V
Vaidas Pačebutas
Researcher at Opel
Publications - 61
Citations - 945
Vaidas Pačebutas is an academic researcher from Opel. The author has contributed to research in topics: Terahertz radiation & Photoluminescence. The author has an hindex of 16, co-authored 56 publications receiving 863 citations.
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Journal ArticleDOI
GaBiAs: A material for optoelectronic terahertz devices
K. Bertulis,Arūnas Krotkus,G. Aleksejenko,Vaidas Pačebutas,Ramūnas Adomavičius,G. Molis,Saulius Marcinkevicius +6 more
TL;DR: In this article, it was shown that the spectral photosensitivity cutoff wavelength reaches ∼1.4μm when the growth temperature is as low as 280°C and that the electron trapping time decreases with decreasing growth temperature from 20 to about 1ps.
Journal ArticleDOI
Terahertz time-domain-spectroscopy system based on femtosecond Yb:fiber laser and GaBiAs photoconducting components
Vaidas Pačebutas,A. Bičiūnas,S. Balakauskas,Arūnas Krotkus,G. Andriukaitis,D. Lorenc,A. Pugžlys,Andrius Baltuška +7 more
TL;DR: In this article, a terahertz time-domain spectroscopy system based on photoconductive components fabricated from low-temperature-grown GaBiAs epitaxial layers and activated by femtosecond 103μm pulses emitted by an Yb:fiber laser is described.
Journal ArticleDOI
Efficiency improvement by porous silicon coating of multicrystalline solar cells
Arūnas Krotkus,K. Grigoras,Vaidas Pačebutas,István Bársony,Eva Vazsonyi,Miklos Fried,Jozef Szlufcik,Johan Nijs,Claude Lévy-Clément +8 more
TL;DR: Shallow junction multicrystalline Si solar cells have been processed by an anodical etching technique and more than 25% improvement in short-circuit current and photovoltaic energy conversion efficiency was demonstrated.
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Multi-quantum well Ga(AsBi)/GaAs laser diodes with more than 6% of bismuth
Renata Butkutė,A. Geižutis,Vaidas Pačebutas,B. Čechavičius,Virginijus Bukauskas,R. Kundrotas,P. Ludewig,Kerstin Volz,Arūnas Krotkus +8 more
TL;DR: In this article, single and multi-quantum well (QW) structures of Ga(AsBi)/GaAs with up to 10% Bi were grown by molecular beam epitaxy (MBE) at 300-330°C substrate temperature.
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Characterization of low-temperature molecular-beam-epitaxy grown GaBiAs layers
Vaidas Pačebutas,K. Bertulis,L. Dapkus,G. Aleksejenko,Arūnas Krotkus,Kin Man Yu,Wladek Walukiewicz +6 more
TL;DR: In this paper, the energy bandgap of the gallium bismide alloys was determined from spectral measurements of the optical absorption, photoconductivity and photoluminescence, and it was found that the electron trapping crosssection is of the same order of magnitude as the corresponding parameter for As-antisite traps in LTG GaAs.