doping agent

doping agent

[′dōp·iŋ ‚ā·jənt]
(electronics)
An impurity element added to semiconductor materials used in crystal diodes and transistors. Also known as dopant; dope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
However, for high Zn-content film, excess doping agent precipitates resulting in zinc coalescence in certain regions resulting in enhanced absorption which has adverse effect in window layers in solar cells.
After discussing the synthetic and modification methods of PEDOT, the oxidative polycondensation between EDOT and mEDOT monomers in the presence of a new kind of doping agent. Sulfonated Polyarylethersulfone (SPES)--that was synthesized on purpose, with different degree of sulfonation (DS)--is illustrated.
Lots of French GPs [11] stated that most records have been broken due to doping (83.5%) and that most of the great champions resort to doping (73%), whereas half of the Serbian GPs believe that most professional athletes used a doping agent at least once in their career.
The introduction of a doping agent in a mixed metal oxide ceramic has been considered an interesting strategy for improvement in the dependence of impedance value with relative humidity (RH) variation [10-13].
But triamcinolone has also been widely used as a doping agent by riders, including Lance Armstrong, and is believed to help athletes fight fatigue and aid recovery.
Because synthetic growth hormone can build muscle and trim body fat, it is prohibited as a doping agent by many sports organizations.
In other words, contrary to the classification of Australian Institute of Sport (AIS) in which creatine is categorized in the group A supplements with established evidence for legal performance enhancing performance, safety and efficacy (1), football players considered it as a doping agent, which demonstrates the lack of proper knowledge about supplements notwithstanding the high prevalence of anabolic steroid use which has been reported in the literature (23).
Zinc is well-known doping agent for hydroxyapatites employed in biomedical applications, because they improve the phosphate bioactivity in many ways.
Lithium acts as promoter, titanium acts as stabilizer, and sodium acts as doping agent in the process of capturing carbon dioxide over absorbent.
Recombinant GH is already being used as a doping agent in sports.
"We would like more opportunity for us to challenge an athlete caught with a serious doping agent as to why they should get less than four years.
Millar never tested positive but confessed to the use of blood doping agent EPO and served a two-year ban that ended in 2006.