Interstitial charge transfer pathways in a TiO2/CdIn2S4 heterojunction photocatalyst for direct conversion of sunlight into fuel

2018 ◽  
Vol 6 (33) ◽  
pp. 16064-16073 ◽  
Author(s):  
Manjiri A. Mahadadalkar ◽  
Suresh W. Gosavi ◽  
Bharat B. Kale
Keyword(s):  
Charge Transfer ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Energy Levels ◽  
Direct Conversion ◽  
Synergistic Interaction ◽  
Electronic Band ◽  
Valence Bands

The synergistic interaction between CdIn2S4 and TiO2 matrices leads to alteration in the electronic band structure of TiO2 and creates the energy levels between the conduction and valence bands for interstitial charge transfer.

Surface projected electronic band structure and adsorbate charge transfer dynamics: Ar adsorbed on Cu(111) and Cu(100)

2006 ◽  
Vol 427 (1-3) ◽  
pp. 91-95 ◽  
Author(s):  
S. Vijayalakshmi ◽  
A. Föhlisch ◽  
F. Hennies ◽  
A. Pietzsch ◽  
M. Nagasono ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Electronic Band ◽  
Charge Transfer Dynamics

High Resolution Optical Spectroscopy of Free Exciton and Electronic Band Structure near the Fundamental Gap in 4H SiC

2018 ◽  
Vol 924 ◽  
pp. 239-244 ◽  
Author(s):  
Walter M. Klahold ◽  
Wolfgang J. Choyke ◽  
Robert P. Devaty
Keyword(s):  
Absorption Spectrum ◽  
Band Structure ◽  
Density Functional ◽  
Electronic Band Structure ◽  
Free Exciton ◽  
Electron Mass ◽  
Electronic Band ◽  
Wavelength Resolution ◽  
Primary Origin ◽  
Valence Bands

We use thick, relatively high purity 4H SiC boule material to measure the wavelength modulated absorption spectrum with improved wavelength resolution and sensitivity with respect to previous work. We observe several small 0.6 ± 0.1 meV splittings, which we attribute to electron mass anisotropy and electron-hole exchange interaction. In addition, we identify several features in the absorption spectrum as signatures of nonparabolicity in the free exciton dispersion relations, the primary origin of which is likely the nonparabolic energy dispersion of the valence bands, as revealed by published band structure calculations based on density functional theory.

A consolidated account of electrochemical determination of band structure parameters in II–VI semiconductor quantum dots: a tutorial review

2019 ◽  
Vol 21 (9) ◽  
pp. 4695-4716 ◽  
Author(s):  
Pravin Popinand Ingole
Keyword(s):  
Quantum Dots ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Energy Levels ◽  
Electrochemical Determination ◽  
Electronic Energy ◽  
Semiconductor Quantum Dots ◽  
Electronic Band ◽  
Nano Structure ◽  
Electronic Energy Levels

Probing absolute electronic energy levels in semiconductor quantum dots (Q-dots) is crucial for engineering their electronic band structure and hence for precise design of composite nano-structure based devices.

scholarly journals Angle-Resolved Photoemission Study on the Band Structure of Organic Single Crystals

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 773
Author(s):  
Ke Wang ◽  
Ben Ecker ◽  
Yongli Gao
Keyword(s):  
Band Structure ◽  
Single Crystals ◽  
Organic Semiconductors ◽  
Electronic Band Structure ◽  
Inorganic Materials ◽  
Strong Electron ◽  
Electronic Band ◽  
Valence Bands ◽  
Energy And Momentum ◽  
Photoemission Study

Angle-resolved photoemission spectroscopy (ARPES) is a vital technique, collecting data from both the energy and momentum of photoemitted electrons, and is indispensable for investigating the electronic band structure of solids. This article provides a review on ARPES studies of the electronic band structure of organic single crystals, including organic charge transfer conductors; organic semiconductors; and organo-metallic perovskites. In organic conductors and semiconductors, band dispersions are observed that are highly anisotropic. The Van der Waals crystal nature, the weak electron wavefunction overlap, as well as the strong electron-phonon coupling result in many organic crystals having indiscernible dispersion. In comparison, organo-metallic perovskite halides are characterized by strong s-p orbitals from the metal and halide at the top of the valence bands, with dispersions similar to those in inorganic materials.

scholarly journals Photoelectron Spectroscopy of Solids ? VUV Band Structure Studies

1990 ◽  
Vol 43 (5) ◽  
pp. 651 ◽  
Author(s):  
Robert Leckey ◽  
John Riley
Keyword(s):  
Band Structure ◽  
Photoelectron Spectroscopy ◽  
Electronic Band Structure ◽  
Surface States ◽  
Initial State ◽  
Emission Data ◽  
Electronic Band ◽  
Radiation Sources ◽  
Valence Bands ◽  
Variable Energy

The electronic band structure of solids, including states specific to the surface, may now be explored in very great detail by photoelectron spectroscopy. Variable energy photon sources (synchroton radiation sources) coupled with advanced angle resolving electron spectrometers permit access to emission from specific points within the complete Brillouin zone. The technique of band mapping has now reached a stage where the small k-dependent changes to individual valence bands due to the effects of introduced lattice strain can be observed, for example. The relative importance of emission from surface states, as opposed to bulk band states, can be demonstated dramatically using off-normal emission data. Angle resolved constant initial state spectroscopy has recently been shown to provide details of excited state bandstructure and has clarified the involvement of surface and bulk Umklapp scattering in the photoemission process. The above capabilities of photoelectron spectroscopy are discussed, using metallic and semiconducting examples, and are related to interface problems in general.

scholarly journals Charge transfer-induced enhancement of a Raman signal in a hybrid Ag–GaN nanostructure

RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28554-28560 ◽  
Author(s):  
Kishor Upadhyaya ◽  
Sharvani S ◽  
Narasimha Ayachit ◽  
S. M. Shivaprasad
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Band Structure ◽  
Ag Nanoparticles ◽  
Electronic Band Structure ◽  
Surface Conductivity ◽  
Raman Signal ◽  
Electronic Band ◽  
High Metal ◽  
Nanowall Network

The optical properties and electronic band structure of Ag nanoparticles dispersed on a GaN nanowall network were studied. High metal like surface conductivity was revealed, and charge transfer between Ag and GaN was involved in the enhancement of Raman signals.

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