Dr Roland Gillen

wch-ddarlithydd mewn Peirianneg (Addysg Drawswladol), Electronic and Electrical Engineering

roland.gillen@abertawe.ac.uk

204
Ail lawr
Adeilad Gogleddol Peirianneg
Campws y Bae

Ar gael ar gyfer Goruchwyliaeth Ôl-raddedig

Dolenni Ymchwil

https://orcid.org/0000-0002-7913-0953

Google Scholar

Scopus

Trosolwg

Derbyniodd Dr Roland Gillen ei PhD mewn Peirianneg Drydanol ac Electronig (EEE) o Brifysgol Caergrawnt a gradd gyfwerth ag MEng mewn Gwyddor Peirianneg o Brifysgol Dechnegol Berlin, yr Almaen.

Mae'n ymddiddori ym mhriodoleddau electronig, optegol a dirgrynol deunyddiau lled-ddargludol a sut gellir eu defnyddio ar gyfer dyfeisiau electronig ynni-effeithlon. I'r perwyl hwn, defnyddir dulliau sbectrosgopeg ddamcaniaethol fmodern ar gyfer nodweddu cyfrifiadol, gan ategu ymchwiliadau arbrofol yng nghyd-destun cydweithrediadau amrywiol.

Mae un pwyslais ymchwil penodol ar nanoddeunyddiau newydd un dimensiwn a dau ddimensiwn ac ar heteroadeileddau gweithredol rhwng deunyddiau lled-ddargludol.

Meysydd Arbenigedd

Damcaniaeth Swyddogaethol Dwysedd
Damcaniaeth aflonyddiad aml-gorff
Nanoddeunyddiau dimensiwn isel
Heteroadeileddau lled-ddargludol
Deunyddiau cynyrfonig

Cyhoeddiadau

Uchafbwyntiau Ymchwil

Liu, K., Zheng, W., Osella, S., Qiu, Z., Böckmann, S., Niu, W., Meingast, L., Komber, H., Obermann, S., Gillen, R., Bonn, M., Hansen, M., Maultzsch, J., Wang, H., Ma, J., & Feng, X. (2024). Cove-Edged Chiral Graphene Nanoribbons with Chirality-Dependent Bandgap and Carrier Mobility. Journal of the American Chemical Society, 146(1), 1026-1034.
https://doi.org/10.1021/jacs.3c11975, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66641
Gillen, R. & Maultzsch, J. (2024). Family behavior and Dirac bands in armchair nanoribbons with 4–8 defect lines. Journal of Physics: Condensed Matter, 36(29), 295501
https://doi.org/10.1088/1361-648x/ad3b5a, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66642
Zhao, S., Huang, X., Gillen, R., Li, Z., Liu, S., Watanabe, K., Taniguchi, T., Maultzsch, J., Hone, J., Högele, A., & Baimuratov, A. (n.d.) Hybrid Moiré Excitons and Trions in Twisted MoTe2–MoSe2 Heterobilayers. Nano Letters, 24(16)
https://doi.org/10.1021/acs.nanolett.4c00541, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66643
Wolff, S., Gillen, R., & Maultzsch, J. (2023). Electronic Properties and Interlayer Interactions in Antimony Oxide Homo‐ and Heterobilayers. physica status solidi (b), 260(12)
https://doi.org/10.1002/pssb.202300376, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66644
Kamutzki, F., Bekheet, M., Selve, S., Kampmann, F., Siemensmeyer, K., Kober, D., Gillen, R., Wagner, M., Maultzsch, J., Gurlo, A., & Hanaor, D. (2023). NaGdSi2O6 – A novel antiferromagnetically coupled silicate with Vierer chain structure. Journal of Solid State Chemistry, 317, 123677
https://doi.org/10.1016/j.jssc.2022.123677, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66645
Li, L., Gillen, R., Palummo, M., Milošević, M., & Peeters, F. (2023). Strain tunable interlayer and intralayer excitons in vertically stacked MoSe2/WSe2 heterobilayers. Applied Physics Letters, 123(3)
https://doi.org/10.1063/5.0147761, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66646
Janzen, B., Gillen, R., Galazka, Z., Maultzsch, J., & Wagner, M. (2022). First- and second-order Raman spectroscopy of monoclinic 𝛽−Ga2⁢O3. Physical Review Materials, 6(5)
https://doi.org/10.1103/physrevmaterials.6.054601, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66647
Badlyan, N., Pettinger, N., Enderlein, N., Gillen, R., Chen, X., Zhang, W., Knirsch, K., Hirsch, A., & Maultzsch, J. (2022). Oxidation and phase transition in covalently functionalized MoS2. Physical Review B, 106(10)
https://doi.org/10.1103/physrevb.106.104103, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66649
Khestanova, E., Ivanova, T., Gillen, R., D’Elia, A., Lacey, O., Wysocki, L., Grüneis, A., Kravtsov, V., Strupinski, W., Maultzsch, J., Kandyba, V., Cattelan, M., Barinov, A., Avila, J., Dudin, P., & Senkovskiy, B. (2023). Robustness of Momentum-Indirect Interlayer Excitons in MoS2/WSe2 Heterostructure against Charge Carrier Doping. ACS Photonics, 10(4)
https://doi.org/10.1021/acsphotonics.2c01930, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66650
Janzen, B., Mazzolini, P., Gillen, R., Peltason, V., Grote, L., Maultzsch, J., Fornari, R., Bierwagen, O., & Wagner, M. (2021). Comprehensive Raman study of orthorhombic κ/ε-Ga2O3 and the impact of rotational domains. Journal of Materials Chemistry C, 9(40), 14175-14189.
https://doi.org/10.1039/d1tc03500b, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66651

