TY - JOUR AU - Datz, Dániel AU - Németh, Gergely AU - Rátkai, László AU - Pekker, Áron AU - Kamarás, Katalin TI - Generalized Mie Theory for Full-Wave Numerical Calculations of Scattering Near-Field Optical Microscopy with Arbitrary Geometries JF - PHYSICA STATUS SOLIDI - RAPID RESEARCH LETTERS J2 - PHYS STATUS SOLIDI-R VL - 18 PY - 2024 IS - 4 PG - 6 SN - 1862-6254 DO - 10.1002/pssr.202300370 UR - https://m2.mtmt.hu/api/publication/34441266 ID - 34441266 LA - English DB - MTMT ER - TY - JOUR AU - Lázár, Anett AU - Molnár, Zsombor AU - Demény, Attila AU - Kótai, László AU - Trif, László AU - Béres, Kende Attila AU - Bódis, Eszter AU - Bortel, Gábor AU - Aradi, László Előd AU - Karlik, Máté AU - Szabó, Máté Zoltán AU - Pekker, Áron AU - Németh, Gergely AU - Kamarás, Katalin AU - Garvie, L.A.J. AU - Németh, Péter TI - Insights into the amorphous calcium carbonate (ACC) → ikaite → calcite transformations JF - CRYSTENGCOMM J2 - CRYSTENGCOMM VL - 25 PY - 2023 IS - 3 SP - 738 EP - 750 PG - 13 SN - 1466-8033 DO - 10.1039/d2ce01444k UR - https://m2.mtmt.hu/api/publication/33606758 ID - 33606758 LA - English DB - MTMT ER - TY - JOUR AU - Cadena Nogales, Ana Cristina AU - Pekker, Áron AU - Botka, Bea AU - Dodony, Erzsébet AU - Fogarassy, Zsolt AU - Pécz, Béla AU - Kamarás, Katalin TI - Encapsulation of the Graphene Nanoribbon Precursor 1, 2, 4‐trichlorobenzene in Boron Nitride Nanotubes at Room Temperature JF - PHYSICA STATUS SOLIDI - RAPID RESEARCH LETTERS J2 - PHYS STATUS SOLIDI-R VL - 17 PY - 2023 IS - 1 PG - 5 SN - 1862-6254 DO - 10.1002/pssr.202200284 UR - https://m2.mtmt.hu/api/publication/33138741 ID - 33138741 LA - English DB - MTMT ER - TY - JOUR AU - Pálinkás, András AU - Kálvin, György AU - Vancsó, Péter AU - Kandrai, Konrád AU - Szendrő, Márton AU - Németh, Gergely AU - Németh, Miklós AU - Pekker, Áron AU - Pap, József Sándor AU - Petrik, Péter AU - Kamarás, Katalin AU - Tapasztó, Levente AU - Nemes Incze, Péter TI - The composition and structure of the ubiquitous hydrocarbon contamination on van der Waals materials JF - NATURE COMMUNICATIONS J2 - NAT COMMUN VL - 13 PY - 2022 IS - 1 PG - 10 SN - 2041-1723 DO - 10.1038/s41467-022-34641-7 UR - https://m2.mtmt.hu/api/publication/33226497 ID - 33226497 AB - The behavior of single layer van der Waals (vdW) materials is profoundly influenced by the immediate atomic environment at their surface, a prime example being the myriad of emergent properties in artificial heterostructures. Equally significant are adsorbates deposited onto their surface from ambient. While vdW interfaces are well understood, our knowledge regarding atmospheric contamination is severely limited. Here we show that the common ambient contamination on the surface of: graphene, graphite, hBN and MoS2 is composed of a self-organized molecular layer, which forms during a few days of ambient exposure. Using low-temperature STM measurements we image the atomic structure of this adlayer and in combination with infrared spectroscopy identify the contaminant molecules as normal alkanes with lengths of 20-26 carbon atoms. Through its ability to self-organize, the alkane layer displaces the manifold other airborne contaminant species, capping the surface of vdW materials and possibly dominating their interaction with the environment. LA - English DB - MTMT ER - TY - JOUR AU - Cadena Nogales, Ana Cristina AU - Botka, Bea AU - Pekker, Áron AU - Tschannen, CD AU - Lombardo, C AU - Novotny, L AU - Khlobystov, AN AU - Kamarás, Katalin TI - Molecular Encapsulation from the Liquid Phase and Graphene Nanoribbon Growth in Carbon Nanotubes JF - JOURNAL OF PHYSICAL CHEMISTRY LETTERS J2 - J PHYS CHEM LETT VL - 13 PY - 2022 IS - 41 SP - 9752 EP - 9758 PG - 7 SN - 1948-7185 DO - 10.1021/acs.jpclett.2c02046 UR - https://m2.mtmt.hu/api/publication/33200914 ID - 33200914 LA - English DB - MTMT ER - TY - JOUR AU - Özeren, Mehmet Derya AU - Pekker, Áron AU - Kamarás, Katalin AU - Botka, Bea TI - Evaluation of surface passivating solvents for single and mixed halide perovskites JF - RSC ADVANCES J2 - RSC ADV VL - 12 PY - 2022 IS - 44 SP - 28853 EP - 28861 PG - 9 SN - 2046-2069 DO - 10.1039/d2ra04278a UR - https://m2.mtmt.hu/api/publication/33168634 ID - 33168634 AB - Surface passivation is one of the commonly used approaches to reduce the density of defects on the surfaces and interfaces hindering the performance and stability of perovskite optoelectronic devices. Although surface passivation leads to performance improvement for the targeted devices, details of the complex intermolecular interactions occurring between the molecules and perovskites are not entirely known. Here, we investigated a variety of commonly used solvents in the post-processing of perovskites by using photoluminescence (PL) spectroscopy on single and mixed halide perovskites (MAPbI(3), MAPbBr(3) and MAPb(Br0.5I0.5)(3)). Our results show that solvents with medium and low Gutmann donor and acceptor numbers provide PL intensity increase for both single halide perovskites by passivating the surface defect sites. Among the single halide perovskites, MAPbBr(3) is more attracted to hydrogen bonding solvents, in contrast to MAPbI(3) that is preferred by Lewis bases. This halide selective attraction also has an influence on the mixed-halide composition. Identifying these interaction mechanisms provides new insights into passivating the surface of perovskites for future device design. LA - English DB - MTMT ER - TY - JOUR AU - Németh, Gergely AU - Otsuka, K. AU - Datz, Dániel AU - Pekker, Áron AU - Maruyama, S. AU - Borondics, F. AU - Kamarás, Katalin TI - Direct Visualization of Ultrastrong Coupling between Luttinger-Liquid Plasmons and Phonon Polaritons JF - NANO LETTERS J2 - NANO LETT VL - 22 PY - 2022 IS - 8 SP - 3495 EP - 3502 PG - 8 SN - 1530-6984 DO - 10.1021/acs.nanolett.1c04807 UR - https://m2.mtmt.hu/api/publication/32785441 ID - 32785441 LA - English DB - MTMT ER - TY - JOUR AU - Abdel-Aal, S.K. AU - Bortel, Gábor AU - Pekker, Áron AU - Kamarás, Katalin AU - Faigel, Gyula AU - Abdel-Rahman, A.S. TI - Structure investigation and vibrational spectroscopy of two prospective hybrid perovskites based on Mn and Co JF - JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS J2 - J PHYS CHEM SOLIDS VL - 161 PY - 2022 PG - 6 SN - 0022-3697 DO - 10.1016/j.jpcs.2021.110400 UR - https://m2.mtmt.hu/api/publication/32456617 ID - 32456617 LA - English DB - MTMT ER - TY - JOUR AU - Abdel-Aal, SK AU - Abdel-Rahman, AS AU - Bortel, Gábor AU - Pekker, Áron AU - Kamarás, Katalin AU - Faigel, Gyula TI - Fascinating structure and physical properties of lead-free hybrid perovskites for multifunctional applications JF - ACTA CRYSTALLOGRAPHICA SECTION A: FOUNDATIONS AND ADVANCES J2 - ACTA CRYSTALLOGR A FOUND ADV VL - 77 PY - 2021 SP - C754 EP - C754 PG - 1 SN - 2053-2733 UR - https://m2.mtmt.hu/api/publication/34038583 ID - 34038583 LA - English DB - MTMT ER - TY - JOUR AU - Abdel-Rahman, AS AU - Abdel-Aal, SK AU - Faigel, Gyula AU - Kamarás, Katalin AU - Bortel, Gábor AU - Pekker, Áron TI - Vibrational spectroscopy as a confirmation method for structural analysis JF - ACTA CRYSTALLOGRAPHICA SECTION A: FOUNDATIONS AND ADVANCES J2 - ACTA CRYSTALLOGR A FOUND ADV VL - 77 PY - 2021 SP - C956 EP - C956 PG - 1 SN - 2053-2733 UR - https://m2.mtmt.hu/api/publication/32765949 ID - 32765949 LA - English DB - MTMT ER -