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1 Acta Physica Polonica A

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Transient Photoconductivity and Photoluminescence in InP:Cu

100%

Stalnionis A. , Adomavic̆ius R. , Krotkus A. , Marcinkevic̆ius S. , Leon R. , Jagadish C.

Acta Physica Polonica A

1996

tom 90

nr 5

931-934

Nonequilibrium photoexcited carrier dynamics in InP:Cu was investigated by two experimental techniques: the time-resolved photoluminescence up-conversion and the transient photoconductivity measurement. Both measurements show that doping with copper significantly modifies the photoexcited carrier relaxation in indium phosphide. There are several strong indications that this effect originates from the carrier trapping at metallic precipitates.

THz Time Domain Spectroscopy of Thin Gold Layers on GaAs

84%

Szczytko J. , Adomavicius R. , Papis E. , Barańska A. , Wawro A. , Krotkus A. , Piętka B. , Łusakowski J.

nr 6

1118-1120

Thin layers of Au with the thickness of several nanometers were prepared on a semi-insulating GaAs substrate. The layers' thickness was determined by ellipsometry. THz time-domain spectroscopy was applied to determine a complex index of refraction of thin Au layers. The obtained results allow for a more precise modeling of the performance of semiconductor devices at THz frequencies.