Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Piotr Wojnar"'
Autor:
Kamila Ćwik, Jakub Zawadzki, Rafał Zybała, Monika Ożga, Bartłomiej Witkowski, Piotr Wojnar, Małgorzata Wolska-Pietkiewicz, Maria Jędrzejewska, Janusz Lewiński, Michał A. Borysiewicz
Publikováno v:
Compounds, Vol 4, Iss 3, Pp 534-547 (2024)
Zinc oxide (ZnO) is one of the most versatile semiconductor materials with many potential applications. Understanding the interactions between the surface chemistry of ZnO along with its physico-chemical properties are essential for the development o
Externí odkaz:
https://doaj.org/article/93f34c47148240db946c759e26d1a9a2
Autor:
Piotr Baranowski, Małgorzata Szymura, Anna Kaleta, Sławomir Kret, Maciej Wójcik, Rosen Georgiev, Sergij Chusnutdinow, Grzegorz Karczewski, Tomasz Wojtowicz, Lech Tomasz Baczewski, Piotr Wojnar
Publikováno v:
Nanoscale. 15:4143-4151
Quantum dots consisting of an axial Zn0.97Mg0.03Te insertion inside a large-bandgap Zn0.9Mg0.1Te nanowire core coated with two radial shells: ZnSe/Zn0.9Mg0.1Te. The interface between dot and ZnSe shell is characterized by type-II band alignment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d069b66c288a1995c68ea62c66abf8f3
https://doi.org/10.1039/d2nr05351a
https://doi.org/10.1039/d2nr05351a
Publikováno v:
Physical Review B. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cdd2ec2363fb1f93d4924026b3aab18
https://doi.org/10.1103/physrevb.107.075305
https://doi.org/10.1103/physrevb.107.075305
Publikováno v:
Physical Review B. 105
The structure of the ground state exciton of Cd(Se,Te) quantum dots embedded in ZnTe matrix is studied experimentally using photoluminescence spectroscopy and theoretically using ${\bf k}\cdot{\bf p}$ and configuration interaction methods. The experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ddef083ed1ca0eb8310d6c057d9a674
https://doi.org/10.1103/physrevb.105.195403
https://doi.org/10.1103/physrevb.105.195403
Autor:
Jakub Płachta, Anna Kaleta, Tomasz Wojtowicz, Piotr Wojnar, Jonas Lähnemann, G. Karczewski, Piotr Baranowski, Maciej Wójcik, Bogdan J. Kowalski, Lech T. Baczewski, Sławomir Kret, Anna Reszka
Publikováno v:
Nanotechnology. 32(49)
ZnTe/CdSe/(Zn,Mg)Te core/double-shell nanowires are grown by molecular beam epitaxy by employing the vapor-liquid-solid growth mechanism assisted with gold catalysts. A photoluminescence study of these structures reveals the presence of an optical em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdfabfdb8faa8d8cbbba56e7f79c0ca1
https://pubmed.ncbi.nlm.nih.gov/34438391
https://pubmed.ncbi.nlm.nih.gov/34438391
Autor:
Piotr Kossacki, M. Szymura, Krzysztof Fronc, S. Chusnutdinow, Tomasz Kazimierczuk, Jacek Kossut, Łukasz Kłopotowski, Piotr Wojnar, Maciej Wiater, Aleksander Rodek
Publikováno v:
The Journal of Physical Chemistry C. 123:19938-19944
Copper-doped self-assembled CdSe/ZnSe quantum dots (QDs) and (Zn,Cd)Se/ZnSe quantum wells (QWs) are grown by molecular beam epitaxy. Low-temperature luminescence properties of these structures are ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb96ad6a4ccd30951d4ea949cc08672d
https://doi.org/10.1021/acs.jpcc.9b04703
https://doi.org/10.1021/acs.jpcc.9b04703
Autor:
Piotr Kossacki, Jacek Kossut, Tomasz Wojtowicz, Piotr Wojnar, Tomasz Kazimierczuk, Anna Kaleta, Grzegorz Karczewski, Jakub Płachta, Karolina Połczyńska, Sławomir Kret
Publikováno v:
Nanotechnology. 31(21)
Wurtzite CdTe and (Cd,Mn)Te nanowires embedded in (Cd,Mg)Te shells are grown by employing vapour-liquid-solid growth mechanism in a system for molecular beam epitaxy. A combined study involving cathodoluminescence, transmission electron microscopy an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6eca66ab9e23869f3ac1886b1d64360d
https://pubmed.ncbi.nlm.nih.gov/32050170
https://pubmed.ncbi.nlm.nih.gov/32050170
Autor:
Yi Ying Chin, Lech T. Baczewski, Hua-Shu Hsu, Da-Wei Xiao, Hsiung Chou, Shih-Jye Sun, Piotr Wojnar
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 32(22)
We propose a theoretical model to investigate the magnetic properties of cobalt-doped ZnO (ZnO:Co) thin films qualitatively. The model was built on the dilute Co dopants in the host of ZnO forming the magnetic Co+2 ions and the energy level of the ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c84a0adaa98de5a56f369e8bc8a9bde
https://pubmed.ncbi.nlm.nih.gov/31968316
https://pubmed.ncbi.nlm.nih.gov/31968316
Autor:
Jakub Płachta, Boguslawa Kurowska, Sławomir Kret, A. Szczepańska, Anna Kaleta, Piotr Wojnar, Ana M. Sanchez, Marta Bilska, Tomasz Wojciechowski
Publikováno v:
Acta Physica Polonica A. 131:1399-1405
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85f7855793bb87f6502ac13b9ca5a4df
https://doi.org/10.12693/aphyspola.131.1399
https://doi.org/10.12693/aphyspola.131.1399
Giant enhancement of second harmonic light intensity in waveguiding core/shell ZnTe/ZnMgTe nanowires
Autor:
M. Szymura, D. K. Maude, Anatolie A. Mitioglu, Paulina Plochocka, Łukasz Kłopotowski, Piotr Wojnar
Publikováno v:
Applied Physics Letters. 118:192106
We present studies of second harmonic generation in core/shell ZnTe/Zn1−xMgxTe nanowires (NWs) with a waveguiding geometry. The NWs are excited by a pulsed femtosecond laser over a broad range of excitation wavelengths from 800 to 1140 nm. This all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8904dd5239d825fa92de546aad5fdf22
https://doi.org/10.1063/5.0049297
https://doi.org/10.1063/5.0049297