Results 31 to 40 of about 240,081 (351)
Optical Determination of the Band Gap and Band Tail of Epitaxial Ag$_2$ZnSnSe$_4$ at Low Temperature [PDF]
Phys. Rev. B 102, 195205 (2020), 2020 We report on the precise determination of both the band gap E$_\text{g}$, and the characteristic energy $U$ of the band tail of localized defect states, for monocrystalline Ag$_2$ZnSnSe$_4$. Both photoluminescence excitation and time-resolved photoluminescence studies lead to E$_\text{g} = 1223\pm3$ meV, and $U = 20\pm3$ meV, at 6 K.
arxiv +1 more source
Exciton decay dynamics in individual carbon nanotubes at room temperature [PDF]
, 2008 We studied the exciton decay dynamics of individual semiconducting single-walled carbon nanotubes at room temperature using time-resolved photoluminescence spectroscopy.
Allegrini, Maria +9 more
core +2 more sources
Photoluminescence of ZnO Nanowires: A Review [PDF]
Nanomaterials, 2020 One-dimensional ZnO nanostructures (nanowires/nanorods) are attractive materials for applications such as gas sensors, biosensors, solar cells, and photocatalysts. This is due to the relatively easy production process of these kinds of nanostructures with excellent charge carrier transport properties and high crystalline quality.
Andres Galdámez-Martinez +4 more
openaire +5 more sources
Enhancement of carbon nanotube photoluminescence by photonic crystal nanocavities [PDF]
Appl. Phys. Lett. 101, 141124 (2012), 2012 Photonic crystal nanocavities are used to enhance photoluminescence from single-walled carbon nanotubes. Micelle-encapsulated nanotubes are deposited on nanocavities within Si photonic crystal slabs and confocal microscopy is used to characterize the devices. Photoluminescence spectra and images reveal nanotube emission coupled to nanocavity modes. The
arxiv +1 more source
Photoluminescence of freestanding single- and few-layer MoS2 [PDF]
Phys. Rev. B 89, 125406 (2014), 2013 We present a photoluminescence study of freestanding and Si/SiO2 supported single- and few-layer MoS2. The single-layer exciton peak (A) is only observed in freestanding MoS2. The photoluminescence of supported single-layer MoS2 is instead originating from the A- (trion) peak as the MoS2 is n-type doped from the substrate.
arxiv +1 more source
On the diffusion of lattice matched InGaAs/InP microstructures [PDF]
, 2003 Copyright (2003) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in F.
Brenchley M. E. +6 more
core +1 more source
Photoluminescence of tetrachloroarsenate(III) [PDF]
Chemical Physics Letters, 1994 Glasses of (NBu4)AsCl4 in ethanol at 77 K show a red emission at λmax=617 nm with Ø≈ 10−4 and τ=0.46 μs. It is suggested that this luminescence originates from the sp excited state 3P1 of the As3+ ion. The excited state properties of AsCl−4 are discussed in comparison to those of SbCl−4 and BiCl−4.
Kunkely, Horst +2 more
openaire +2 more sources
AIP Advances, 2011 We have investigated the relation between the exciton photoluminescence intensity and distortion of the crystal plane in a ZnO wafer. The present investigation utilizes the following two characterization methods that complement the result of the ...
Hideo Takeuchi
doaj +1 more source
Study the Effect of Different Silicon Substrate Resistivities on the Photoluminescence Results
Journal of Kufa-Physics, 2019 The silicon-based electroluminescent devices are most commonly used in recent years, especially in optical equipment. The physical properties of the photoluminescence are investigated experimentally in this paper.
Najwan Hussein Numan
doaj +1 more source
Confined-domain crosslink-enhanced emission effect in carbonized polymer dots
Light: Science & Applications, 2022 Confined-domain crosslink-enhanced emission effect was first studied to reveal the photoluminescence mechanism of carbonized polymer dots (CPDs). A general strategy was exploited to synthesize CPDs exhibiting tunable photoluminescence properties.
Songyuan Tao +9 more
doaj +1 more source