Zobrazeno 1 - 10
of 384
pro vyhledávání: '"H. J. LEWERENZ"'
Autor:
S. Zoladek, Bettina Milke, Qingsheng Gao, Cristina Giordano, S. Fiechter, A. Ramirez, H. J. Lewerenz, P. J. Kulesza, A. Zurowski, Katarzyna Skorupska
Publikováno v:
ECS Transactions. 58:1-7
The successful preparation of a nanohybrid electrode made from Ta3N5 nanoparticle powders interlinked by Nafion is described. The basic photoelectrochemical properties as anode for water photolysis are investigated and gas evolution as well as corros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::493ba6b66d44970d68d8370efe3d5871
https://doi.org/10.1149/05830.0001ecst
https://doi.org/10.1149/05830.0001ecst
Publikováno v:
physica status solidi c. 8:1734-1738
The oxide structure formation process at the Si/electrolyte contact is considered during the anodic oxidation of n-type silicon in fluoride containing solution. The morphological model is characterized by stress, cracks, nanopores and assumes two typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53c62c3df215ea2b0ed2ee235a6af18a
https://doi.org/10.1002/pssc.201000030
https://doi.org/10.1002/pssc.201000030
Publikováno v:
physica status solidi (b). 248:361-369
Topographical and electronic and properties of step bunched Si(111), prepared by electrochemical processing in alkaline solution, are analyzed. Tapping mode atomic force microscopy (TM AFM) analysis shows that one bunched step consists of about 15 at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbffee76712cc8ccd3a95ff68134ea47
https://doi.org/10.1002/pssb.201046454
https://doi.org/10.1002/pssb.201046454
Publikováno v:
physica status solidi c. 6:1639-1643
A cellular automata is introduced to model the locally resolved oxide thickness, the stress, and the etching rate dynamics at the silicon electrolyte contact along a macroscopically long line (1 mm). Short- and long-range interaction mechanisms are c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08790198e13f40aa55a6800e70f639c2
https://doi.org/10.1002/pssc.200881028
https://doi.org/10.1002/pssc.200881028
Publikováno v:
Journal of Solid State Electrochemistry. 13:185-194
Photoelectrochemically prepared nanotopographies on semiconductors are used for realization of nanoemitter solar devices that are active in the photovoltaic and the photoelectrocatalytic mode. The development of solar devices by a nonlinear electroch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbd8121cf91438425e2e36a8d37c6b9b
https://doi.org/10.1007/s10008-008-0640-1
https://doi.org/10.1007/s10008-008-0640-1
Autor:
H.-J. Lewerenz
Publikováno v:
Transactions of the IMF. 86:19-33
Self-organised electrochemical processes such as oscillatory currents on silicon electrodes produce surface patterns that can be used for low temperature preparation of scaleable efficient photoactive structures. Nanoporous oxides, formed during such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::611b6b19c481394de200579c84a0b660
https://doi.org/10.1179/174591908x264400
https://doi.org/10.1179/174591908x264400
Publikováno v:
physica status solidi (a). 204:1245-1249
The transition from sustained to damped current oscillations or to stationary behavior is described using a model based on morphological aspects. A roughening of the oxide and of the underlying Si surface is predicted, in accordance with measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e06cb32c2b73af3c9cebcda4bd85e03
https://doi.org/10.1002/pssa.200674301
https://doi.org/10.1002/pssa.200674301
Autor:
H.-J. Lewerenz, H. Jungblut
Photovoltaik wendet sich an Studenten aus Physik, Chemie, Elektrotechnik, Umwelttechnik u.a. nach dem Vordiplom. Die Autoren, beide anerkannte Experten auf dem Gebiet der Photovoltaik, legen in ihrem Buch besonderen Wert auf die Behandlung grundlegen
Autor:
J. Grzanna, H. J. Lewerenz
The basic process at the surface of the Si electrode is characterized by a cyclic oxidation of a thin silicon layer and the subsequent removal of the oxide by etching. Here, the oxide thickness evolves not uniformly due to cracks and nanopores. The m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f761d3678f0f7d6eabe7a8b934606ec
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=85609
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=85609
Autor:
H. J. Lewerenz
Publikováno v:
The Journal of Physical Chemistry B. 101:2421-2425
The oscillatory behavior of single crystalline n-Si(111) in dilute ammonium and sodium fluoride solutions is investigated. Simultaneous in-situ Fourier transform infrared analyses performed in the multiple internal reflection (FTIR-MIR) mode and phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faa911d83e387a077e100e69ae26cd1f
https://doi.org/10.1021/jp962694x
https://doi.org/10.1021/jp962694x