Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Toma, Stoica"'
Autor:
Ioana Dascalescu, Catalin Palade, Adrian Slav, Ionel Stavarache, Ovidiu Cojocaru, Valentin Serban Teodorescu, Valentin-Adrian Maraloiu, Ana-Maria Lepadatu, Magdalena Lidia Ciurea, Toma Stoica
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract SiGeSn nanocrystals (NCs) in oxides are of considerable interest for photo-effect applications due to the fine-tuning of the optical bandgap by quantum confinement in NCs. We present a detailed study regarding the silicon germanium tin (SiGe
Externí odkaz:
https://doaj.org/article/b5b9061060d04fdda2babc0411e23920
Autor:
Ovidiu Cojocaru, Ana-Maria Lepadatu, George Alexandru Nemnes, Toma Stoica, Magdalena Lidia Ciurea
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract We present a detailed study regarding the bandgap dependence on diameter and composition of spherical Ge-rich Ge x Si1−x nanocrystals (NCs). For this, we conducted a series of atomistic density functional theory (DFT) calculations on H-pas
Externí odkaz:
https://doaj.org/article/c3f5e3877bb3438fa7f5827470cbc551
Autor:
Catalin Palade, Ana-Maria Lepadatu, Adrian Slav, Valentin Serban Teodorescu, Toma Stoica, Magdalena Lidia Ciurea, Doru Ursutiu, Cornel Samoila
Publikováno v:
Materials, Vol 14, Iss 22, p 7040 (2021)
Group IV nanocrystals (NCs), in particular from the Si–Ge system, are of high interest for Si photonics applications. Ge-rich SiGe NCs embedded in nanocrystallized HfO2 were obtained by magnetron sputtering deposition followed by rapid thermal anne
Externí odkaz:
https://doaj.org/article/c6011a9370384f2894af748a47ad2511
Publikováno v:
Sensors, Vol 20, Iss 21, p 6395 (2020)
One of the key elements in assessing traffic safety on the roads is the detection of asphalt conditions. In this paper, we propose an optical sensor based on GeSi nanocrystals embedded in SiO2 matrix that discriminates between different slippery road
Externí odkaz:
https://doaj.org/article/22fac136ed3f4edf9a60939ff76c1ff4
Autor:
Nils von den Driesch, C. L. Manganelli, Marvin Hartwig Zoellner, Toma Stoica, Agnieszka Anna Corley-Wiciak, Giovanni Capellini, Detlev Grützmacher, Davide Spirito, Zoran Ikonic, Dan Buca
Publikováno v:
ACS applied energy materials 4(7), 7385-7392 (2021). doi:10.1021/acsaem.1c01576
Energy harvesting for Internet of Things applications, comprising sensing, life sciences, wearables, and communications, requires efficient thermoelectric (TE) materials, ideally semiconductors compatible with Si technology. In this work, we investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::549c3942b0ce6a127cd1367983ccce35
https://doi.org/10.1021/acsaem.1c01576
https://doi.org/10.1021/acsaem.1c01576
Autor:
Alin Iuga, Maria Dinescu, Toma Stoica, Ana-Maria Lepadatu, A. Slav, O. Cojocaru, Valentin Adrian Maraloiu, Magdalena Lidia Ciurea, Antoniu Moldovan, C. Palade, Valentin S. Teodorescu
Publikováno v:
Journal of Materials Chemistry C. 9:12353-12366
Orthorhombic HfO2 exhibits nanoscale ferroelectricity that opens the perspective of ultra-scalable CMOS integration of ferroelectric memories. However, many aspects of the metastable orthorhombic crystallization mechanisms still need to be elucidated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17c3c9225c33bfff2aac0d7bbcbe334a
https://doi.org/10.1039/d1tc02921e
https://doi.org/10.1039/d1tc02921e
Autor:
Sorina Iftimie, H. Stroescu, Toma Stoica, Magdalena Lidia Ciurea, Mariuca Gartner, C. Palade, A. Slav, Mariana Braic, Valentin S. Teodorescu, Nicolae Catalin Zoita, Dan Buca, I. Dascalescu, Sorina Lazanu, Ana-Maria Lepadatu
Publikováno v:
ACS Applied Materials & Interfaces. 12:56161-56171
The development of short-wave infrared (SWIR) photonics based on GeSn alloys is of high technological interest for many application fields, such as the Internet of things or pollution monitoring. The manufacture of crystalline GeSn is a major challen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7570e55d6a45c04eb80d7ddd667a9f08
https://doi.org/10.1021/acsami.0c15887
https://doi.org/10.1021/acsami.0c15887
Autor:
Sorina Iftimie, Toma Stoica, Florin Comanescu, C. Palade, Ana-Maria Lepadatu, Valentin S. Teodorescu, Adrian Dinescu, A. Slav, O. Cojocaru, Valentin-Adrian Maraloiu, Magdalena Lidia Ciurea
Publikováno v:
The Journal of Physical Chemistry C. 124:25043-25053
Continuous development of Si photonics requires ecological and cost-effective materials. In this work, SiGe nanocrystals (NCs) embedded in TiO2 are investigated as a photosensitive material for vis...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6bfb2f706a05fd40afa93f7de6c8367
https://doi.org/10.1021/acs.jpcc.0c06290
https://doi.org/10.1021/acs.jpcc.0c06290
Autor:
Sorina Iftimie, Elena Matei, Dan Buca, A. Slav, Florin Comanescu, C. Palade, Ana-Maria Lepadatu, Valentin S. Teodorescu, Mariana Braic, Sorina Lazanu, Magdalena Lidia Ciurea, Nicolae Catalin Zoita, Toma Stoica, I. Dascalescu
Publikováno v:
ACS Applied Materials & Interfaces. 12:33879-33886
GeSn alloys have the potential of extending the Si photonics functionality in shortwave infrared (SWIR) light emission and detection. Epitaxial GeSn layers were deposited on a relaxed Ge buffer on Si(100) wafer by using high power impulse magnetron s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1378daeb10126040e11a787a2cfe98f1
https://doi.org/10.1021/acsami.0c06212
https://doi.org/10.1021/acsami.0c06212
Autor:
Doru Ursutiu, C. Palade, Ana-Maria Lepadatu, Magdalena Lidia Ciurea, Cornel Samoila, Valentin S. Teodorescu, A. Slav, Toma Stoica
Publikováno v:
Materials, Vol 14, Iss 7040, p 7040 (2021)
Materials
Volume 14
Issue 22
Materials
Volume 14
Issue 22
Group IV nanocrystals (NCs), in particular from the Si–Ge system, are of high interest for Si photonics applications. Ge-rich SiGe NCs embedded in nanocrystallized HfO2 were obtained by magnetron sputtering deposition followed by rapid thermal anne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9fc6553f57db4f7d831346fc2c1801e
https://www.mdpi.com/1996-1944/14/22/7040
https://www.mdpi.com/1996-1944/14/22/7040