Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Wolfgang Wisniewski"'
Publikováno v:
Microscopy and Microanalysis. 27:1409-1419
Currently, the automated electron backscatter diffraction (EBSD) technique only allows the differentiation of the Laue groups based on an electron backscatter pattern (EBSP). This article shows that information concerning the lattice plane polarity i
Autor:
Wolfgang Wisniewski, Christian Rüssel
Publikováno v:
Crystal Growth & Design. 21:2405-2415
The surface crystallization of non-ferroelectric, polar crystals from a glass often leads to piezoelectric surface layers. The surface layer not only shows a crystallographic orientation preference...
Autor:
Christian Rüssel, Wolfgang Wisniewski
Publikováno v:
CrystEngComm. 23:4419-4433
Crystal engineering is a wide field aimed at producing a large range of crystalline phases in a multitude of forms suited for many specific applications. The method of electrochemically induced nucleation (EiN) enables to produce oxidic crystalline p
Publikováno v:
Progress in Materials Science. 98:68-107
The crystallization of fresnoite from glasses enables to produce a wide variety of materials including piezoelectric glass-ceramics due to the aligned growth of these crystals in the amorphous matrix. The crystal structure of fresnoite leads to inter
Publikováno v:
Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-21 (2020)
Scientific Reports, Vol 10, Iss 1, Pp 1-21 (2020)
The crystallization of glass microspheres in the Y2O3–Al2O3-system produced from precursor powders of four different nominal compositions via flame synthesis is analyzed in detail by electron microscopy with a focus on electron backscatter diffract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2f5ae76b3353099dd6fdb576dd9624e
Autor:
Gema Martínez-Criado, Claudia Schnohr, Maurizio Ritzer, Sven Schönherr, Wolfgang Wisniewski, Sergio Giraldo, Konrad Ritter, Susan Schorr, Andreas Johannes, Philipp Schöppe, Christian T. Plass, Carsten Ronning, Galina Gurieva, Edgardo Saucedo
Publikováno v:
'ACS Applied Energy Materials ', vol: 3, pages: 558-564 (2020)
The presence of Ge during the synthesis of thin film kesterite Cu2ZnSnSe4 (CZTSe) solar cell absorbers boosts their power conversion efficiency, especially due to an improved open circuit voltage. The mechanism underlying this beneficial effect of Ge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b77fe3b0cb54a74adaa2d7ccfaef1f
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=101379
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=101379
Publikováno v:
CrystEngComm. 20:3234-3245
Glasses of the mol composition 2SrO·TiO2·2SiO2 + xSiO2 (with x = 0.0, 0.2, 0.75 and 1.5 mol) were prepared. They were polished and then heat treated for 5 h or more at 830 and 970 °C during which Sr-fresnoite (Sr2TiSi2O8) solely crystallised in al
Publikováno v:
CrystEngComm. 20:5409-5421
Glasses of the mol composition 2BaO·TiO2·2GeO2 + xGeO2 (with x = 0.0, 0.2, 0.75 and 1.5 mol) were prepared, polished and crystallised at 730 and 970 °C for 5 h. All glasses showed the surface crystallisation of Ge-fresnoite (Ba2TiGe2O8) as well as
Oriented surface nucleation and crystal growth in a 18BaO·22CaO·60SiO2mol% glass used for SOFC seals
Autor:
Stefan Reinsch, Christian Thieme, Sonja-M. Groß-Barsnick, Wolfgang Wisniewski, Ralf Müller, Christian Rüssel
Publikováno v:
CrystEngComm. 20:787-795
A glass of the composition 37BaO·16CaO·47SiO2 wt% produced on an industrial scale is crystallized at 970 °C for times ranging from 15 min to 2 h. The crystallization at the immediate surface as well as the crystal growth into the bulk are analyzed
Autor:
Gema Martínez-Criado, Maurizio Ritzer, Carsten Ronning, Roland Wuerz, Sven Schönherr, Konrad Ritter, Wolfgang Wisniewski, Claudia Schnohr, Philipp Schöppe
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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Solar cells based on Cu(In,Ga)Se absorbers are the most efficient ones among all thin film photovoltaics. The current world record efficiency was attained by applying a rubidium fluoride (RbF) post deposition treatment (PDT) to the absorber. However,