Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Derrick T. Speaks"'
Autor:
Derrick T. Speaks
Publikováno v:
International Journal of Mechanical and Materials Engineering. 15
Presented are experimental results on the effect of concentration, aging, and annealing time on the optical and structural properties of sol gel zinc oxide (ZnO) and Al-doped ZnO thin films. ZnO and ZnO:Al thin films were fabricated on glass substrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435068b91eda33c73aa3a8ccb71e6d95
https://doi.org/10.1186/s40712-019-0113-6
https://doi.org/10.1186/s40712-019-0113-6
Publikováno v:
Materials Chemistry and Physics. 135:1036-1043
The electronic structure of cadmium dichloride has been studied by X-ray absorption near edge structure (XANES) and, for the first time, by resonant inelastic X-ray scattering (RIXS) at the Cl K edge. Good agreement was obtained between the non-reson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb105a47c25baf139b6e77adf13d1eec
https://doi.org/10.1016/j.matchemphys.2012.06.010
https://doi.org/10.1016/j.matchemphys.2012.06.010
Autor:
Jeffrey W. Beeman, Eugene E. Haller, Lothar A. Reichertz, Derrick T. Speaks, Kin Man Yu, Jonathan D. Denlinger, Marie A. Mayer, Wladek Walukiewicz
Publikováno v:
The Journal of Physical Chemistry C. 116:15281-15289
No single material or materials system today is a clear choice for photoelectrochemical electrode applications. Generally, materials with narrow, well-aligned band gaps are unstable in solution and stable materials have band gaps that are too wide to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::675dc65cf0b5490dae0c8cbf31c566ea
https://doi.org/10.1021/jp304481c
https://doi.org/10.1021/jp304481c
Autor:
Wladek Walukiewicz, Maryna Chernyshova, Jonathan D. Denlinger, G. Derkachov, Krystyna Lawniczak-Jablonska, Tolek Tyliszczak, Derrick T. Speaks, Oliver Hemmers, Kin Man Yu, I. N. Demchenko
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 184:249-253
We present X-ray absorption spectroscopy (XAS) and resonance inelastic X-ray scattering (RIXS) measurements of CdO thin film. The observed differences between bulk and surface XAS signals suggest the presence of a surface electron accumulation layer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63ead118cb284e2f80e7e0b2f99cb413
https://doi.org/10.1016/j.elspec.2010.09.011
https://doi.org/10.1016/j.elspec.2010.09.011
Autor:
Joshua D. Kuntz, Thomas M. Tillotson, Stephen E. Derenzo, Stephen A. Payne, Bruce H. T. Chai, Derrick T. Speaks, Yetta D. Porter-Chapman, Nerine J. Cherepy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 579:38-41
For rapid, unambiguous isotope identification, scintillator detectors providing high-resolution gamma ray spectra are required. We have fabricated Lutetium Aluminum Garnet (LuAG) using transparent ceramic processing, and report a 2-mm thick ceramic e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef5b223638b882138da47540d8ee3466
https://doi.org/10.1016/j.nima.2007.04.009
https://doi.org/10.1016/j.nima.2007.04.009
Autor:
Hongcai He, Derrick T. Speaks, Kin Man Yu, Samuel S. Mao, Wladek Walukiewicz, Ruying Zhao, Leonardo Hsu, Marie A. Mayer, E. E. Haller
Publikováno v:
2012 38th IEEE Photovoltaic Specialists Conference.
Low transparency of conventional transparent conducting oxides (TCOs) in the IR region (λ∼1000 nm) due to absorption and reflection by the high concentration of free carrier restricts the applications of materials to photovoltaics that do not use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0fdd152164a39000720469606f908ac
https://doi.org/10.1109/pvsc.2012.6317996
https://doi.org/10.1109/pvsc.2012.6317996
Autor:
Wladek Walukiewicz, Kin Man Yu, Samuel S. Mao, Marie A. Mayer, Eugene E. Haller, Derrick T. Speaks
Publikováno v:
SPIE Proceedings.
ZnO 1-x Se x films have been prepared through pulsed laser deposition a s a step toward stable films with a band gap appropriate for water splitting. The films show a clear red shift in absorption with increasing Se content and a s hift in the flat b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f5952ac8e653cab04a2b628d5838e9a
https://doi.org/10.1117/12.859482
https://doi.org/10.1117/12.859482
Autor:
I. N. Demchenko, Wladek Walukiewicz, Paul Olalde-Velasco, Oliver Hemmers, Kin Man Yu, J. D. Denlinger, Derrick T. Speaks, A. Derkachova, Krystyna Lawniczak-Jablonska, Maryna Chernyshova
Publikováno v:
Physical Review B. 82
X-ray absorption near edge structure (XANES) at the cadmium L3 and oxygen K edges for CdO thin films grown by pulsed laser deposition method, is interpreted within the real-space multiple scattering formalism, FEFF code. The features in the experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1c5e47158ca08ca8e1a05642848d6c8
https://doi.org/10.1103/physrevb.82.075107
https://doi.org/10.1103/physrevb.82.075107
Autor:
Leon Hsu, Eugene E. Haller, Hongcai He, Wladek Walukiewicz, Kin Man Yu, Derrick T. Speaks, Ruying Zhao, Samuel S. Mao, Marie A. Mayer
Publikováno v:
Journal of Applied Physics. 111:123505
In current technologies, state-of-the-art transparent conducting oxides exhibit good conductivity (∼5 × 103 S/cm) and transparency up to only λ ∼ 1000 nm, restricting the use of such thin films to photovoltaics that are not utilizing the infrar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25bc2a819f0fd9fb2afd51ab1116eef4
https://doi.org/10.1063/1.4729563
https://doi.org/10.1063/1.4729563
Autor:
Marie A. Mayer, Derrick T. Speaks, Wladek Walukiewicz, Eugene E. Haller, Samuel S. Mao, Kin Man Yu
Publikováno v:
Applied Physics Letters. 97:022104
ZnO1−xSex alloys with Se substitutional composition x
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c726ab904b481f9c158d1e48818daa8
https://doi.org/10.1063/1.3464323
https://doi.org/10.1063/1.3464323