Operando Raman spectroscopic evidence of electron–phonon interactions in NiO/TiO2 pn junction photodetectors

2021 ◽  
Author(s):  
Wenjun Wang ◽  
Zhu Mao ◽  
Yanyu Ren ◽  
Fanxu Meng ◽  
Xiumin Shi ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Working Conditions ◽  
Spectroscopic Evidence ◽  
Raman Spectroscopic ◽  
Pn Junction ◽  
Pn Junctions

Operando Raman spectroscopy was used for noninvasive and nondestructive investigations of pn junctions in photodetectors under working conditions.

scholarly journals Monitoring electrode/electrolyte interfaces of Li-ion batteries under working conditions: A surface-enhanced Raman spectroscopic study on LiCoO2 composite cathodes

2021 ◽  
Author(s):  
Marcel Heber ◽  
Christian Hess
Keyword(s):  
Raman Spectroscopy ◽  
Working Conditions ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Raman Spectroscopic ◽  
Electrode Degradation ◽  
Composite Cathodes ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Li Ion

Lithium-ion batteries are commonly used for electrical energy storage in portable devices and are promising systems for large-scale energy storage. However, their application is still limited due to electrode degradation and stability issues. To enhance the fundamental understanding of electrode degradation we report on the Raman spectroscopic characterization of LiCoO2 cathode materials of working Li-ion batteries. To facilitate the spectroscopic analysis of the SEI (solid electrolyte interface) we apply surface-enhanced Raman spectroscopy by using Au nanoparticles coated with a thin SiO2 layer (Au@SiO2). We observe a surface-enhanced Raman signal of Li2CO3 at 1090 cm-1 during electrochemical cycling as an intermediate. Its formation/decomposition highlights the role of Li2CO3 as a component of the SEI on LiCoO2 composite cathodes. Our results demonstrate the potential of Raman spectroscopy to monitor electrode/electrolyte interfaces of lithium-ion batteries under working conditions thus allowing relations between electrochemical performance and structural changes to be established.

Matrix Infrared and Raman Spectroscopic Evidence for Pd(N2)3 in Solid Nitrogen

1972 ◽  
Vol 50 (14) ◽  
pp. 2385-2387 ◽  
Author(s):  
G. A. Ozin ◽  
M. Moskovits ◽  
P. Kùndig ◽  
H. Huber
Keyword(s):  
Raman Spectroscopy ◽  
Matrix Isolation ◽  
Absorption Intensity ◽  
Spectroscopic Evidence ◽  
Raman Spectroscopic ◽  
Solid Nitrogen ◽  
Infrared And Raman Spectroscopy ◽  
Intensity Calculations ◽  
Isotope Studies ◽  
Dinitrogen Complex

Cocondensation of palladium atoms with 14N2 at 4.2–10 °K leads to the formation of a binary dinitrogen complex. The complex is detected by matrix isolation infrared and Raman spectroscopy. Isotope studies using equimolar 14N2/15N2 mixtures, together with isotope frequency and integrated absorption intensity calculations, suggest that the species is tris-dinitrogen palladium(0), Pd(N2)3.

THE EFFECT OF OXYGEN ADSORPTION ON THE CONDUCTIVITY OF PBTE FILMS.

2020 ◽  
Vol 6 (8(77)) ◽  
pp. 21-23
Author(s):  
S.N. Sarmasov ◽  
R.Sh. Rahimov ◽  
T.Sh. Abdullayev
Keyword(s):  
Spectral Region ◽  
Current Flow ◽  
Oxygen Adsorption ◽  
Tunneling Mechanism ◽  
Pn Junction ◽  
Flow Through ◽  
Pn Junctions ◽  
Effect Of Oxygen

The effect of oxygen adsorption on the conductivity of PbTe films is studied. Pn junctions based on PbTe films are photosensitive in the IR spectral region with a maximum photosensitivity of 𝜆𝑚𝑎𝑥 microns. The tunneling mechanism of current flow through the pn junction is shown.

L-Alanyl-glycylglycine: FT-IR and Raman spectroscopic evidence for tripeptide packing in a collagenlike arrangement

Biopolymers ◽  
1984 ◽  
Vol 23 (4) ◽  
pp. 623-627 ◽  
Author(s):  
V. Renugopalakrishnan ◽  
P. H. B. Kloumann ◽  
Rajendra S. Bhatnagar
Keyword(s):  
Spectroscopic Evidence ◽  
Raman Spectroscopic ◽  
Ft Ir ◽  
Ir And Raman

Mapping gold nanoparticles on and in edible leaves in situ using surface enhanced Raman spectroscopy

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60152-60159 ◽  
Author(s):  
Zhiyun Zhang ◽  
Huiyuan Guo ◽  
Yingqing Deng ◽  
Baoshan Xing ◽  
Lili He
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Mapping Technique ◽  
Raman Spectroscopic ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Spinach Leaves

A surface enhanced Raman spectroscopic (SERS) mapping technique was applied to qualitatively detect and characterize gold nanoparticles on and in spinach leaves in situ.

Resonance Raman spectroscopic evidence for a common [3-iron-4-sulfur] structure among proteins containing three-iron centers

1983 ◽  
Vol 105 (22) ◽  
pp. 6671-6678 ◽  
Author(s):  
Michael K. Johnson ◽  
Roman S. Czernuszewicz ◽  
Thomas G. Spiro ◽  
James A. Fee ◽  
William V. Sweeney
Keyword(s):  
Resonance Raman ◽  
Spectroscopic Evidence ◽  
Raman Spectroscopic

A Furnace for Molten Salt Raman Spectroscopy to 800°C

1971 ◽  
Vol 25 (1) ◽  
pp. 82-84 ◽  
Author(s):  
Arvin S. Quist
Keyword(s):  
Raman Spectroscopy ◽  
Laser Beam ◽  
Molten Salts ◽  
Spectroscopic Studies ◽  
Sample Container ◽  
Raman Spectroscopic ◽  
Laser Raman ◽  
Different Types ◽  
Sample Chamber ◽  
Metal Block

A vacuum tight furnace has been constructed and used for laser-Raman spectroscopic studies of molten salts to 800°C. The sample container is positioned within the furnace by a removable metal block, several designs of which have been used with different types of sample containers. The sample under investigation is easily and rapidly aligned in the laser beam by means of micrometer screws located on the positioning table which supports the furnace. The compactness of the entire unit allows it to be readily moved into and out of the sample chamber of the spectrometer.

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