Dual-defects induced band edge reconstruction of tin dioxide via cobalt and nitrogen Co-Doping for wearable supercapacitor application

2021 ◽  
Vol 493 ◽  
pp. 229685
Author(s):  
Jing Xu ◽  
Yibing Xie
Keyword(s):  
Tin Dioxide ◽  
Band Edge ◽  
Supercapacitor Application ◽  
Co Doping ◽  
Edge Reconstruction

Optical Transmission Measurements on MOCVD Grown GaMnN Films on Sapphire

2006 ◽  
Vol 955 ◽  
Author(s):  
Fevzi Erdem Arkun ◽  
Nadia A El-Masry ◽  
John Muth ◽  
Xiyao Zhang ◽  
Amr Mahrouse ◽  
...  
Keyword(s):  
Absorption Band ◽  
Energy Band ◽  
Optical Transmission ◽  
Chemical Vapor ◽  
Band Edge ◽  
Conduction Band Edge ◽  
Broad Absorption Band ◽  
Co Doping ◽  
Transmission Measurements ◽  
Mn Concentration

ABSTRACTWe demonstrate optical transmission measurements performed on 1.2 μm thick GaMnN films grown by metalorganic chemical vapor deposition on (0001) sapphire substrates. According to the data acquired from these measurements, Mn forms a deep acceptor band at 1.4 eV above the valance band of GaMnN. Full width at half maximum of this absorption band increases from 107 meV to 198meV as the Mn concentration increases from 0.3% to 1.6 %; which indicates that this band becomes wider as the concentration of Mn increases in the lattice. A broad absorption band starting at 1.9eV and extending to the band edge of GaMnN was also determined. This was attributed to the transition from the Mn energy band to the conduction band edge of GaMnN. Absorption at both of these bands scales with the Mn concentration and thickness of the films. The effect of co-doping of GaMnN films with magnesium on the transmission spectra was also investigated. The absorption band initially observed at 1.4 eV was shifted to 1.6 eV as a result of introduction of Magnesium into the lattice of GaMnN. From these results we conclude that Mn is incorporated in the lattice and forms an energy band in the bandgap of GaMnN. The width of this energy band is also a function of the Mn concentration in GaMnN.

scholarly journals Defect-Induced Band-Edge Reconstruction of a Bismuth-Halide Double Perovskite for Visible-Light Absorption

2017 ◽  
Vol 139 (14) ◽  
pp. 5015-5018 ◽  
Author(s):  
Adam H. Slavney ◽  
Linn Leppert ◽  
Davide Bartesaghi ◽  
Aryeh Gold-Parker ◽  
Michael F. Toney ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Double Perovskite ◽  
Band Edge ◽  
Visible Light Absorption ◽  
Edge Reconstruction

Spay Pyrolyzed Nanostructured Tin Dioxide Thin Films Doped by Cobalt: Correlation between Structural and Gas Sensing Characteristics

2013 ◽  
Vol 377 ◽  
pp. 180-185
Author(s):  
Ghenadii Korotcenkov ◽  
Iulia Boris ◽  
Vladimir Brinzari ◽  
Beongki Cho
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Structural Properties ◽  
Gas Sensors ◽  
Tin Dioxide ◽  
Gas Sensing ◽  
Co Doping ◽  
Low Levels ◽  
Sensing Characteristics ◽  
Operation Characteristics

Effect of Co-doping on gas sensing, electrophysical and structural properties of the SnO2films deposited by spray pyrolysis has been studied. It is found that the influence of Co-doping on parameters of the SnO2-based gas sensors depends on the concentration of doping additives and could be accompanied by either improvement of sensor parameters at low levels of doping (CCo< 2-4 %) or degradation of the gas sensor operation characteristics while the concentration of additives exceeds 2-4%. An explanation of observed effects is given.

Surface Modification of Tin Dioxide via (Bi, S) Co‐Doping for Photoelectrocatalytic Reduction of CO 2 to Formate

2019 ◽  
Vol 6 (14) ◽  
pp. 3782-3790
Author(s):  
Yupeng Li ◽  
Huimin Yang ◽  
Xueyan Hu ◽  
Haoyang Tian ◽  
Mengting Gao ◽  
...  
Keyword(s):  
Surface Modification ◽  
Tin Dioxide ◽  
Co Doping

Triiodide-Induced Band-Edge Reconstruction of a Lead-Free Perovskite-Derivative Hybrid for Strong Light Absorption

2018 ◽  
Vol 30 (12) ◽  
pp. 4081-4088 ◽  
Author(s):  
Weichuan Zhang ◽  
Xitao Liu ◽  
Lina Li ◽  
Zhihua Sun ◽  
Shiguo Han ◽  
...  
Keyword(s):  
Light Absorption ◽  
Lead Free ◽  
Band Edge ◽  
Strong Light ◽  
Edge Reconstruction

scholarly journals Microwave Assisted Chemical Modification of Graphite Oxide for Supercapacitor Application

2021 ◽  
Vol 33 (11) ◽  
pp. 2621-2625
Author(s):  
R. Siddharthan ◽  
P. Mahalingam ◽  
E. Kanagaraj ◽  
K. Saravanan
Keyword(s):  
Graphite Oxide ◽  
Electrochemical Impedance ◽  
Microwave Treatment ◽  
Single Step ◽  
Supercapacitor Application ◽  
Suitable Material ◽  
Co Doping ◽  
Elemental Doping ◽  
Spectroscopy Studies ◽  
Boron Nitrogen

In present work, graphite oxide was chemically modified with boron, nitrogen and sulfur co-doping in a simple, single step green method by microwave treatment. Borax, urea and thiourea were used as precursors for doping. Mixtures of graphite oxide with precursors were microwave treated using domestic microwave oven at 800 W for 5 min. The products obtained were characterized for its morphology, structure, composition and electrical properties. The results showed that simultaneous reduction of graphite oxide and doping of boron, nitrogen and sulfur were occurred. The elemental doping distorts the structure without much affecting the crystalline nature. The boron, nitrogen and sulfur elements were doped in graphite oxide to the extent of 9.97 at%, 2.67 at% and 0.84 at%, respectively. The cyclic voltammetry and electrochemical impedance spectroscopy studies showed that boron, nitrogen and sulfur co-doped graphite oxide could be a suitable material for supercapacitor application.

Silver Co-Doping Effect on the Antimony Doped Tin Dioxide Electrode

2013 ◽  
Vol 734-737 ◽  
pp. 2382-2385
Author(s):  
Yun Hai Wang ◽  
Yong Rong Liang ◽  
Guo Li
Keyword(s):  
Electron Microscopy ◽  
Tin Dioxide ◽  
Dip Coating ◽  
X Ray Diffraction ◽  
Silver Doping ◽  
X Ray ◽  
Co Doping ◽  
Pyrolysis Method ◽  
Co Doped ◽  
Scanning Electron

In the present research, silver antimony co-doped tin dioxide electrodes were prepared via dip-coating pyrolysis method. The effect of silver doping on the composition, morphology, crystallization and electrochemical properties was investigated through various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) and cyclic voltammetry. The results showed that with proper silver doping, the electrode activity for wastewater treatment may be enhanced.

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