Results 31 to 40 of about 465,535 (294)

Condensation of Excitons in Cu2O at Ultracold Temperatures: Experiment and Theory

, 2012
We present experiments on the luminescence of excitons confined in a potential trap at milli-Kelvin bath temperatures under cw-excitation. They reveal several distinct features like a kink in the dependence of the total integrated luminescence intensity ...
Ashcroft N W, Born M, Dirk Semkat, Frank Kieseling, Heinrich Stolz, Holger Fehske, Kreingold F I, Manzke G, Maria Kaupsch, Moskalenko S A, Moskalenko S A, Nobuko Naka, Pethick C J, Proukakis N P, Rico Schwartz, Schwartz R, Semkat D, Siegfried Sobkowiak, Som S, Sunipa Som, Thomas Koch   +20 more
core   +1 more source

Cherenkov luminescence measurements with digital silicon photomultipliers: a feasibility study. [PDF]

, 2015
BackgroundA feasibility study was done to assess the capability of digital silicon photomultipliers to measure the Cherenkov luminescence emitted by a β source.
Belcari, Nicola, Cherry, Simon R, Ciarrocchi, Esther, Guerra, Alberto Del, Hunter, William CJ, Kinahan, Paul E, Lehnert, Adrienne, McDougald, Wendy, Miyaoka, Robert S   +8 more
core   +4 more sources

Excitation Enhancement of a Quantum Dot Coupled to a Plasmonic Antenna

, 2012
Plasmonic antennas are key elements to control the luminescence of quantum emitters. However, the antenna's influence is often hidden by quenching losses. Here, the luminescence of a quantum dot coupled to a gold dimer antenna is investigated.
Itzhakov, S., Kreuzer, M. P., Oron, D., Quidant, R., Rigneault, H., Urena, E. Bermudez, Wenger, J.   +6 more
core   +3 more sources

Infrared induced visible emission from porous silicon: the mechanism of anodic oxidatio [PDF]

, 1997
The visible luminescence caused by anodic oxidation of p-type porous silicon has been studied. It is shown that similar luminescence can be observed in n-type material by illumination with near-infrared light. Addition of a suitable reducing agent to the
Kelly, J.J., Kooij, E.S., Rama, A.R.
core   +3 more sources

Impact of the Interruption Duration on Photoluminescence Properties of MOCVD-Grown GaAsP/InAlGaAs Quantum Well Structures

Nanomaterials
The growth interruption technology is introduced to the growth of GaAsP/InAlGaAs quantum well (QW) structure using metal–organic chemical vapor deposition (MOCVD).
Bin Wang, Yugang Zeng, Xuezhe Yu, Weijie Gao, Wei Chen, Haoyu Shen, Li Qin, Yongqiang Ning, Lijun Wang   +8 more
doaj   +1 more source

Benefits of the Hydrophobic Surface for CH₃NH₃PbI₃ Crystalline Growth towards Highly Efficient Inverted Perovskite Solar Cells

Molecules, 2019
In inverted perovskite solar cells (PSCs), high-quality perovskite film grown on hole-transporting material (HTM) with pinhole-free coverage and a large grain size is crucial for high efficiency.
Yang Li, Zheng Xu, Suling Zhao, Dandan Song, Bo Qiao, Youqin Zhu, Juan Meng   +6 more
doaj   +1 more source

Luminescent properties of Bi-doped polycrystalline KAlCl4

, 2012
We observed an intensive near-infrared luminescence in Bi-doped KAlCl4 polycrystalline material. Luminescence dependence on the excitation wavelength and temperature of the sample was studied.
A. A. Veber, A. N. Romanov, AG Okhrimchuk, AN Romanov, AN Romanov, AN Romanov, B Denker, CS Yoo, E. V. Haula, EM Dianov, G Meyer, GP Dong, H-T Sun, H-T Sun, H-T Sun, H-T Sun, HL Davis, I Razdobreev, IA Bufetov, J Ruan, L Su, L Su, L. A. Trusov, LT Bugaenko, M Peng, M Peng, MA Hamstra, MCM Lucas de, MO Ramirez, NJ Bjerrum, O. V. Usovich, P. E. Kazin, V. B. Sulimov, V. B. Tsvetkov, V. N. Korchak, W Jia, WA Runciman, XG Meng, Y Fujimoto, Y Fujimoto, Z. T. Fattakhova   +40 more
core   +1 more source

Luminescence in sulfides : a rich history and a bright future [PDF]

, 2010
Sulfide-based luminescent materials have attracted a lot of attention for a wide range of photo-, cathodo- and electroluminescent applications. Upon doping with Ce3+ and Eu2+, the luminescence can be varied over the entire visible region by appropriately
Hens, Zeger, Moreels, Iwan, Poelman, Dirk, Smet, Philippe   +3 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

A Comprehensive Review of Group-III Nitride Light-Emitting Diodes: From Millimeter to Micro-Nanometer Scales

Micromachines
This review describes the development history of group-III nitride light-emitting diodes (LEDs) for over 30 years, which has achieved brilliant achievements and changed people′s lifestyles.
Xinye Fan, Jiawang Shi, Yiren Chen, Guoqing Miao, Hong Jiang, Hang Song   +5 more
doaj   +1 more source