Ultrafast carrier dynamics in Br+-bombarded InP studied by time-resolved terahertz spectroscopy
Result description
Ultrafast dynamics of charge carriers in Br+-bombarded InP were studied using time-resolved terahertz spectroscopy. Carrier lifetimes and mobilities in various samples prepared with irradiation doses spanning from 109 up to 1012 cm-2 were determined. Thelifetime of photoexcited carriers appears to be determined primarily by the density of defects resulting from host-atom displacements while it is not significantly influenced by the Br-atom implantation. In the most irradiated sample, a carrier lifetimeas short as 300 fs was found. All samples exhibit a high mobility (3000-900 cm2/Vs). In selected samples, the density of traps along with electron and hole lifetimes was determined.
Keywords
InPcarrier lifetimecarrier mobilityultrafastion-bombardmentterahertz
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Ultrafast carrier dynamics in Br+-bombarded InP studied by time-resolved terahertz spectroscopy
Original language description
Ultrafast dynamics of charge carriers in Br+-bombarded InP were studied using time-resolved terahertz spectroscopy. Carrier lifetimes and mobilities in various samples prepared with irradiation doses spanning from 109 up to 1012 cm-2 were determined. Thelifetime of photoexcited carriers appears to be determined primarily by the density of defects resulting from host-atom displacements while it is not significantly influenced by the Br-atom implantation. In the most irradiated sample, a carrier lifetimeas short as 300 fs was found. All samples exhibit a high mobility (3000-900 cm2/Vs). In selected samples, the density of traps along with electron and hole lifetimes was determined.
Czech name
Ultrarychlá dynamika nositelů náboje v InP bombardovaném Br+ studovaná pomocí časově rozlišené terahertzové spektroskopie]
Czech description
Ultrarychlá dynamika nositelů náboje v InP bombardovaném ionty Br byla studována pomocí časově rozlišené terahertzové spektroskopie. Doby života a pohyblivosti nositelů byly určeny ve různých vzorcích lišících se intenzitou ozáření ionty Br v intervalu 109 up to 1012 cm-2. Doba života fotoexcitovaných nositelů je určena především hustotou defektů vzniklých posunutím atomů hostitelské matrice a není ovlivněna přítomností atomů Br. V nejvíce ozářeném vzorku byla zjištěna doba života 300 fs. Všechny vzorkyse vyznačují poměrně vysokou pohyblivostí nositelů (3000-900 cm2/Vs). Pro vybrané vzorky byla určena hustota pastí a doby života elektronů i děr.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
LC512: Center for biomolecules and complex molecular systems
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
78
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
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UT code for WoS article
000262245400060
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2008