scholarly journals NMR study of Ba8Cu5SixGe41−x clathrate semiconductors

2015 ◽  
Vol 17 (26) ◽  
pp. 16991-16996 ◽  
Author(s):  
Ali A. Sirusi ◽  
Joseph H. Ross ◽  
Xinlin Yan ◽  
Silke Paschen
Keyword(s):  
Band Edge ◽  
Electronic Band ◽  
Nonlinear Variation ◽  
Nmr Study ◽  
Nmr Characterization

NMR characterization of thermoelectric Ba8Cu5SixGe41−x clathrates, includes results indicating large nonlinear variation of electronic band-edge properties vs. composition.

Optical Characterization of Electronic Structure of CuInS2 and CuAlS2 Chalcopyrite Crystals

2011 ◽  
Vol 170 ◽  
pp. 21-24
Author(s):  
Ching Hwa Ho ◽  
Sheng Feng Lo ◽  
Ping Chen Chi ◽  
Ching Cherng Wu ◽  
Ying Sheng Huang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Low Temperature ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Interband Transition ◽  
Optical Characterization ◽  
Band Edge ◽  
Interband Transitions ◽  
Electronic Band

Electronic structure of solar-energy related crystals of CuInS2 and CuAlS2 has been characterized using thermoreflectance (TR) measurement in the energy range between 1.25 and 6 eV. The TR measurements were carried out at room (~300 K, RT) and low (~30 K, LT) temperatures. A lot of interband transition features including band-edge excitons and higher-lying interband transitions were simultaneously detected in the low-temperature TR spectra of CuInS2 and CuAlS2. The energies of band-edge excitonic transitions at LT (RT) were analysed and determined to be =1.545 (1.535) and =1.554 eV (1.545 eV) for CuInS2, and =3.514 (3.486), =3.549 (3.522), and =3.666 eV (3.64 eV) for CuAlS2, respectively. The band-edge transitions of the and excitons are originated from the sulfur pp transitions in CuInS2 and CuAlS2 separated by crystal-field splitting. Several high-lying interband transitions were detected in the TR spectra of CuInS2 and CuAlS2 at LT and RT. Transition origins for the high-lying interband transitions are evaluated. The dependence of electronic band structure in between the CuInS2 and CuAlS2 is analysed and discussed.

scholarly journals Solid-State 17O NMR Study of α-D-Glucose: Exploring New Frontiers in Isotopic Labeling, Sensitivity Enhancement, and NMR Crystallography

2022 ◽  
Author(s):  
Jiahui Shen ◽  
Victor Terskikh ◽  
Jochem Struppe ◽  
Alia Hassan ◽  
Martine Monette ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectra ◽  
Isotopic Labeling ◽  
Sensitivity Enhancement ◽  
17O Nmr ◽  
Nmr Study ◽  
Nmr Characterization ◽  
Nmr Crystallography ◽  
Oxygen Atoms

We report synthesis and solid-state 17O NMR characterization of α-D-glucose for which all six oxygen atoms are site-specifically 17O-labeled. Solid-state 17O NMR spectra were recorded for α-D-glucose/NaCl/H2O (2/1/1) cocrystals under...

NMR characterization of complex natural products: Assigning novel, proton-deficient alkaloid scaffolds

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
KR Gustafson ◽  
STS Chan ◽  
D Milanowski
Keyword(s):  
Natural Products ◽  
Nmr Characterization

Synthesis and 31 P NMR characterization of new low toxic highly sensitive pH probes designed for in vivo acidic pH studies

2002 ◽  
Vol 10 (5) ◽  
pp. 1451-1458 ◽  
Author(s):  
Sophie Martel ◽  
Jean-Louis Clément ◽  
Agnès Muller ◽  
Marcel Culcasi ◽  
Sylvia Pietri
Keyword(s):  
Acidic Ph ◽  
Highly Sensitive ◽  
Nmr Characterization ◽  
Low Toxic ◽  
Ph Probes

Tailored Electronic Band Gap and Valance Band Edge of Nickel Oxide via p-Type Incorporation

2021 ◽  
Vol 125 (13) ◽  
pp. 7495-7501
Author(s):  
Gang Wang ◽  
Jinju Zheng ◽  
Boyi Xu ◽  
Chaonan Zhang ◽  
Yue Zhu ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Band Gap ◽  
Band Edge ◽  
Electronic Band ◽  
Electronic Band Gap ◽  
P Type
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