نتایج جستجو برای: photovoltage curves

تعداد نتایج: 93972  

2014
Isabelle Bisotto Ethirajulu S Kannan Jean-Claude Portal Devin Brown Thomas J Beck Yuriy Krupko Laurent Jalabert Hiroyuki Fujita Yusuke Hoshi Yasuhiro Shiraki Takura Saraya

In this work, we studied the photovoltage response of an antidot lattice to microwave radiation for different antidot parameters. The study was carried out in a Si/SiGe heterostructure by illuminating the antidot lattice with linearly polarized microwaves and recording the polarity of induced photovoltage for different angles of incidence. Our study revealed that with increased antidot density ...

Journal: :bulletin of the iranian mathematical society 2013
a. kazemifard a. r. naghipour s. tafazolian

in this note we review a simple criterion, due to ekedahl, for superspecial curves defined over finite fields.using this we generalize and give some simple proofs for some well-known superspecial curves.

2005
V. L. Malevich

Monte Carlo method is used to simulate photo-Dember effect and generation of electromagnetic terahertz pulses in n-InAs excited by femtosecond laser radiation. Dynamics of electric field and transport of carriers were considered self-consistently. It is shown that, under excitation of semiconductor by laser pulses with photon energies < 1.1 eV, the Dember photovoltage reaches a peak value (it c...

Journal: :Journal of the American Chemical Society 2008
Xiaomu Wu Peter L Redmond Haitao Liu Yihui Chen Michael Steigerwald Louis Brus

We investigate the photoconversion of aqueous 8 nm Ag nanocrystal seeds into 70 nm single crystal plate nanoprisms. The process relies on the excitation of Ag surface plasmons. The process requires dioxygen, and the transformation rate is first-order in seed concentration. Although citrate is necessary for the conversion, and is consumed, the transformation rate is independent of citrate concen...

2013
Ramesh Mani R. G. Mani A. N. Ramanayaka Tianyu Ye

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations Report Title We examine and compare the diagonal magnetoresistance, R-xx, and the photovoltage induced by microwave (42 <= f <= 300 GHz) and terahertz (f >= 300 GHz) photoexcitation in the high mobility quasi-two-dimensional GaAs/AlGaAs system. The data demonstrate strong ra...

2012
J. Wang H. X. Zhao L. P. Du H. Cai P. Wang

An enzyme-metal-insulator-silicon (EMIS) structured chemical sensor based on photovoltage technology is constructed for potentiometric biosensing of glucose in a flow-injection analysis (FIA) system. To enhance the sensibility of the sensor to glucose, an ultra-thin (60 nm) film of polypyrrole (PPy)-glucose oxidase (GOD) is formed as the glucose-sensitive membrane through a simple electropolyme...

Journal: :Dalton transactions 2013
Bingkun Liu Dejun Wang Yu Zhang Haimei Fan Yanhong Lin Tengfei Jiang Tengfeng Xie

Vertically aligned TiO(2) nanorod arrays (NRAs) modified with Ag(2)S quantum dots (QDs) have been successfully prepared via a successive ionic layer adsorption and reaction (SILAR) process. Ultraviolet-visible (UV-vis) absorption spectra and surface photovoltage (SPV) measurements reveal that the Ag(2)S sensitization extends the range of the photoresponse of the TiO(2) NRAs to the visible regio...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2005
Benoy B Bhowmik Papia Ganguly

The spectral (both absorption and fluorescence) and photoelectrochemical studies of some anionic xanthene dyes namely erythrosine B, rose bengal and eosin have been carried out in micellar solution of cationic cetyl trimethyl ammonium bromide (CTAB), anionic sodium dodecyl sulphate (SDS) and neutral triton X-100 (TX-100). The results show that all these dyes form 1:1 electron-donor-acceptor (ED...

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