scholarly journals Probing the coupling between the components in a graphenemesoporous germanium nanocomposite using high-pressure Raman spectroscopy

2021 ◽  
Author(s):  
Denis Machon ◽  
Stéphanie Sauze ◽  
Richard Ares ◽  
Abderraouf Boucherif
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure ◽  
Determining Factor

The nature of the interface between the components of a nanocomposite is a major determining factor in the resulting properties. Using a graphene-mesoporous germanium nanocomposite with a core-shell structure as...

Conformal core-shell nanostructured photodetectors with enhanced photoresponsivity by high pressure sputter deposition

MRS Advances ◽  
2016 ◽  
Vol 1 (28) ◽  
pp. 2045-2050 ◽  
Author(s):  
Filiz Keles ◽  
Hilal Cansizoglu ◽  
Matthew Brozak ◽  
Emad Badraddin ◽  
Tansel Karabacak
Keyword(s):  
Thin Film ◽  
High Pressure ◽  
Shell Structure ◽  
Physical Vapor Deposition ◽  
Rf Sputtering ◽  
Low Pressure ◽  
Morphological Characterization ◽  
Sputter Deposition ◽  
Core Shell ◽  
Core Shell Structure

ABSTRACTWorking gas pressure during sputter deposition can significantly affect the conformality of a thin film when it is grown on a nanostructured surface. In this study, we fabricated core-shell nanostructured photodetectors, where n-type In2S3 nanorod arrays (core) were coated with p-type CuInS2 (CIS) films (shell) at relatively low and high Ar gas pressures. In2S3 nanorods were prepared by glancing angle deposition (GLAD) technique using a thermal evaporator unit. CIS films were deposited by RF sputtering at Ar pressures of 2.7x10-2 mbar (high pressure sputtering, HIPS) and 7.3x10-3 mbar (low pressure sputtering, LPS). The morphological characterization was carried out by means of SEM. The photocurrent measurement was conducted under 1.5 AM Sun under no bias. Nanostructured photodetectors of HIPS-CIS/GLAD-In2S3 (i.e. HIPS-GLAD) were shown to demonstrate enhanced photoresponse with a photocurrent value of 98 μA, which is about ∼230% higher than that of LPS-GLAD devices. The enhancement originates from the improved core-shell structure achieved by more conformal coating of the CIS shell. In addition, the results were compared to their counterpart thin-film devices incorporating an In2S3 film coated either with HIPS or LPS CIS layer. Nanorod devices with high and low pressure CIS films showed photocurrent values ∼20 times and ∼ 19 times higher compared to those of high and low pressure film devices, respectively. This finding can be explained by the higher light absorption property of nanorods, and the reduced inter-electrode distance as a result of core-shell structure, which allows the effective capture of the photo-generated carriers. Therefore, the results of this work can pave way to the development of high photoresponse core-shell semiconductor devices fabricated by physical vapor deposition techniques.

Surface Enhanced Raman Spectroscopy of a Au@Au Core–Shell Structure Containing a Spiky Shell

2016 ◽  
Vol 120 (37) ◽  
pp. 20814-20821 ◽  
Author(s):  
Debrina Jana ◽  
Zohre Gorunmez ◽  
Jie He ◽  
Ian Bruzas ◽  
Thomas Beck ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Shell Structure ◽  
Surface Enhanced Raman Spectroscopy ◽  
Core Shell ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Core Shell Structure

Electrical Conductivity of Ni-YSZ Anode for SOFCs According to the Ni Powder Size Variations in Core-shell Structure

2015 ◽  
Vol 53 (4) ◽  
pp. 287-293
Author(s):  
Byung-Hyun Choi ◽  
Young Jin Kang ◽  
Sung-Hun Jung ◽  
Yong-Tae An ◽  
Mi-Jung Ji
Keyword(s):  
Electrical Conductivity ◽  
Shell Structure ◽  
Core Shell ◽  
Powder Size ◽  
Ni Powder ◽  
Core Shell Structure

Preparation of Porous Core/Shell Structure Fe$lt;inf$gt;2$lt;/inf$gt;O$lt;inf$gt;3$lt;/inf$gt;/Al Nanothermite Membrane by Template Method

2015 ◽  
Vol 30 (6) ◽  
pp. 610 ◽  
Author(s):  
ZHENG Guo-Qiang ◽  
ZHANG Wen-Chao ◽  
XU Xing ◽  
SHEN Rui-Qi ◽  
DENG Ji-Ping ◽  
...  
Keyword(s):  
Shell Structure ◽  
Template Method ◽  
Core Shell ◽  
Porous Core ◽  
Core Shell Structure

Functional properties of BaTiO3–Ni0.5Zn0.5Fe2O4 magnetoelectric ceramics prepared from powders with core-shell structure

2010 ◽  
Vol 107 (10) ◽  
pp. 104106 ◽  
Author(s):  
L. P. Curecheriu ◽  
M. T. Buscaglia ◽  
V. Buscaglia ◽  
L. Mitoseriu ◽  
P. Postolache ◽  
...  
Keyword(s):  
Functional Properties ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure

scholarly journals Ternary ZnO/Co3O4/NiO inherited layered core-shell structure from a double template for high performanced supercapacitor

2021 ◽  
Author(s):  
Linli Zhu ◽  
Chen Hao ◽  
Saisai Zhou ◽  
Xiaohong Wang ◽  
Tiantian Zhou ◽  
...  
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure

Composite nanoparticles with titania–poly(N-vinylamide) core–shell structure

2021 ◽  
Vol 31 (1) ◽  
pp. 24-26
Author(s):  
Galina M. Kuz’micheva ◽  
Olesya I. Timaeva ◽  
Irina P. Chikhacheva ◽  
Roman V. Svetogorov ◽  
Ratibor G. Chumakov ◽  
...  
Keyword(s):  
Shell Structure ◽  
Composite Nanoparticles ◽  
Core Shell ◽  
Core Shell Structure
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