estimated. The dependence of the orange luminescence on the diameters of tin oxide nanowires has been observed and the...

  • Green Photoluminescence in ZnO Nanostructures. Djurišić, A. B.; Leung, Y. H.; Liu, Z. T.; Li, D.; Xie, M. H.; Choy, W. C. H.; Cheah, K. W. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p889 

    In photoluminescence (PL) spectrum of ZnO, typically one or more peaks in the visible spectral range due to defect emission can be observed in addition to one UV peak due to band edge emission. The origin of the defect emission is controversial and several mechanisms have been proposed. In this...

  • Observation of an ultraviolet emission band in TiO2 nanocrystals doped with Eu3+. Zeng, Q. G.; Ding, Z. J.; Zhang, Z. M. // Journal of Materials Science;Jun2007, Vol. 42 Issue 11, p3778 

    The photoluminescence spectra of titanium dioxide (TiO2) nanocrystals doped with Eu3+ (molar ratio Eu3+/TiO2 = 0, 1, 2, 4%) are investigated under different excitation wavelengths. An ultraviolet band of emission energy higher than the energy gap is found for excitation wavelengths larger than...

  • Luminescent properties of Sr5(PO4)3 Cl:Eu2+, Mn2+ as a potential phosphor for UV-LED-based white LEDs. Guo, C.; Luan, L.; Ding, X.; Zhang, F.; Shi, F. G.; Gao, F.; Liang, L. // Applied Physics B: Lasers & Optics;Jun2009, Vol. 95 Issue 4, p779 

    Eu2+ and Mn2+ co-activated Sr5(PO4)3Cl phosphors with blue and orange color double emission bands, under a broad-band excitation wavelength range of 340–400 nm, were synthesized by the solid-state reaction. It was found that the processing parameters, including the fluxes, annealing time...

  • Response of vehicular emissions to air pollution and radiation - A case study during public strike in Hyderabad, India. Mahalakshmi, Dangeti Venkata; Sujatha, Peethani; Naidu, Chennu Venkateswara; Chowdary, Vemuri Muthayya // Sustainable Environment Research;2015, Vol. 25 Issue 4, p227 

    The scope of the present study is to analyse the variations in aerosol optical properties due to absence of vehicle emissions alone and its influence on global solar and the erythemal UV (UVerythemal) radiation over the urban region of Hyderabad, India. In this context, systematic measurements...

  • Method of determining photobiological safety of contemporary light sources. Pawlak, Andrzej // Scientific Journals of The Maritime University of Szczecin, Zesz;2015, Vol. 115 Issue 43, p29 

    The article presents a method of evaluating irradiance, spectral irradiance, and spectral radiance, for purposes of determining risk groups of sources of light. The description of the method of measurement of radiance incorporates standard and alternative methods. Measurement methods were...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics