Elektrotechnický ústav SAV, v.v.i.

2023

Gucmann, F., Nádaždy, P., Hušeková, K., Dobročka, E., Priesol, J., Egyenes, F., Šatka, A., Rosová, A., and Ťapajna, M.: Thermal stability of rhombohedral α- and monoclinic β-Ga2O3 grown on sapphire by liquid-injection MOCVD, Mater. Sci Semicond. Process. 156 (2023) 107289.

Šimkovic, I., Gucmann, F., Hricovíni, M., Mendichi, R., Schieroni, A.G., Piovani, D., Zappia, S., Dobročka, E., Filip, J., and Hricovíni, M.: Properties of quaternized and crosslinked carboxymethylcellulose films, Cellulose 30 (2023) 2023-2036.

Hrubišák, F., Hušeková, K., Zheng, X., Rosová, A., Dobročka, E., Ťapajna, M., Mičušík, M., Nádaždy, P., Egyenes, F., Keshtkar, J., Kováčová, E., Pomeroy, J.W., Kuball, M., and Gucmann, F.: Heteroepitaxial growth of Ga₂O₃ on 4H-SiC by liquid-injection MOCVD for improved thermal management of Ga₂O₃ power devices, J. Vacuum Sci Technol. A 41 (2023) 042708.

Kuzmík, J., Pohorelec, O., Hasenöhrl, S., Blaho, M., Stoklas, R., Dobročka, E., Rosová, A., Kučera, M., Gucmann, F., Gregušová, D., Precner, M., and Vincze, A.: Mg doping of N-polar, in-rich InAlN, Materials, 16 (2023) 2250.

Dobročka, E., Gucmann, F., Hušeková, K., Nádaždy, P., Hrubišák, F., Egyenes, F., Rosová, A., Mikolášek, M., and Ťapajna, M.: Structure and thermal stability of ε/κ-Ga₂O₃ films deposited by liquid-injection MOCVD, Materials 16 (2023) 20.

Egyenes, F., Gucmann, F., Rosová, A., Dobročka, E., Hušeková, K., Hrubišák, F., Keshtkar, J., and Ťapajna, M.: Conductance anisotropy of MOCVD-grown α-Ga₂O₃ films caused by (010) β-Ga₂O₃ filament-shaped inclusions, J. Phys. D: Appl Phys. 56 (2023) 045102.

Hasenöhrl, S., Blaho, M., Dobročka, E., Gucmann, F., Kučera, M., Nádaždy, P., Stoklas, R., Rosová, A., and Kuzmík, J.: Growth of N-polar In-rich InAlN by metal organic chemical vapor deposition on on- and off-axis sapphire, Mater. Sci Semicond. Process. 156 (2023) 107290.

Stoklas, R., Hasenőhrl, S., Dobročka, E., Gucmann, , and Kuzmík, J.: Electron transport properties in thin InN layers grown on InAlN, Mater. Sci Semicond. Process. 155 (2023) 107250.

Chvála, A., Kováč, J., Gregušová, D., Ťapajna, M., Gucmann, F., Marek, J., and Florovič, M.: 3D thermal simulation of GaAs-based HEMT on foreign substrates. In: 5^th Inter. Conf. Microelectr. Devices Technol. MicDAT 2023. IFSA Publ. 2023. ISBN 978-84-09-53748-8, pp. 20-23.

Ťapajna, M., Keshtkar, J., Szabó, O., Shagieva, E., Hušeková, K., Dobročka, E., Fedor, J., Dérer, J., Kromka, A., and Gucmann, F.: Growth of nanocrystalline diamond on gallium oxide using various interlayers. In Proc. 11^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Eds. D. Jandura et al. Žilina: EDIS 2023. ISBN 978-80-554-1977-0. P. 28-31.

Yuan, C., Mao, Y., Meng, B., Xiao, X., Hrubišák, F., Egyenes, F., Dobročka, E., Hušeková, K., Rosová, A., Eliáš, P., Keshtkar, J., Ťapajna, M., and Gucmann, F.: Thermal properties of Ga₂O₃ films and interfaces grown by MOCVD. In Proc. 11^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Eds. D. Jandura et al. Žilina: EDIS 2023. ISBN 978-80-554-1977-0. P. 36-39.

Hrubišák, F., Hušeková, K., Zheng, X., Rosová, A., Dobročka, E., Ťapajna, M., Mičušík, M., Nádaždy, P., Egyenes, F., Keshtar, J., Kováčová, E., Pomeroy, J.W., Kuball, M., and Gucmann, F.: Material properties of MOCVD-grown β- and κ-Ga₂O₃ thin films on 4H-SiC substrates. In Proc. 11^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Eds. D. Jandura et al. Žilina: EDIS 2023. ISBN 978-80-554-1977-0. P. 87-90.

2022

Rosová, A., Dobročka, E., Eliáš, P., Hasenöhrl, S., Kučera, M., Gucmann, F., and Kuzmík, J.: In(Ga)N 3D growth on GaN-buffered on-axis and off-axis (0001) sapphire substrates by MOCVD, Nanomater. 12 (2022) 3496.

Kozak, A., Sojková, M., Gucmann, F., Bodík, M., Vegso, K., Dobročka, E., Píš, I., Bondino, F., Hulman, M., Šiffalovič, P., and Ťapajna, M.: Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe₂, Applied Surface Sci 605 (2022) 154883.

Hrubišák, F., Hušeková, K., Egyenes, F., Rosová, A., Kubranská, A., Dobročka, E., Nádaždy, P., Keshtar, J., Gucmann, F., and Ťapajna, M.: Structural and electrical properties of Ga₂O₃ transistors grown on 4H-SiC substrates. In: ASDAM 2022. Eds. J. Marek et al. IEEE 2022. ISBN 978-1-6654-6977-7. P. 115-118.

Egyenes, F., Gucmann, F., Dobročka, E., Mikolášek, M., Hušeková, K., and Ťapajna, M.: Transport properties of Si-doped ẞ-Ga₂O₃ grown by liquid-injection MOCVD. In: ASDAM 2022. Eds. J. Marek et al. IEEE 2022. ISBN 978-1-6654-6977-7. P. 119-122.

Hrubišák, F., Hušeková, K., Egyenes, F., Gucmann, F., Dobročka, E., Keshtkar, J., and Ťapajna, M.: Effects of repeated annealing in different atmospheres on surface morphology of ε-/κ-Ga₂O₃ grown on c-plane sapphire using LI-MOCVD method. In: ELITECH´22: 24^th Conf. Doctoral Students Ed. A. Kozáková. Bratislava: Spektrum STU, 2022. ISBN 978-80-227-5192-6.

Keshtkar, J., Gucmann, F., Hotový, I., Dobročka, E., Egyenes, F., and Ťapajna, M.: NiO thin films for solar-blind photodetectors:structure and electrical properties. In: ELITECH´22: 24^th Conf. Doctoral Students Ed. A. Kozáková. Bratislava: Spektrum STU, 2022. ISBN 978-80-227-5192-6.

Hrubišák, F., Egyenes, F., Dobročka, E., Gucmann, F., Hušeková, K., Keshtkar, J., and Ťapajna, M.: Growth and properties of Ga₂O₃ on 4H-SiC using liquid-injection MOCVD. In Proc. 10^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Eds. M. Feiler et al. Žilina: EDIS 2022. ISBN 978-80-554-1884-1. P. 47-50.

Keshtkar, J., Hotovy, I., Gucmann, F., Hušeková, K., Dobročka, E., Nádaždy, P., Egyenes, F., Mikolášek, M., and Ťapajna, M.: NiO thin films for solar-blind photodetectors: structure and electrical properties. In Proc. 10^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Eds. M. Feiler et al. Žilina: EDIS 2022. ISBN 978-80-554-1884-1. P. 113-116.

2021

Gucmann, F., Pomeroy, J.W., and Kuball, M.: Scanning thermal microscopy for accurate nanoscale device thermography, Nano Today 39 (2021) 101206.

Gucmann, F., Kučera, M., Hasenőhrl, S., Eliáš, P., Rosová, A., Dobročka, E., Stoklas, R., and Kuzmík, J.: InN crystal habit, structural, electrical, and optical properties affected by sapphire substrate nitridation in N-polar InN/InAlN heterostructures, Semicond. Sci Technol. 36 (2021) 075025.

Šimkovic, I., Gucmann, F., Mendichi, R., Schieroni, A.G., Piovani, D., Dobročka, E., and Hricovíni, M.: Extraction and characterization of polysaccharide films prepared from Furcellaria lumbricalis and Gigartina skottsbergii seaweeds, Cellulose 28 (2021) 9567–9588.

Mošková, A., Moško, M., Precner, M., Mikolášek, M., Rosová, A., Mičušík, M., Štrbík, V., Šoltýs, J., Gucmann, F., Dobročka, E., and Fröhlich, K.: Doping efficiency and electron transport in Al-doped ZnO films grown by atomic layer deposition, J. Applied Phys. 130 (2021) 035106.

Gregušová, D., Pohorelec, O., Ťapajna, M., Blaho, M., Gucmann, F., Stoklas, R., Hasenöhrl, S., Laurenčíková, A., Šichman, P., Haščík, Š., and Kuzmík, J.: Polarization engineering in GaN-based normally-off transistors. In: 2021 Inter. Meeting for Future of Electron Devices – IMFEDK2021. Kansai, Virtual 2021. Invited. IEEE: 2021, p. 1-4. ISBN 978-1-6654-4200-8.

Egyenes-Pörsök, F., Hušeková, K., Dobročka, E., Gucmann, F., and Ťapajna, M.: Optimization of Ohmic contact formation for αlpha-Ga₂O₃ epitaxial layers grown by MOCVD. In Proc. 9^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Žilina: EDIS 2021. ISBN 978-80-554-1735-6. P. 91-94.

Gucmann, F., Hušeková, K., Dobročka, E., Nádaždy, P., Egyenes-Pörsök, F., and Ťapajna, M.: Growth and properties of ε-Ga₂O₃ on sapphire substrates. In Proc. 9^th Inter. Conf. on Advances in Electron. Photon. Technol. – ADEPT. Žilina: EDIS 2021. ISBN 978-80-554-1735-6. P. 63-66.

2020

Hasenöhrl, S., Dobročka, E., Stoklas, R., Gucmann, F., Rosová, A., and Kuzmík, J.: Growth and Properties of N-polar InN/InAlN Heterostructures, Phys. Stat. sol (a) 217 (2020) 2000197.

Egyenes-Pörsök, E., Gucmann, F., Hušeková, K., Dobročka, E., Sobota, M., Mikolášek, M., Fröhlich, K., and Ťapajna, M.: Growth of α- and β-Ga₂O₃ epitaxial layers on sapphire substrates using liquid-injection MOCVD, Semicond. Sci Technol. 35 (2020) 115002.

Pohorelec, O., Ťapajna, M., Gregušová, D., Gucmann, F., Hasenöhrl, S., Haščík, Š., Stoklas, R., Seifertová, A., Pécz, B., Tóth, L., and Kuzmík, J.: Investigation of interfaces and threshold voltage instabilities in normally-off MOS-gated InGaN/AlGaN/GaN HEMTs, Applied Surface Sci 528 (2020) 146824.

Šichman, P., Hasenöhrl, S., Stoklas, R., Priesol, J., Dobročka, E., Haščík, Š., Gucmann, F., Vincze, A., Chvála, A., Marek, J., Šatka, A., and Kuzmík, J.: Semi-insulating GaN for vertical structures: role of substrate selection and growth pressure, Mater. Sci Semicond. Process. 118 (2020) 105203.

Chauhan, P., Hasenöhrl, S., Vančo, Ľ., Šiffalovič, P., Dobročka, E., Machajdík, D., Rosová, A., Gucmann, F., Kováč, J.jr., Maťko, I., Kuball, M., and Kuzmík, J.: A systematic study of MOCVD reactor conditions and Ga memory effect on properties of thick InAl(Ga)N layers: A complete depth-resolved investigation, CrystEngComm 22 (2020) 130-141.

Kabouche, R., Pecheux, R., Harrouche, K., Okada, E., Medjdoub, F., Derluyn, J., Degroote, S., Germain, M., Gucmann, F., Middleton, C., Pomeroy, J.W., and Kuball, M.: High efficiency AlN/GaN HEMTs for q-band applications with an improved thermal dissipation. In Wide Bandgap Semiconductor Electronics and Devices. Select. Topics in Electron. Systems Vol. 63. Eds. U. Singisetti, T. Razzak, Y. Zhang. World Sci Publ. 2020, ISBN 978-981-121-647-3, pp. 51-62.(Not IEE SAS)

Kučera, M., Hasenőhrl, S., Dobročka, E., Rosová, A., Eliáš, P., Gucmann, F., and Kuzmík, J.: Morphology, crystalline quality, and optical properties of MOCVDgrown InN/InAlN heterostructures. In: ASDAM 2020. Eds. T. Izsák et al. IEEE 2020. ISBN 978-1-7281-9776-0. P. 131-134.

2019

Kabouche, R., Pecheux, R., Harrouche, K., Okada, E., Medjdoub, F., Derluyn, J., Degroote, S., Germain, M., Gucmann, F., Middleton, C., Pomeroy, J.W., and Kuball, M.: High efficiency AlN/GaN HEMTs for q-band applications with an improved thermal dissipation, Inter. J. High Speed Electron. Systems 28 (2019) 1940003. (Not IEE SAS)

Liang, J., Zhou, Y., Masuya, S., Gucmann, F., Singh, M., Pomeroy, J., Kim, S., Kuball, M., Kasu, M., and Shigekawa, N.: Annealing effect of surface-activated bonded diamond/Si interface, Diamond Related Mater. 93 (2019) 187-192. (Not IEE SAS)

Chauhan, P., Hasenöhrl, S., Dobročka, E., Chauvat, M.-P., Minj, A., Gucmann, F., Vančo, Ľ., Kováč, J.jr., Kret, S., Ruterana, P., Kuball, M., Šiffalovič, P., and Kuzmík, J.: Evidence of relationship between strain and In-incorporation: growth of N-polar In-rich InAlN buffer layer by OMCVD, J. Applied Phys. 125 (2019) 105304.

Ťapajna, M., Drobný, J., Gucmann, F., Hušeková, K., Gregušová, D., Hashizume, T., and Kuzmík, J.: Impact of oxide/barrier charge on threshold voltage instabilities in AlGaN/GaN metal-oxide-semiconductor heterostructures, Mater. Sci in Semicond Process. 91 (2019) 356-361.

Kuball, M., Pomeroy, J. W., Gucmann, F., and Oner, B.: Thermal analysis of semiconductor devices and materials – Why should I not trust a thermal simulation?. In IEEE BiCMOS and Compound Semicond. Integrated Circuits Technol. Symp. (BCICTS). Nashville 2019, pp. 1-5. (Not IEE SAS)

2018

Gucmann, F., Ťapajna, M., Pohorelec, O., Haščík, Š., Hušeková, K., and Kuzmík, J.: Creation of two-dinesional electron gas and role of surface donors in III-N metal-oxide-semiconductor high-electron mobility transistors, Phys. Status Solidi A 215 (2018) 1800090.

Kúdela, R., Šoltýs, J., Kučera, M., Stoklas, R., Gucmann, F., Blaho, J., Mičušík, M., Pohorelec, O., Gregor, M., Brytavskyi, I.V., Dobročka, E., and Gregušová, D.: Technology and application of in-situ AlO_x layers on III-V semiconductors, Applied Surface Sci 461 (2018) 33-38.

2017

Ťapajna, M., Stoklas, R., Gregušová, D., Gucmann, F., Hušeková, K., Haščík, Š., Fröhlich, K., Tóth, L., Pecz, B., Brunner, F., Kuzmík, J., : Investigation of ‘surface donors’ in Al2O3/AlGaN/GaN metal-oxide-semiconductor heterostructures: Correlation of electrical, structural, and chemical properties. Applied Surface Sci 426 (2017) 656-661.

Ťapajna, M., Válik, L., Gucmann, F., Gregušová, D., Fröhlich, K., Haščík, Š., Dobročka, E., Tóth, L., Pecz, B., Kuzmík, J., : Low-temperature atomic layer deposition-grown Al2O3 gate dielectric for GaN/AlGaN/GaN MOS HEMTs: Impact of deposition conditions on interface state density. J. Vacuum Sci Technol. B 35 (2017) 01A107.

Gucmann, F., Kúdela, R., Rosová, A., Dobročka, E., Micusik, M., Gregušová, D., : Optimization of UV-assisted wet oxidation of GaAs,. J. Vacuum Sci Technol. B 35 (2017) 01A116.

Gregušová, D., Gucmann, F., Kúdela, R., Mičušík, M., Stoklas, R., Válik, L., Greguš, J., Blaho, M., Kordoš, P., : Properties of InGaAs/GaAs metal-oxide-semiconductor heterostructure field-effect transistors modified by surface treatment,. Applied Surface Sci 395 (2017) 140-144.

2016

Gucmann, F., Gregušová, D., Válik, L., Ťapajna, M., Haščík, Š., Hušeková, K., Fröhlich, K., Pohorelec, O., Kuzmík, J., : DC and pulsed IV characterisation of AlGaN/GaN MOS-HEMT with Al2O3 gate dielectric prepared by various techniques In: ASDAM 2016. Eds. Š. Haščík et al. IEEE 2016. ISBN 978-1-5090-3081-1. P. 9-12.

Ťapajna, M., Hušeková, K., Pohorelec, O., Válik, L., Haščík, Š., Gucmann, F., Fröhlich, K., Gregušová, D., Kuzmík, J., : Effect of HCl pretreatment on the oxide/semiconductor interface state density in AlGaN/GaN MOS-HEMT structures with MOCVD grown Al2O3 gate dielectric In: ASDAM 2016. Eds. Š. Haščík et al. IEEE 2016. ISBN 978-1-5090-3081-1. P. 207-211.

Ťapajna, M., Válik, L., Gregušová, D., Fröhlich, K., Gucmann, F., Hashizume, T., Kuzmík, J., : Treshold voltage instabilities in AlGaN/GaN MOS-HEMTs with ALD-grown Al2O3 gate dielectrics: relation to distribution of oxide/semiconductor interface state density In: ASDAM 2016. Eds. Š. Haščík et al. IEEE 2016. ISBN 978-1-5090-3081-1. P. 1-4.

2015

Gucmann, F., Kúdela, R., Dobročka, E., Mičušík, M., Rosová, A., Novák, J., Gregušová, D., : III-As heterostructure field-effect transistors with recessed ex-situ gate oxide In: 18. Škola vákuovej techniky: Nanosvet s vákuom. Bratislava: SVS, 2015. ISBN 978-80-971179-6-2. S. 27-30.

