Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Rolf E. Hummel"'
Autor:
Rolf E. Hummel, Kwanghoon Kim
Publikováno v:
Journal of Physics and Chemistry of Solids. 69:199-205
The infrared (IR) photoluminescence (PL) emission of spark-processed silicon (sp-Si) was investigated. A broad and strong room temperature PL peak in the 945 nm (1.31 eV) spectral range was observed when sp-Si was excited with an argon laser. This pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbee18e4f6955da4f0107ccdb9563e02
https://doi.org/10.1016/j.jpcs.2007.08.055
https://doi.org/10.1016/j.jpcs.2007.08.055
Autor:
Kwanghoon Kim, Rolf E. Hummel
Publikováno v:
Journal of Luminescence. 127:339-348
The infrared (IR) electroluminescence (EL) of erbium-doped spark-processed silicon (sp-Si) was investigated. For this, a device was constructed which consisted of a silicon wafer on which an erbium layer was vapor deposited, followed by spark-process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a7f0efb73e56b72ea53ec196c3df790
https://doi.org/10.1016/j.jlumin.2006.12.009
https://doi.org/10.1016/j.jlumin.2006.12.009
Publikováno v:
Journal of Physics and Chemistry of Solids. 67:1543-1549
Spark-processed Si (sp-Si) exhibits blue, green and red photoluminescence at around 385, 525 and 650 nm, depending on the wavelength of excitation. Its optical absorption spectrum reveals bands peaked approximately at 245, 277, 325 and 389 nm. The ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::332c1374f3b09e14d3ccd48aa7fbba28
https://doi.org/10.1016/j.jpcs.2006.01.121
https://doi.org/10.1016/j.jpcs.2006.01.121
Autor:
Yasin Ekinci, Uğur Serincan, Anette Eleonora Gunnæs, Rasit Turan, Rolf E. Hummel, Giray Kartopu, Terje G. Finstad, V. A. Karavanskii
Publikováno v:
physica status solidi (a). 202:1472-1476
Photoluminescence (PL) properties of various Ge-based nanostructured materials, prepared using methods such as chemical etching, ion implantation and spark processing, have been studied. The PL was much stronger from the samples containing Ge nanocry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27bd812e8185cff7866e851373a35123
https://doi.org/10.1002/pssa.200461140
https://doi.org/10.1002/pssa.200461140
Publikováno v:
Journal of Applied Physics. 95:3466-3472
Microstructure and origin of the orange photoluminescence (PL) band of visible luminescing spark-processed germanium (sp-Ge) has been studied using simultaneous micro-Raman and -PL spectroscopy and scanning electron microscope. Instability of the sp-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c94fb9a87b2724a4160b2239a6e726c
https://doi.org/10.1063/1.1650919
https://doi.org/10.1063/1.1650919
Publikováno v:
Materials Science and Engineering: B. 107:124-133
Spark-processed Si (sp-Si) is a porous solid-state material. Due to the nature of its structure and morphology, the traditional methods for porosity measurements cannot be utilized. Using the measure theory and the expected value theorems of stereolo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2ac6b641dbf999df3f4a7d087ed60a9
https://doi.org/10.1016/j.mseb.2003.10.112
https://doi.org/10.1016/j.mseb.2003.10.112
Autor:
Rolf E. Hummel
It is achallenging endeavor to trace the properties and the de velopment of materials in the light of the history of civilization. Materials such as metals, alloys, ceramics, glass, fibers, and so on have been used by mankind for millennia. Actuall
Autor:
Rolf E. Hummel
It is quite satisfying for an author to learn that his brainchild has been favorably accepted by students as well as by professors and thus seems to serve some useful purpose. This horizontally integrated text on the electronic properties of metals,
Autor:
Rolf E. Hummel
It is quite satisfying for an author to learn that his brainchild has been favorably accepted by students as well as by professors and thus seems to serve some useful purpose. This horizontally integrated text on the electronic properties of metals,