Holl Ymchwil

Erthyglau Cylchgronau

Gillen, R. & Maultzsch, J. (2024). Family behavior and Dirac bands in armchair nanoribbons with 4–8 defect lines. Journal of Physics: Condensed Matter, 36(29), 295501
https://doi.org/10.1088/1361-648x/ad3b5a, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66642
Liu, K., Zheng, W., Osella, S., Qiu, Z., Böckmann, S., Niu, W., Meingast, L., Komber, H., Obermann, S., Gillen, R., Bonn, M., Hansen, M., Maultzsch, J., Wang, H., Ma, J., & Feng, X. (2024). Cove-Edged Chiral Graphene Nanoribbons with Chirality-Dependent Bandgap and Carrier Mobility. Journal of the American Chemical Society, 146(1), 1026-1034.
https://doi.org/10.1021/jacs.3c11975, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66641
Wolff, S., Gillen, R., & Maultzsch, J. (2023). Electronic Properties and Interlayer Interactions in Antimony Oxide Homo‐ and Heterobilayers. physica status solidi (b), 260(12)
https://doi.org/10.1002/pssb.202300376, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66644
Li, L., Gillen, R., Palummo, M., Milošević, M., & Peeters, F. (2023). Strain tunable interlayer and intralayer excitons in vertically stacked MoSe2/WSe2 heterobilayers. Applied Physics Letters, 123(3)
https://doi.org/10.1063/5.0147761, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66646
Khestanova, E., Ivanova, T., Gillen, R., D’Elia, A., Lacey, O., Wysocki, L., Grüneis, A., Kravtsov, V., Strupinski, W., Maultzsch, J., Kandyba, V., Cattelan, M., Barinov, A., Avila, J., Dudin, P., & Senkovskiy, B. (2023). Robustness of Momentum-Indirect Interlayer Excitons in MoS2/WSe2 Heterostructure against Charge Carrier Doping. ACS Photonics, 10(4)
https://doi.org/10.1021/acsphotonics.2c01930, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66650
Kamutzki, F., Bekheet, M., Selve, S., Kampmann, F., Siemensmeyer, K., Kober, D., Gillen, R., Wagner, M., Maultzsch, J., Gurlo, A., & Hanaor, D. (2023). NaGdSi2O6 – A novel antiferromagnetically coupled silicate with Vierer chain structure. Journal of Solid State Chemistry, 317, 123677
https://doi.org/10.1016/j.jssc.2022.123677, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66645
Badlyan, N., Pettinger, N., Enderlein, N., Gillen, R., Chen, X., Zhang, W., Knirsch, K., Hirsch, A., & Maultzsch, J. (2022). Oxidation and phase transition in covalently functionalized MoS2. Physical Review B, 106(10)
https://doi.org/10.1103/physrevb.106.104103, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66649
Janzen, B., Gillen, R., Galazka, Z., Maultzsch, J., & Wagner, M. (2022). First- and second-order Raman spectroscopy of monoclinic 𝛽−Ga2⁢O3. Physical Review Materials, 6(5)
https://doi.org/10.1103/physrevmaterials.6.054601, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66647
Erkensten, D., Brem, S., Wagner, K., Gillen, R., Perea-Causín, R., Ziegler, J., Taniguchi, T., Watanabe, K., Maultzsch, J., Chernikov, A., & Malic, E. (2021). Dark exciton-exciton annihilation in monolayer WSe2. Physical Review B, 104(24)
https://doi.org/10.1103/physrevb.104.l241406, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66653
Janzen, B., Mazzolini, P., Gillen, R., Peltason, V., Grote, L., Maultzsch, J., Fornari, R., Bierwagen, O., & Wagner, M. (2021). Comprehensive Raman study of orthorhombic κ/ε-Ga2O3 and the impact of rotational domains. Journal of Materials Chemistry C, 9(40), 14175-14189.
https://doi.org/10.1039/d1tc03500b, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66651