Gucmann, F., Kúdela, R., Kordoš, P., Dobročka, E., Gaži, Š., Dérer, J., Liday, J., Vogrinčič, P., Gregušová, D., : III-As heterostructure field-effect transistors with recessed ex-situ gate oxide by O2 plasma-oxidized GaAs cap. J. Vacuum Sci Technol. B 33 (2015) 01A111.

Gregušová, D., Kúdela, R., Gucmann, F., Stoklas, R., Blaho, M., Ťapajna, M., Kordoš, P., Fröhlich, K., : Technology and application of in-situ alox layers on III-V semiconductors. In: Progress in Applied Surface, Interface and Thin Film Sci. 2015 – SURFINT-SREN IV. Extend. Abstract Book. Ed. R. Brunner. Bratislava: CU 2015. ISBN: 978-80-223-3975-9. P. 58.

2014

Gucmann, F., Kúdela, R., Fröhlich, K., Liday, J., Vogrinčič, P., Gaži, Š., Stoklas, R., Kordoš, P., Novák, J., Gregušová, D., : III-As high electron mobility transistors with recessed ex-situ gate oxide In: Proc. ADEPT. 2st Inter. Conf. on Advan. in Electronic and Photonic Technol. Eds. D. Pudis et al. Žilina: Univ. Žilina 2014. ISBN 978-80-554-0881-1. P. 5-8.

Gucmann, F., Gregušová, D., Stoklas, R., Dérer, J., Kúdela, R., Fröhlich, K., Kordoš, P., : InGaAs/GaAs metal-oxide-semiconductor heterostructure field-effect transistors with oxygen-plasma oxide and Al2O3 double-layer insulator. Applied Phys. Lett. 105 (2014) 183504.

Ščepka, T., Šoltýs, J., Precner, M., Fedor, J., Tóbik, J., Gregušová, D., Gucmann, F., Kúdela, R., Cambel, V., : Vortex dynamics in ferromagnetic nanoelements observed by micro-hall probes. Acta Phys. Polonica A 126 (2014) 390-391.

2012

Válik, L., Ťapajna, M., Gucmann, F., Fedor, J., Šiffalovič, P., Fröhlich, K., : Distribution of fixed charge in MOS structures with ALD grown Al2O3 studied by capacitance measurements. In: ASDAM 2012. Eds. Š. Haščík, J. Osvald. Piscataway: IEEE 2012. ISBN 978-1-4673-1195-3. P. 227-230.

Precner, M., Gregušová, D., Šoltýs, J., Fedor, J., Gucmann, F., Tóbik, J., Kúdela, R., Cambel, V., : Nucleation and annihilation of magnetic vortices in Pacman-like nanodots observed by micro-Hall probes. In: ASDAM 2012. Eds. Š. Haščík, J. Osvald. Piscataway: IEEE 2012. ISBN 978-1-4673-1195-3. P. 87-90.

Fröhlich, K., Mičušík, M., Dobročka, E., Šiffalovič, P., Gucmann, F., Fedor, J., : Properties of Al2O3 thin films grown by atomic layer deposition. In: ASDAM 2012. Eds. Š. Haščík, J. Osvald. Piscataway: IEEE 2012. ISBN 978-1-4673-1195-3. P. 171-174.

Rodière, P., Klein, T., Lemberger, L., Hasselbach, K., Demuer, A., Kačmarčík, J., Wang, Z., Luo, H., Lu, X., Wen, H., Gucmann, F., Marcenat, C., : Scaling of the physical properties in Ba(Fe,Ni)2As2 single crystals: Evidence for quantum fluctuations. Phys. Rev. B 85 (2012) 214506.

Gregušová, D., Kúdela, R., Stoklas, R., Blaho, M., Gucmann, F., Fedor, J., Kordoš, P., : The influence of an AlOx film in-situ deposited on the GaAs-based HFETs properties. In: ASDAM 2012. Eds. Š. Haščík, J. Osvald. Piscataway: IEEE 2012. ISBN 978-1-4673-1195-3. P. 107-110.

Ing. Filip GUCMANN