scholarly journals Plasmon-enhanced reduced graphene oxide photodetector with monometallic of Au and Ag nanoparticles at VIS–NIR region

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nurul Syazwani Rohizat ◽  
Atiena Husna Abdullah Ripain ◽  
Chin Seong Lim ◽  
Chee Leong Tan ◽  
Rozalina Zakaria
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Ag Nanoparticles ◽  
High Performance ◽  
Electron Beam Evaporation ◽  
Localized Surface Plasmon ◽  
Strong Light ◽  
Reduced Graphene ◽  
New Strategy ◽  
Specific Detectivity

AbstractHybrids plasmonic nanoparticles (NPs) and unique 2D graphene significantly enhanced the photoresponse of the photodetectors. The metallic NPs that exhibit localized surface plasmon resonance (LSPR) improves strong light absorption, scattering and localized electromagnetic field by the incident photons depending on the optimum condition of NPs. We report high-performance photodetectors based on reduced graphene oxide (rGO) integrated with monometallic of Au and Ag nanoparticles via a familiar fabrication technique using an electron beam evaporation machine. Under 680 nm illumination of light, our rGO photodetector exhibited the highest performance for Au-rGO with the highest responsivity of 67.46 AW−1 and the highest specific detectivity (2.39 × 1013 Jones). Meanwhile, Ag-rGO achieved the highest responsivity of 17.23 AW−1, specific detectivity (7.17 × 1011 Jones) at 785 nm. The response time are 0.146 µs and 0.135 µs for Au-rGO and Ag-rGO respectively for both wavelengths. The proposed photodetector with combining monometallic and graphene provide a new strategy to construct reliable and next-generation optoelectronic devices at VIS–NIR region.

A new strategy for the construction of 3D TiO2 nanowires/reduced graphene oxide for high-performance lithium/sodium batteries

2018 ◽  
Vol 6 (47) ◽  
pp. 24256-24266 ◽  
Author(s):  
Jiage Yu ◽  
Hui Huang ◽  
Yongping Gan ◽  
Yang Xia ◽  
Chu Liang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Promising Method ◽  
Tio2 Nanowires ◽  
Storage Performance ◽  
Reduced Graphene ◽  
Sodium Batteries ◽  
New Strategy

Building a rational nanoarchitecture of TiO2 nanowires/RGO composite is a promising method to satisfy the demands of excellent Li+/Na+ storage performance.

A new strategy to prepare Ge/GeO2-reduced graphene oxide microcubes for high-performance lithium-ion batteries

2019 ◽  
Vol 318 ◽  
pp. 314-321 ◽  
Author(s):  
Fei Liu ◽  
Yaping Wang ◽  
Junrong Shi ◽  
Jiande Lin ◽  
Weijie Zhou ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
Reduced Graphene ◽  
New Strategy

scholarly journals Effect of Ag/rGO on the Optical Properties of Plasmon-Modified SnO2 Composite and Its Application in Self-Powered UV Photodetector

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 648 ◽  
Author(s):  
James Taban Abdalla ◽  
Jinzhong Wang ◽  
Dongbo Wang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Photocurrent Density ◽  
Fast Response ◽  
Localized Surface Plasmon ◽  
X Ray Diffraction ◽  
Enhanced Absorption ◽  
Reduced Graphene ◽  
Self Powered

A facile hydrothermal method was employed to synthesize silver–reduced graphene oxide (Ag/rGO) plasmon-modified SnO2 composite, by incorporating Ag–reduced graphene oxide (Ag/rGO) into SnO2 nanorods as a photoanode for assembling a self-powered ultraviolet photodetector (UVPD). The as-synthesized samples were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and UV visible spectrophotometer. The as-prepared Ag/rGO films show enhanced light absorption attributed to the localized surface plasmon resonance (LSPR). The optimized 1.0 wt.% Ag/rGO incorporated into SnO2-based UVPD exhibits a significant photocurrent response due to the enhanced absorption light and effective suppression of charge recombination. This UVPD demonstrates a high performance, with photocurrent density reaching 0.29 mAcm−2 compared to the SnO2-based device with 0.16 mAcm−2. This device also exhibits a high on:off ratio of 195 and fast response time, which are superior to that of the free-modified one. In addition, the UVPD based on plasmon-modified SnO2 photoanode treated with TiCl4-aqueous solution has attained a higher photocurrent with a maximum value reaching 5.4 mAcm−2, making this device favorable in ultraviolet detection.

Variable densification of reduced graphene oxide foam into multifunctional high-performance graphene paper

2018 ◽  
Vol 6 (45) ◽  
pp. 12321-12328 ◽  
Author(s):  
Fan Xu ◽  
Ruofan Chen ◽  
Zaishan Lin ◽  
Xianxian Sun ◽  
Shasha Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Reduced Graphene ◽  
New Strategy ◽  
Graphene Paper

Our new strategy is very promising in terms of controlling the thickness, density, and size of graphene paper.

Synthesis and Characterization of Reduced Graphene Oxide

2013 ◽  
Vol 678 ◽  
pp. 56-60 ◽  
Author(s):  
Cherukutty Ramakrishnan Minitha ◽  
Ramasamy Thangavelu Rajendrakumar
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
High Performance ◽  
Structural Changes ◽  
Epoxy Group ◽  
Xrd Analysis ◽  
Si Substrates ◽  
Reduced Graphene ◽  
Reduced Graphite Oxide

Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene oxide was prepared by oxidizing graphite to form graphite oxide. From XRD analysis the peak around 11.5o confirmed that the oxygen was intercalated into graphite. By using hydrazine hydrate, the epoxy group in graphite oxide was reduced then the solution of reduced graphite oxide (rGO) is exfoliated. Raman spectrum of rGO contains both G band (1580 cm-1), D band (1350 cm-1). The remarkable structural changes reveals that reduction of graphene oxide from the values of ID/IG ratio that increase from 0.727 (GO) to 1.414 (rGO). The exfoliated reduced graphite oxide solution is spin coated on to the SiO2/Si substrates.

Green and facile preparation of graphene/resveratrol/polyaniline composites for high-performance supercapacitors

2021 ◽  
Vol 45 (7) ◽  
pp. 3581-3588
Author(s):  
Zhaokun Wang ◽  
Licong Jiang ◽  
Hongwei Pan ◽  
Yongyin Cui ◽  
Chengzhong Zong
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Environmentally Friendly ◽  
Reduced Graphene ◽  
Facile Preparation ◽  
Polyaniline Composites

A novel and environmentally-friendly resveratrol (RA) was used as an effective reagent for the preparation of reduced graphene oxide (rGO).

Hierarchical nanostructures of MgCo2O4 on reduced graphene oxide as a high-performance catalyst for methanol electro-oxidation

2021 ◽  
Author(s):  
Mohammad Bagher Askari ◽  
Parisa Salarizadeh ◽  
Antonio Di Bartolomeo ◽  
Mohammad Hassan Ramezan zadeh ◽  
Hadi Beitollahi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Hierarchical Nanostructures ◽  
Reduced Graphene ◽  
Electro Oxidation
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