Gillen, R. (2021). Interlayer Excitonic Spectra of Vertically Stacked MoSe2/WSe2 Heterobilayers. physica status solidi (b), 258(7)
https://doi.org/10.1002/pssb.202000614, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66654
Chen, X., Bartlam, C., Lloret, V., Badlyan, N., Wolff, S., Gillen, R., Stimpel‐Lindner, T., Maultzsch, J., Duesberg, G., Knirsch, K., & Hirsch, A. (2021). Covalent Bisfunctionalization of Two‐Dimensional Molybdenum Disulfide. Angewandte Chemie International Edition, 60(24), 13484-13492.
https://doi.org/10.1002/anie.202103353, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66652
Kampmann, F., Panchakarla, L., Gillen, R., Tenne, R., & Maultzsch, J. (2021). Vibrational Properties and Charge Transfer in the Misfit-Layer Compound LaS–CrS2. The Journal of Physical Chemistry C, 125(14), 8006-8013.
https://doi.org/10.1021/acs.jpcc.1c02187, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66656
Janzen, B., Mazzolini, P., Gillen, R., Falkenstein, A., Martin, M., Tornatzky, H., Maultzsch, J., Bierwagen, O., & Wagner, M. (2021). Isotopic study of Raman active phonon modes in β-Ga2O3. Journal of Materials Chemistry C, 9(7), 2311-2320.
https://doi.org/10.1039/d0tc04101g, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66655
Brem, S., Lin, K., Gillen, R., Bauer, J., Maultzsch, J., Lupton, J., & Malic, E. (2020). Hybridized intervalley moiré excitons and flat bands in twisted WSe2 bilayers. Nanoscale, 12(20), 11088-11094.
https://doi.org/10.1039/d0nr02160a, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66659
Merkl, P., Mooshammer, F., Brem, S., Girnghuber, A., Lin, K., Weigl, L., Liebich, M., Yong, C., Gillen, R., Maultzsch, J., Lupton, J., Malic, E., & Huber, R. (2020). Twist-tailoring Coulomb correlations in van der Waals homobilayers. Nature Communications, 11(1)
https://doi.org/10.1038/s41467-020-16069-z, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66661
Assebban, M., Gibaja, C., Fickert, M., Torres, I., Weinreich, E., Wolff, S., Gillen, R., Maultzsch, J., Varela, M., Rong, S., Loh, K., Michel, E., Zamora, F., & Abellán, G. (2020). Unveiling the oxidation behavior of liquid-phase exfoliated antimony nanosheets. 2D Materials, 7(2), 025039
https://doi.org/10.1088/2053-1583/ab755e, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66663
Wolff, S., Gillen, R., Assebban, M., Abellán, G., & Maultzsch, J. (2020). Two-Dimensional Antimony Oxide. Physical Review Letters, 124(12)
https://doi.org/10.1103/physrevlett.124.126101, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66662
Tyborski, C., Hückstaedt, T., Gillen, R., Otto, T., Fokina, N., Fokin, A., Schreiner, P., & Maultzsch, J. (2020). Vibrational signatures of diamondoid dimers with large intramolecular London dispersion interactions. Carbon, 157, 201-207.
https://doi.org/10.1016/j.carbon.2019.10.014, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66664
Karni, O., Barré, E., Lau, S., Gillen, R., Ma, E., Kim, B., Watanabe, K., Taniguchi, T., Maultzsch, J., Barmak, K., Page, R., & Heinz, T. (2019). Infrared Interlayer Exciton Emission in MoS2/WSe2 Heterostructures. Physical Review Letters, 123(24)
https://doi.org/10.1103/physrevlett.123.247402, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66665
Tornatzky, H., Gillen, R., Uchiyama, H., & Maultzsch, J. (2019). Phonon dispersion in MoS2. Physical Review B, 99(14)
https://doi.org/10.1103/physrevb.99.144309, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66666
