نتایج جستجو برای: surface recombination

تعداد نتایج: 680002  

2014
Christian Hauswald Pierre Corfdir Johannes K. Zettler Vladimir M. Kaganer Karl K. Sabelfeld Sergio Fernández-Garrido Timur Flissikowski Vincent Consonni Tobias Gotschke Holger T. Grahn Lutz Geelhaar Oliver Brandt

We investigate the origin of the fast recombination dynamics of bound and free excitons in GaN nanowire ensembles by temperature-dependent photoluminescence spectroscopy using both continuous-wave and pulsed excitation. The exciton recombination in the present GaN nanowires is dominated by a nonradiative channel between 10 and 300 K. Furthermore, bound and free excitons in GaN NWs are strongly ...

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2016
Taeho Shin Kyung-Sang Cho Dong-Jin Yun Jinwoo Kim Xiang-Shu Li Eui-Seong Moon Chan-Wook Baik Sun Il Kim Miyoung Kim Jun Hee Choi Gyeong-Su Park Jai-Kwang Shin Sungwoo Hwang Tae-Sung Jung

We examine exciton recombination, energy-, and charge transfer in multilayer CdS/ZnS quantum dots (QDs) on silver plasmonic resonators using photoluminescence (PL) and excitation spectroscopy along with kinetic modeling and simulations. The exciton dynamics including all the processes are strongly affected by the separation distance between QDs and silver resonators, excitation wavelength, and ...

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2012
Jayaramaiah Uday Hosagavi Puttegowda Puttaraju

Wolbachia surface protein (WSP) is an eight beta-barrel transmembrane structure which participates in host immune response, cell proliferation, pathogenicity and controlled cell death program. The protein has four extracellular loops containing hyper variable regions separated by conserved regions. The WSP structure is homologous to Neisseria surface protein (Nsp A) which has about 34% similari...

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Journal: :Nano letters 2006
M V Bashevoy F Jonsson A V Krasavin N I Zheludev Y Chen M I Stockman

The injection of a beam of free 50 keV electrons into an unstructured gold surface creates a highly localized source of traveling surface plasmons with spectra centered below the surface plasmon resonance frequency. The plasmons were detected by a controlled decoupling into light with a grating at a distance from the excitation point. The dominant contribution to the plasmon generation appears ...

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2001
M. Woodall A. C. Warren

We have unpinned the Fermi level at the surface of both nandp-type (100) GaAs in air. Lightinduced photochemistry between GaAs and water unpins the surface Fermi level by reducing the surface state density. Excitation photoluminescence spectroscopy shows a substantial decrease in both surface band bending and surface recombination velocity in treated samples, consistent with a greatly reduced s...

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Journal: :Sensor Electronics and Microsystem Technologies 2011

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Journal: :Energy Procedia 2011

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Journal: :Journal of Physics: Conference Series 2009

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Journal: :iranian journal of biotechnology 2015
mohammad hadi sekhavati mojtaba tahmoorespur farnoosh jafarpour kianoush dormiani yahya khazaie

background: phic31 integrase system provides a new platform in various felid of research, mainly in gene therapy and creation of transgenic animals. this system enables integration of exogenous dna into preferred locations in mammalian genomes, which results in robust, long-term expression of the integrated transgene.objectives: identification of a novel pseudo attp site.materials and methods: ...

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Journal: :iranian journal of allergy, asthma and immunology 0
mojgan safari nima rezaei mehrdad hajilooi asghar aghamohammadi qiang pan-hammarstrom lennart hammarstrom

immunoglobulin class switch recombination deficiencies (ig csr deficiencies) or hyper igm syndromes (higm) are a group of primary immunodeficiency diseases, characterized by defective cd40 signaling of b cells resulting into a csr and a somatic hypermutation. the affected patients are characterized with reduced serum levels of igg and iga, and normal or elevated level of igm, which lead to incr...

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