Investigation of electronic and optical properties of molybdenum disulfide modulated by surface functionalization

... background and literature review 1.1.1 Synthesis of 2D TMDCs 1.1.2 Electronic, optical and vibrational properties of TMDCs Electronic structure Optical properties ... preparation and device fabrication 69 4.3 Modulating MoS2 FET electronic transport properties by Cs2CO3 surface functionalization 71 4.4 Modulating optical properties of MoS2 by Cs2CO3 ......

Ngày tải lên: 09/09/2015, 11:16

... asymptotically the value of the band-gap of the undoped Si-nw This is another indication of how doping can modify the electronic and optical properties of the Si nanostructures Conclusions 3.2 3.4 ... systematic analysis of the effect of the B and P codoping in Si-nw, concentrating not only on the structural properties but also on how doping i...

Ngày tải lên: 16/03/2014, 15:15

... Techniques……………………………………………29 3.1.1 Surface plasmon spectroscopy ………………………………………….29 3.1.2 Electrochemical -surface plasmon spectroscopy …………………… 32 3.1.3 High pressure surface plasmon spectroscopy with electrochemical ... convenience and surface plasmon is used for short The aim of this study is to combine surface plasmon spectroscopy (SPS) with other techniques to i...

Ngày tải lên: 08/11/2015, 17:00

... ELECTRONIC, MAGNETIC AND OPTICAL PROPERTIES OF ATOMICALLY CONTROLLED COMPLEX OXIDE HETEROSTRUCTURES AND INTERFACES XIAO WANG (B.Sc, Shandong University, P.R China) ... spin and orbital degree of freedom in complex oxides, new properties can emerge at the interfaces of atomically flat oxide heterostructures, because of the inherent discontinuities a...

Ngày tải lên: 09/09/2015, 10:07

... layers and hence open an energy gap29,36 The origins of those outstanding properties of both single layer graphene and bilayer graphene can be explored from graphene s unique crystal and electronic ... leveraged by the outstanding properties of graphene and its chemical derivatives To realize its electronic applications, it is important to understand its band stru...

Ngày tải lên: 10/09/2015, 08:27

... not all defects in oxides are detrimental for applications Instead, they have their own specific roles in determining the electronic, magnetic and optical properties of oxides and oxide heterostructures ... bonds and prone to a variety of cationic and anionic point defects energetically favorable in such materials Point defects could significantly affect the ele...

Ngày tải lên: 10/09/2015, 09:11

... arc-lamp, excitation at 275 nm) of the three tungsten oxide nanorod samples of various lengths dissolved in dichloromethane Figure Photoluminescence spectra of tungsten oxide nanorods; 25 ( nm (short), ... micrographs of (a) ( 0.5 nm × 25 ( nm and (b) ( 1.5 nm × 130 ( 30 nm tungsten oxide nanorods Little is known about the photoluminescence of nanostructured tungst...

Ngày tải lên: 20/03/2014, 13:08

Ngày tải lên: 22/03/2014, 11:20

... and SAED pattern of the sea urchin-like ZnO nanostructures are presented in Fig Fig 2a and b displays the low magnification and high magnification SEM images of the sea urchin-like ZnO nanostructures, ... pattern (a) and UV–visible optical absorption characteristics (b) of the sea urchin-like ZnO nanostructures Fig SEM images (a,b), TEM image (c), HRTEM image (...

Ngày tải lên: 06/05/2014, 13:23

... Biosynthesis of Bimetallic Au-Ag Alloy Nanoparticles”, Small, Vol 1, pp 517-520, 2005 [25 P Raveendran, J Fu, and S L Wallen, “A simple and green method for the synthesis of Au, Ag, and Au–Ag alloy ... Figure Calculated optical absorption spectra for Au-Ag bimetallic colloidal solutions with different molar ratios of Au and Ag Conclusions Au-Ag nanoclusters of...

Ngày tải lên: 04/06/2014, 15:20

... investigated the structural and optical properties of type-II GaSb/InGaAs QDs grown on InP (100) substrate using molecular beam epitaxy [MBE] Experiments GaSb/InGaAs type-II QDs were grown on the (100) ... independent of the excitation power which is a typical feature of the type-I band transition Therefore, the interband transition of the GaS...

Ngày tải lên: 20/06/2014, 20:20

... Hwang et al.: Structural and optical properties of ZnS thin films deposited by RF magnetron sputtering Nanoscale Research Letters 2012 7:26 Author details School of Materials Science and Engineering, ... temperatures on the structural properties of the films has been investigated, and the optical properties of the films have also been analyzed Met...

Ngày tải lên: 20/06/2014, 21:20

... J/cm2, and the shot area on the target surface was 0.042 cm2 Before the deposition, there should be pre-deposition process for The deposition process continued for 30 The structural and (a) (b) optical ... http://www.nanoscalereslett.com/content/6/1/552 (a) Au catalyst Page of (c) EDS (b) (103) ZnO NW nm Figure TEM images of 3SZO NW (a) The location and the size...

Ngày tải lên: 20/06/2014, 22:20

... investigate the effect of Zn2+ partially substituting for Co2+ in CoFe2O4 nanoparticles (Co1-xZnxFe2O4; x = 0, 0.5, and 1) and shelling with silica on the magnetic and optical properties of the ferrite ... the magnetic properties and diffuse reflectance of the prepared ferrite nanoparticles, respectively Results and discussion Figure 1a, b, c shows the X-ray diffract...

Ngày tải lên: 21/06/2014, 01:20