Li, H., Xu, X., Zhang, Y., Gillen, R., Shi, L., & Robertson, J. (2018). Native point defects of semiconducting layered Bi2O2Se. Scientific Reports, 8(1)
https://doi.org/10.1038/s41598-018-29385-8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66668
Gillen, R. & Maultzsch, J. (2018). Interlayer excitons in MoSe2/WSe2 heterostructures from first principles. Physical Review B, 97(16)
https://doi.org/10.1103/physrevb.97.165306, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66667
Tyborski, C., Gillen, R., Fokin, A., Koso, T., Fokina, N., Hausmann, H., Rodionov, V., Schreiner, P., Thomsen, C., & Maultzsch, J. (2017). Electronic and Vibrational Properties of Diamondoid Oligomers. The Journal of Physical Chemistry C, 121(48), 27082-27088.
https://doi.org/10.1021/acs.jpcc.7b07666, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66669
Tyborski, C., Meinke, R., Gillen, R., Bischoff, T., Knecht, A., Richter, R., Merli, A., Fokin, A., Koso, T., Rodionov, V., Schreiner, P., Möller, T., Rander, T., Thomsen, C., & Maultzsch, J. (2017). From isolated diamondoids to a van-der-Waals crystal: A theoretical and experimental analysis of a trishomocubane and a diamantane dimer in the gas and solid phase. The Journal of Chemical Physics, 147(4)
https://doi.org/10.1063/1.4994898, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66670
Abellán, G., Wild, S., Lloret, V., Scheuschner, N., Gillen, R., Mundloch, U., Maultzsch, J., Varela, M., Hauke, F., & Hirsch, A. (2017). Fundamental Insights into the Degradation and Stabilization of Thin Layer Black Phosphorus. Journal of the American Chemical Society, 139(30), 10432-10440.
https://doi.org/10.1021/jacs.7b04971, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66671
Gillen, R. & Maultzsch, J. (2016). Light-Matter Interactions in Two-Dimensional Transition Metal Dichalcogenides: Dominant Excitonic Transitions in Mono- and Few-Layer MoX$_2$ and Band Nesting. IEEE Journal of Selected Topics in Quantum Electronics, 23(1), 219-230.
https://doi.org/10.1109/jstqe.2016.2604359, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66672
Gibaja, C., Rodriguez‐San‐Miguel, D., Ares, P., Gómez‐Herrero, J., Varela, M., Gillen, R., Maultzsch, J., Hauke, F., Hirsch, A., Abellán, G., & Zamora, F. (2016). Few‐Layer Antimonene by Liquid‐Phase Exfoliation. Angewandte Chemie International Edition, 55(46), 14345-14349.
https://doi.org/10.1002/anie.201605298, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66673
Staiger, M., Bačić, V., Gillen, R., Radovsky, G., Gartsman, K., Tenne, R., Heine, T., Maultzsch, J., & Thomsen, C. (2016). Raman spectroscopy of intercalated and misfit layer nanotubes. Physical Review B, 94(3)
https://doi.org/10.1103/physrevb.94.035430, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66674
Li, H., Gillen, R., & Robertson, J. (2016). The screening effects of the screened exchange hybrid functional in surface systems: A case study on the CO/Pt(111) problem. AIP Advances, 6(6)
https://doi.org/10.1063/1.4954032, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66676
Zhao, S., Huang, X., Gillen, R., Li, Z., Liu, S., Watanabe, K., Taniguchi, T., Maultzsch, J., Hone, J., Högele, A., & Baimuratov, A. (n.d.) Hybrid Moiré Excitons and Trions in Twisted MoTe2–MoSe2 Heterobilayers. Nano Letters, 24(16)
https://doi.org/10.1021/acs.nanolett.4c00541, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66643

