Zobrazeno 1 - 10
of 112
pro vyhledávání: '"V. Parvan"'
Autor:
V. Parvan, Sudhir K. Sahoo, Iver Lauermann, Dieter Greiner, Yajie Wang, Binoy Chacko, I. Majumdar, Thomas D. Kühne, Hossein Mirhosseini, Rutger Schlatmann
In this work, the alkali induced chemical and electronic modifications observed at the KF and RbF treated Cu In,Ga Se2 CIGSe CdS interfaces are correlated to a Density Functional Theoretical DFT model of the alkali metal induced point defects at a Cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::639bef733eb95a49610d13efab301bbf
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=102254
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=102254
Sodium is known to play a crucial role in thin-film solar cells based on Cu(In,Ga)Se2 (CIGSe) absorbers, however, the chemical state of Na in CIGSe is still under discussion. In this work, an Auger parameter analysis has been carried out to identify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe7efff9a197491e07baec4f2bd78384
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=101707
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=101707
Autor:
Wolfram Calvet, V. Parvan, Bünyamin Ümsür, E. Avancini, A. Mizrak, Iver Lauermann, Thomas Dittrich, Christian A. Kaufmann, I. Majumdar, Dieter Greiner
Either metallic Na or NaF were deposited onto Cu(In,Ga)Se2 surfaces and studied by photoelectron spectroscopy and surface photovoltage spectroscopy without breaking the ultra-high vacuum. The deposition of elemental Na at room temperature led to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cca64ad6c4d5e19db9693584be951c8f
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=96192
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=96192
Comparative study of the opportunity to use Renewable Energy Sources to supply Residential Consumers
Publikováno v:
Renewable Energy and Power Quality Journal. :81-85
Taking into account the directions of the European Union, concerning the increasing role of renewable power sources for supplying loads and reduction of CO2 emission, this paper presents details of the technical and economic characteristics of the ma
Publikováno v:
Fixed Point Theory and Algorithms for Sciences and Engineering, Vol 2022, Iss 1, Pp 1-14 (2022)
Abstract In this paper, we prove some common coupled fixed-point theorems on complete C ⋆ $\mathscr{C}^{\star}$ -algebra-valued partial b-metric spaces. Some of the well-known facts in the literature are generalized and expanded by the results show
Externí odkaz:
https://doaj.org/article/718792f96a784dc4b657331191f27bc9
Autor:
Binoy Chacko, Boris V. Senkovskiy, V. Parvan, Alexander Steigert, Haibing Xie, Iver Lauermann, Martha Ch. Lux-Steiner, Edgardo Saucedo, Mihaela Gorgoi, Bünyamin Ümsür, Wolfram Calvet, Markus Neuschitzer, Tetiana Olar
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
Kesterite Cu2ZnSn(S,Se)4 absorber layers with different [S]/([S]+[Se]) ratios were studied using XPS, UPS, Hard X-ray (HIKE) photoemission and the Near Edge X-ray Absorption Fine Structure spectroscopy (NEXAFS). The samples were prepared by IREC usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6c29e418eac395dbb0662870137a615
https://hdl.handle.net/2117/102653
https://hdl.handle.net/2117/102653
Autor:
Laura Elisa Valle-Rios, Edgardo Saucedo, Binoy Chacko, V. Parvan, Wolfram Calvet, K. Neldner, Iver Lauermann, Martha Ch. Lux-Steiner, Susan Schorr, Bünyamin Ümsür, Tetiana Olar, Haibing Xie, Claudia Draxl, Archana Manoharan
Publikováno v:
Semiconductor Science and Technology. 32:104010
Publikováno v:
Journal of Physics D: Applied Physics. 49:205302
The behavior of CdGa2S4 and CdGa2Se4 single crystalline semiconductors under Berkovich indentation of the (1 1 2) face in the load range of 10–700 mN has been investigated. Values of hardness and Young's modulus have been determined for this load r
Publikováno v:
Advances in Difference Equations, Vol 2021, Iss 1, Pp 1-12 (2021)
Abstract In this paper, a Lie symmetry method is used for the nonlinear generalized Camassa–Holm equation and as a result reduction of the order and computing the conservation laws are presented. Furthermore, μ-symmetry and μ-conservation laws of
Externí odkaz:
https://doaj.org/article/6d3a011cbf8a4f92a329f184c02bb38c
Publikováno v:
Fixed Point Theory and Applications, Vol 2019, Iss 1, Pp 1-20 (2019)
Abstract In this paper, we introduce the structure of Sp $S_{p}$-metric spaces as a generalization of both S-metric and Sb $S_{b}$-metric spaces. Also, we present the notions of S̃-contractive mappings in the setup of ordered Sp $S_{p}$-metric space
Externí odkaz:
https://doaj.org/article/5cc530e73b554fd193822eca95086062