RAMAN SCATTERING ON PHONONS IN Nb-Cu METALLIC SUPERLATTICE

We present Raman scattering results on transverse acoustic phonons in metallic superlattice and have verified most expectations regarding acoustic phonon folding as in semiconductor superlattices. Raman folded peaks up to seventh order can be observed which agree closely with elastic continuum prediction in frequency. Owing to metal high optical absorption, phonon momentum nonconserving have caused increasing linewidth and disorder-activated transverse-acoustic mode scattering.

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Disorder-induced Raman scattering of In1−xGaxP in the transverse acoustic phonon region

Solid State Communications ◽

10.1016/0038-1098(81)91195-9 ◽

1981 ◽

Vol 37 (12) ◽

pp. 963-966 ◽

Cited By ~ 18

Author(s):

B.H. Bayramov ◽

V.V. Toporov ◽

Sh.B. Ubaydullaev ◽

L. Hildisch ◽

E. Jahne

Keyword(s):

Raman Scattering ◽

Acoustic Phonon ◽

Transverse Acoustic

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Plasmon-Mediated Oxidation Reaction on Au/p-Cu2O: The Origin of Hot Holes

Physchem ◽

10.3390/physchem1020011 ◽

2021 ◽

Vol 1 (2) ◽

pp. 163-175

Author(s):

Philipp Hawe ◽

Vitor R. R. Silveira ◽

Robert Bericat Vadell ◽

Erik Lewin ◽

Jacinto Sá

Keyword(s):

Optical Absorption ◽

Small Molecules ◽

Photocatalytic Efficiency ◽

Sustainable Solutions ◽

Hot Carrier ◽

Mitigate Climate Change ◽

Underlying Processes ◽

Direct Use ◽

Mediated Oxidation ◽

High Optical Absorption

More sustainable solutions are needed to produce chemicals and fuels, mainly to face rising demands and mitigate climate change. Light, as a reagent, has emerged as a route to activate small molecules, e.g., H2O, CO2, N2, and make complex chemicals in a process called photocatalysis. Several photosystems have been proposed, with plasmonic technology emerging as one the most promising technologies due to its high optical absorption and hot-carrier formation. However, the lifetime of hot carriers is unsuitable for direct use; therefore, they are normally coupled with suitable charge-accepting materials, such as semiconductors. Herein, a system is reported consisting of Au supported in p-Cu2O. The combination of p-Cu2O intrinsic photoactivity with the plasmonic properties of Au extended the system’s optical absorption range, increasing photocatalytic efficiency. More importantly, the system enabled us to study the underlying processes responsible for hot-hole transfer to p-Cu2O. Based on photocatalytic studies, it was concluded that most of the holes involved in aniline photo-oxidation come from hot-carrier injections, not from the PIRET process.

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Brillouin study of acoustic phonon softening and optical absorption coefficients of ultraheavily doped n-Si

Solid State Communications ◽

10.1016/0038-1098(84)90573-8 ◽

1984 ◽

Vol 49 (4) ◽

pp. 299-301 ◽

Cited By ~ 8

Author(s):

A.K. Sood ◽

M. Cardona

Keyword(s):

Optical Absorption ◽

Acoustic Phonon ◽

Absorption Coefficients ◽

Phonon Softening

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Resonance Raman scattering and optical absorption of adrenodoxin and selena-adrenodoxin

Biochemical and Biophysical Research Communications ◽

10.1016/0006-291x(73)90173-3 ◽

1973 ◽

Vol 53 (3) ◽

pp. 869-874 ◽

Cited By ~ 36

Author(s):

Shiang-Pin W. Tang ◽

Thomas G. Spiro ◽

Kazuo Mukai ◽

Tokuji Kimura

Keyword(s):

Optical Absorption ◽

Raman Scattering ◽

Resonance Raman ◽

Resonance Raman Scattering

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Optical properties of orthorhombic germanium selenide: an anisotropic layered semiconductor promising for optoelectronic applications

Journal of Materials Chemistry C ◽

10.1039/d1tc04280g ◽

2021 ◽

Author(s):

Agata Karolina Tołłoczko ◽

Szymon J. Zelewski ◽

Michał Błaszczak ◽

Tomasz Woźniak ◽

Anna Siudzińska ◽

...

Keyword(s):

Optical Properties ◽

Optical Absorption ◽

Van Der Waals ◽

Group Iv ◽

Black Phosphorus ◽

Layered Semiconductor ◽

Germanium Selenide ◽

Optoelectronic Applications ◽

High Optical Absorption

Group-IV monochalcogenides, such as germanium selenide (GeSe) are strongly anisotropic semiconducting van der Waals crystals isoelectronic to black phosphorus, with superior stability in air conditions. High optical absorption, good conductivity,...

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