Cyfraniadau Cynadleddau

Mooshammer, F., Merkl, P., Ovesen, S., Brem, S., Girnghuber, A., Lin, K., Liebich, M., Yong, C., Gillen, R., Maultzsch, J., Lupton, J., Malic, E., & Huber, R. (2021). Twist-Tailoring Hybrid Excitons In Van Der Waals Homobilayers. In 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)IEEE.
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9542072, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66657
Mooshammer, F., Merkl, P., Ovesen, S., Brem, S., Girnghuber, A., Lin, K., Liebich, M., Yong, C., Gillen, R., Maultzsch, J., Lupton, J., Malic, E., & Huber, R. (2020). Excitons in twisted van der Waals bilayers: Internal structure and ultrafast dynamics. In 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)IEEE.
https://doi.org/10.1109/irmmw-thz46771.2020.9370984, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66658
Karni, O., Barre, E., Lau, S., Gillen, R., Ma, E., Gal, L., Yaffe, T., Kim, B., Watanabe, K., Taniguchi, T., Orenstein, M., Maultzsch, J., Barmak, K., Page, R., & Heinz, T. (2020). Tunable infrared light emission from MoS2/WSe2 heterostructures. In Conference on Lasers and Electro-OpticsOptica Publishing Group.
https://doi.org/10.1364/cleo_si.2020.sm1q.1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa66660

Grantiau a Phrosiectau Allweddol

Strong interlayer interactions in two-dimensional pnictogen-based homo- and heterobilayers 2024

Prosiect ynRaglen Flaenoriaeth 2244 Sefydliad Ymchwil yr Almaen (DFG), 185.000€
Interfaces and heterostructures of quasi-two-dimensional semiconductors 2013 - 2014

Cyllid Prifysgol Dechnegol Berlin i ddechrau busnes mewnol, 44.000€

Hanes Gyrfa

Darlithydd, Adran Ffiseg, Prifysgol Friedrich-Alexander, Erlangen, yr Almaen

Gorffennaf 2022 - Chwefror 2024
Cydymaith Ymchwil, Adran Ffiseg, Prifysgol Friedrich-Alexander, Erlangen, yr Almaen

Gorffennaf 2017 - Mehefin 2022
Cydymaith Ymchwil, Sefydliad Ffiseg Cyflwr Solet, Prifysgol Dechnegol Berlin, Yr Almaen

Gorffennaf 2013 - Mehefin 2017
Myfyriwr PhD, Adran Beirianneg, Prifysgol Caergrawnt

Hydref 2009 - Gorffennaf 2013

Dr Roland Gillen

Cyfeiriad ebost

Dolenni Ymchwil

Trosolwg

Meysydd Arbenigedd

Cyhoeddiadau

Uchafbwyntiau Ymchwil

Holl Ymchwil

Erthyglau Cylchgronau

Cyfraniadau Cynadleddau

Grantiau a Phrosiectau Allweddol

Strong interlayer interactions in two-dimensional pnictogen-based homo- and heterobilayers 2024

Interfaces and heterostructures of quasi-two-dimensional semiconductors 2013 - 2014

Hanes Gyrfa

Darlithydd, Adran Ffiseg, Prifysgol Friedrich-Alexander, Erlangen, yr Almaen

Cydymaith Ymchwil, Adran Ffiseg, Prifysgol Friedrich-Alexander, Erlangen, yr Almaen

Cydymaith Ymchwil, Sefydliad Ffiseg Cyflwr Solet, Prifysgol Dechnegol Berlin, Yr Almaen

Myfyriwr PhD, Adran Beirianneg, Prifysgol Caergrawnt