SOLARIS National Synchrotron Radiation Centre in Krakow, Poland

Szlachetko, Jakub; Szade, J.; Beyer, Edyta; Błachucki, Wojciech; Ciochoń, Piotr; Dumas, Paul; Freindl, K.; Gazdowicz, Grzegorz; Glatt, Sebastian; Guła, Krzysztof; Hormes, J.; Indyka, Paulina; Klonecka, Agnieszka; Kołodziej, Jacek; Kołodziej, T.; Korecki, J.; Korecki, P.; Kosiorowski, Filip; Kosowska, Karolina; Kowalski, Grzegorz; Kozak, Maciej; Koziol, Paulina; Kwiatek, Wojciech M.; Liberda, Danuta; Lichtenberg, Henning; Madej, Ewa; Mandziak, Anna; Marendziak, Andrzej; Matlak, K.; Maximenko, Alexey; Nita, Paweł; Olszowska, Natalia; Panaś, Roman; Partyka-Jankowska, E.; Piszak, Marcel; Prange, Alexander; Rawski, Michał; Roman, Maciej; Rosmus, Marcin; Sikora, Marcin; Sławek, Joanna; Sobol, Tomasz; Sowa, Katarzyna; Spiridis, N.; Stȩpień, Joanna; Szczepanik, Magdalena; Ślęzak, T.; Tyliszczak, Tolek; Ważny, Grzegorz; Wiechecki, Jarosław; Wilgocka-Ślęzak, D.; Wolanin, Barbara; Wróbel, Paweł; Wróbel, Tomasz P.; Zając, M.; Wawrzyniak, Adriana; Stankiewicz, Marek

doi:10.1140/epjp/s13360-022-03592-9

Cited by 19 publications

(12 citation statements)

References 45 publications

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“…The magnetic properties of NiO and Fe layers were characterized by means of X-ray Magnetic Linear Dichroism (XMLD) and X-ray Magnetic Circular Dichroism (XMCD), respectively. The X-ray absorption spectroscopy (XAS) measurements were performed at the PIRX beamline 39 of the National Synchrotron Radiation Centre SOLARIS 40 . The XAS spectra were obtained in total electron yield (TEY) mode by measuring the sample current.…”

Section: Methodsmentioning

confidence: 99%

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Janus

Ślęzak

et al. 2023

Sci Rep

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We report on the magnetic properties of antiferromagnetic NiO(001) thin films in epitaxially grown NiO/MgO(dMgO)/Cr/MgO(001) system for different thicknesses of MgO, dMgO. Results of X-ray Magnetic Linear Dichroism show that together with an increase of dMgO, rotation of NiO spins from in-plane towards out-of-plane direction occurs. Furthermore, we investigated how the proximity of Fe modifies the magnetic state of NiO in Fe/NiO/MgO(dMgO)/Cr/MgO(001). We proved the existence of a multidomain state in NiO as a result of competition between the ferromagnet/antiferromagnet exchange coupling and strain exerted on the NiO by the MgO buffer layer.

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Section: Methodsmentioning

confidence: 99%

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Janus

Ślęzak

et al. 2023

Sci Rep

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“…X-ray absorption near-edge spectroscopic (XANES) measurements have been performed for Zn L 2,3 and O K edges in total electron yield (TEY) detection mode at the PIRX beamline 22 in the SOLARIS synchrotron, Poland. 23 Measurements were performed with unpolarized light and with a perpendicular incidence upon the sample surface.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Surface oxidation states were investigated with an ESCA-5000 (Physical Electronics) Versa Probe system using an Al Kα (1486.7 eV) beam attached to a 124 mm hemispherical electron analyzer. X-ray absorption near-edge spectroscopic (XANES) measurements have been performed for Zn L 2,3 and O K edges in total electron yield (TEY) detection mode at the PIRX beamline in the SOLARIS synchrotron, Poland . Measurements were performed with unpolarized light and with a perpendicular incidence upon the sample surface.…”

Section: Experimental Methodsmentioning

confidence: 99%

Impact of Synthesis Parameters upon the Electronic Structure in PVD-Deposited Cd_xZn_1–xO Composite Thin Films: An XPS-XANES Investigation

Das,

Partyka-Jankowska,

Zając

et al. 2024

ACS Omega

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The impact of different synthesis parameters, such as thickness, postsynthesis annealing temperature, and oxygen gas flow rate, upon the electronic structure is discussed in detail in the present experimental investigation. X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES) spectroscopy techniques are used to evaluate the surface electronic properties along with the presence and stability of the CdO 2 surface oxide in Cd x Zn 1−x O (x = 0.4) composite thin films. The thin films were synthesized with varying thicknesses using a Cd 0.4 Zn 0.6 O (CZO) ceramic and Cd 0.4 Zn 0.6 (CZ) metallic targets and oxygen gas flow rates during magnetron sputtering. The Zn L 3,2 edge and O K edge XANES spectra are affected by the oxygen gas flow rate. For the zero rate, an increase in intensity is observed in the Zn L 3,2 edge, and notable changes occur in the overall spectral features of the O K edge. In the films synthesized in the presence of oxygen, highly probable O 2p → antibonding Zn 3d electronic transitions decrease the probability of the Zn 2p 1/2 → antibonding Zn 3d electronic transition by filling the vacant antibonding Zn 3d states, leading to the reduction in overall intensity in the Zn L 3,2 edge. Scanning electron microscopy reveals grain growth with increasing annealing temperature. The annealing induces orbital hybridization, generating new electronic states with higher transition probabilities and intensity enhancement in both Zn L 3,2 and O K edges. The presence of the CdO 2 surface phase is confirmed by analyzing the Cd 3d 5/2 and O 1s XPS core levels. The CdO 2 surface phase is observed in the films synthesized using the CZO target for all thicknesses, while the CZ target is only observed for higher thicknesses. Further postsynthesis annealing treatment results in the disappearance of the CdO 2 phase. The CdO 2 surface phase can be controlled by varying the film thickness and postsynthesis annealing temperature.

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“…To keep constancy and accuracy, the samples from the same batch were measured at synchrotron centers within 10 days of sample preparation. SOXPES and XAS were performed at the National Synchrotron Radiation Centre SOLARIS, Poland, at the PHELIX beamline . The X-ray of 880 eV excitation energy was incident on the sample surface, and the photoelectrons were collected onto the analyzer at a takeoff angle of 90°.…”

Section: Methodsmentioning

confidence: 99%

Unraveling the Role of Perovskite in Buried Interface Passivation

Das,

Roy,

Kedia

et al. 2023

ACS Appl. Mater. Interfaces

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Interfaces in perovskite solar cells play a crucial role in their overall performance, and therefore, detailed fundamental studies are needed for a better understanding. In the case of the classical n–i–p architecture, TiO 2 is one of the most used electron-selective layers and can induce chemical reactions that influence the performance of the overall device stack. The interfacial properties at the TiO 2 /perovskite interface are often neglected, owing to the difficulty in accessing this interface. Here, we use X-rays of variable energies to study the interface of (compact and mesoporous) TiO 2 /perovskite in such a n–i–p architecture. The X-ray photoelectron spectroscopy and X-ray absorption spectroscopy methods show that the defect states present in the TiO 2 layer are passivated by a chemical interaction of the perovskite precursor solution during the formation of the perovskite layer and form an organic layer at the interface. Such passivation of intrinsic defects in TiO 2 removes charge recombination centers and shifts the bands upward. Therefore, interface defect passivation by oxidation of Ti 3+ states, the organic cation layer, and an upward band bending at the TiO 2 /perovskite interface explain the origin of an improved electron extraction and hole-blocking nature of TiO 2 in the n–i–p perovskite solar cells.

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SOLARIS National Synchrotron Radiation Centre in Krakow, Poland

Cited by 19 publications

References 45 publications

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Impact of Synthesis Parameters upon the Electronic Structure in PVD-Deposited Cd_xZn_1–xO Composite Thin Films: An XPS-XANES Investigation

Unraveling the Role of Perovskite in Buried Interface Passivation

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SOLARIS National Synchrotron Radiation Centre in Krakow, Poland

Cited by 19 publications

References 45 publications

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Tunable magnetic anisotropy of antiferromagnetic NiO in (Fe)/NiO/MgO/Cr/MgO(001) epitaxial multilayers

Impact of Synthesis Parameters upon the Electronic Structure in PVD-Deposited CdxZn1–xO Composite Thin Films: An XPS-XANES Investigation

Unraveling the Role of Perovskite in Buried Interface Passivation

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Impact of Synthesis Parameters upon the Electronic Structure in PVD-Deposited Cd_xZn_1–xO Composite Thin Films: An XPS-XANES Investigation