Charge collection efficiency of Pt vs. Mg contacts on semi-insulating GaAs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F19%3AA20020TQ" target="_blank" >RIV/61988987:17310/19:A20020TQ - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/19:00509479
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0169433218329337" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169433218329337</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2018.10.164" target="_blank" >10.1016/j.apsusc.2018.10.164</a>
Alternative languages
Result language
angličtina
Original language name
Charge collection efficiency of Pt vs. Mg contacts on semi-insulating GaAs
Original language description
A comparative study of diode structures based on semi-insulating (SI) GaAs with evaporated Mg vs. Pt contacts is presented. Electric field strength in the vicinity of the contacts is inferred from the detection of alpha-particles emitted from Am-241 radioisotope. It is shown that at zero bias, the structure with Mg-based contacts (MgO/SI GaAs) gives comparatively small signal implying an ohmic behaviour. Contrary, the structure with Pt contacts reveals presence of a non-negligible electric field near the contacts at zero bias voltage, thus indicating presence of a sizeable space charge region near the interface. The results are supplemented by insights from atomistic electronic structure modeling of idealized GaAs/Pt vs. GaAs/Mg and GaAs/MgO interfaces.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Surface Science
ISSN
0169-4332
e-ISSN
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Volume of the periodical
467
Issue of the periodical within the volume
February
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
1219-1225
UT code for WoS article
000451023500139
EID of the result in the Scopus database
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