Results 21 to 30 of about 212,527 (305)

Effects of Inclined Sidewall Structure With Bottom Metal Air Cavity on the Light Extraction Efficiency for AlGaN-Based Deep Ultraviolet Light-Emitting Diodes

IEEE Photonics Journal, 2017
An inclined sidewall scattering structure with air cavity characterized by a metal bottom and flat parallel top (Bottom_metal) is proposed to enhance the light extraction efficiency (LEE) for AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs).
Yonghui Zhang, Ruilin Meng, Zi-Hui Zhang, Qiang Shi, Luping Li, Guoxu Liu, Wengang Bi   +6 more
doaj   +1 more source

V-doped TiO2(110) : quantitative structure determination using energy scanned photoelectron diffraction [PDF]

, 2014
The surface structure of a novel vanadium-titanium dioxide epitaxial film (Ti1-xVxO2, x ~ 0.2) has been explored using V4+ 2p and Ti4+ 2p energy-scanned photoelectron diffraction (PhD).
Karslıoğlu, O., Kreikemeyer Lorenzo, D., Woodruff, D. P., Duncan, D. A., Kuhlenbeck, H., Unterberger, W. (Werner), Duncan, D., Naschitzki, M., Kreikemeyer-Lorenzo, D., Karslioğlu, O., Unterberger, W., Woodruff, D., Primorac, E., Duncan, David A.   +13 more
core   +1 more source

Photoelectron-Photofragment Coincidence Spectroscopy With Ions Prepared in a Cryogenic Octopole Accumulation Trap: Collisional Excitation and Buffer Gas Cooling

Frontiers in Chemistry, 2019
A cryogenic octopole accumulation trap (COAT) has been coupled to a photoelectron-photofragment coincidence (PPC) spectrometer allowing for improved control over anion vibrational excitation.
Ben B. Shen, Katharine G. Lunny, Yanice Benitez, Robert E. Continetti   +3 more
doaj   +1 more source

Photoelectron pitch angle distribution near Mars and implications on cross terminator magnetic field connectivity

Earth and Planetary Physics, 2020
The photoelectron peak at 22–27 eV, a distinctive feature of the energetic electron distribution in the dayside Martian ionosphere, is a useful diagnostic of solar extreme ultraviolet (EUV) and X-ray ionization as well as of large-scale transport along ...
YuTian Cao, Jun Cui, XiaoShu Wu, JiaHao Zhong   +3 more
doaj   +1 more source

A new method of calculation of Franck-Condon factors which includes allowance for anharmonicity and the Duschinsky effect: Simulation of the HeI photoelectron spectrum of ClO2 [PDF]

, 2000
A new method of Franck-Condon (FC) factor calculation for nonlinear polyatomics, which includes anharmonicity and Duschinsky rotation, is reported. Watson's Hamiltonian is employed in this method with multidimensional ab initio potential energy functions.
Chau, F. T., DeChao Wang, Wang, D. C., Edmond P. F. Lee, Dyke, J. M., Mok, D. K. W., Wang, D, John M. Dyke, Mok, DKW, Lee, E. P. F., Lee, EPF, Foo-Tim Chau, Chau, FT, Dyke, JM, Daniel K. W. Mok   +14 more
core   +1 more source

Facile synthesis of tin monosulfide nanosheets via physical vapour deposition and their near-infrared photoresponse

AIP Advances, 2019
Two-dimensional layered materials (TDLMs), such as tin sulfide (SnS2), have attracted significant attention due to their vast potential applications in the fields of electronics, optoelectronics, energy conversion, and storage.
Shuo Yuan, Gangzha Liu, He Tian, Chao Fan, Mengjun Wang, Erping Li   +5 more
doaj   +1 more source

Photoelectron balance in the dayside Martian upper atmosphere

Earth and Planetary Physics, 2019
Photoelectrons are produced by solar Extreme Ultraviolet radiation and contribute significantly to the local ionization and heat balances in planetary upper atmospheres. When the effect of transport is negligible, the photoelectron energy distribution is
XiaoShu Wu, Jun Cui, Jiang Yu, LiJuan Liu, ZhenJun Zhou   +4 more
doaj   +1 more source

Response of photoelectron peaks in the Martian ionosphere to solar EUV/X-ray irradiance

Earth and Planetary Physics, 2020
An important population of the dayside Martian ionosphere are photoelectrons that are produced by solar Extreme Ultraviolet and X-ray ionization of atmospheric neutrals.
XiaoShu Wu, Jun Cui, YuTian Cao, WeiQin Sun, Qiong Luo, BinBin Ni   +5 more
doaj   +1 more source

Analysis of autoionization resonances in the Hg 6s2-photoionization by measurements of photoelectron polarization [PDF]

, 1982
Schäfers F, Schönhense G, Heinzmann U. Analysis of autoionization resonances in the Hg 6s2-photoionization by measurements of photoelectron polarization. Zeitschrift für Physik A: Hadrons and Nuclei.
Schäfers, F., Heinzmann, Ulrich, Schönhense, G.   +2 more
core   +1 more source

On the Importance of the Polarity for GaN/InGaN Last Quantum Barriers in III-Nitride-Based Light-Emitting Diodes

IEEE Photonics Journal, 2016
In this paper, we investigate the electron injection efficiency in terms of different polarities and different polarization charge densities at the ${\rm{GaN/ InGaN}}$ interface. We find that the growth orientation for the ${\rm{GaN/ InGaN}}$-type last
Zi-Hui Zhang, Yonghui Zhang, Hongjian Li, Shu Xu, Chong Geng, Wengang Bi   +5 more
doaj   +1 more source