Results 31 to 40 of about 156,775 (308)

Making Graphene Luminescent by Oxygen Plasma Treatment [PDF]

, 2009
We show that strong photoluminescence (PL) can be induced in single-layer graphene using an oxygen plasma treatment. The PL is spatially uniform across the flakes and connected to elastic scattering spectra distinctly different from those of gapless ...
Novoselov, K. S., Hartschuh, A, Novoselov, KS, Hartschuh, A., Gokus, T., Böhmler, Miriam, Geim, AK, Bonetti, A., ,, Ferrari, AC, Geim, A. K., Nair, RR, Nair, R. R., Lombardo, A, Gokus, Tobias, Hartschuh, Achim, Ferrari, A. C., Bohmler, M, Gokus, T, Lombardo, A., Böhmler, M., Bonetti, A   +21 more
core   +2 more sources

Correlation between surface modification and photoluminescence properties of β-Ga2O3 nanostructures

AIP Advances, 2016
In this work three different growth methods have been used to grow β-Ga2O3 nanostructures. The nanostructures were characterized by Grazing Incident X-Ray Diffraction, Scanning Electron Microscopy, Transmission Electron Microscopy and Photoluminescence ...
R. Jangir, S. Porwal, Pragya Tiwari, Puspen Mondal, S. K. Rai, A. K. Srivastava, Indranil Bhaumik, Tapas Ganguli   +7 more
doaj   +1 more source

Influence of the synthesis conditions on the photoluminescence of silica gels [PDF]

Journal of the Serbian Chemical Society, 2003
The photoluminescence spectra of silica xerogel samples synthesized with ethanol as solvent and xerogel where the ethanol was exchanged by water before drying are reported.
IVANA HINIC, GORAN STANICIC, ZORAN POPOVIC   +2 more
doaj   +3 more sources

Construction of online detection system for photoluminescence of perovskite thin films and research on the luminescence enhancement by light treatment

Gongneng cailiao yu qijian xuebao
Perovskite thin films fabricated through the solution process exhibit a significant number of internal defects. These defects serve as nonradiative recombination centers, markedly reducing photoluminescence intensity.
Tao DENG, Xiuxiu LIU, Shuai ZHANG, Wenhua HUANG, Wenhui LYU   +4 more
doaj   +1 more source

Nonoxide Sol-Gel Synthesis of Terbium-Doped Silicon Nitride Phosphors

, 2009
Exposure of solutions of Tb(N(SiMe3)2)3 with SiCl(NEt2)3 in tetrahydrofuran to dry ammonia results in polymeric xerogels. Heating these gels in ammonia leads to amorphous Tb:SiNx phosphors that exhibit bright green luminescence under UV irradiation.
Hector, Andrew L., Hassan, Shereen, Carravetta, Marina, Stebbings, Laura A.   +3 more
core   +1 more source

Photoluminescence control by hyperbolic metamaterials and metasurfaces: a review

Opto-Electronic Advances, 2021
Photoluminescence including fluorescence plays a great role in a wide variety of applications from biomedical sensing and imaging to optoelectronics.
Leonid Yu. Beliaev, Osamu Takayama, Pavel N. Melentiev, Andrei V. Lavrinenko   +3 more
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

Variable-temperature photoluminescence emission instrumentation and measurements on low yield metals [PDF]

, 2010
Measurements of the photoluminescence emission spectra of 99.999 % purity gold, 99.9999 % purity copper, polycrystalline PbMo6S8 and single crystal YBCO were made for λex = 488 nm as a function of temperature (72 K < T < 300 K), time (t < 12 hours ...
ARMSTRONG, HELEN
core  

Photoluminescence-Driven Broadband Transmitting Directional Optical Nanoantennas

, 2018
Optical nanoantennas mediate near and far optical fields. Operating a directional nanoantenna in transmitting mode is challenging because the antenna needs to be driven by a nanosized optical frequency generator, which must work at the antenna’s ...
Fan-Cheng Lin (1611820), You-Xin Huang, A. T. Mina Yeşilyurt, Chen-Hsien Huang (5706872), Fan-Cheng Lin, You-Xin Huang (5706869), Tzu-Yu Chen (2889935), Tzu-Yu Chen, Kel-Meng See (5706866), Jer-Shing Huang (1611817), Chen-Hsien Huang, Kel-Meng See, Jer-Shing Huang, A. T. Mina Yeşilyurt (5706875)   +13 more
core   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source