Photoemission study of the Si(111)-√3 × √3 -Pb mosaic phase: Observation of a large charge transfer

1992 ◽  
Vol 45 (11) ◽  
pp. 6321-6324 ◽  
Author(s):  
C. J. Karlsson ◽  
E. Landemark ◽  
Y.-C. Chao ◽  
R. I. G. Uhrberg
Keyword(s):  
Charge Transfer ◽  
Phase Observation ◽  
Photoemission Study ◽  
Large Charge

Photoemission study on the valence bands of DMe-DCNQI derived charge-transfer salts

1991 ◽  
Vol 1 (9) ◽  
pp. 1347-1354 ◽  
Author(s):  
D. Schmeißer ◽  
A. Gonzales ◽  
J. U. von Schütz ◽  
H. Wachtel ◽  
H. C. Wolf
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Salts ◽  
Valence Bands ◽  
Photoemission Study

scholarly journals Copper Sulfide Catalyzed Porous Fluorine-Doped Tin Oxide Counter Electrode for Quantum Dot-Sensitized Solar Cells with High Fill Factor

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Satoshi Koyasu ◽  
Daiki Atarashi ◽  
Etsuo Sakai ◽  
Masahiro Miyauchi
Keyword(s):  
Charge Transfer ◽  
Solar Cell ◽  
Quantum Dot ◽  
Tin Oxide ◽  
Counter Electrode ◽  
Fill Factor ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
Sensitized Solar Cells ◽  
Large Charge

The performance of quantum dot-sensitized solar cell (QDSSC) is mainly limited by chemical reactions at the interface of the counter electrode. Generally, the fill factor (FF) of QDSSCs is very low because of large charge transfer resistance at the interface between the counter electrode and electrolyte solution containing redox couples. In the present research, we demonstrate the improvement of the resistance by optimization of surface area and amount of catalyst of the counter electrode. A facile chemical synthesis was used to fabricate a composite counter electrode consisting of fluorine-doped tin oxide (FTO) powder and CuS nanoparticles. The introduction of a sputtered gold layer at the interface of the porous-FTO layer and underlying glass substrate also markedly reduced the resistance of the counter electrode. As a result, we could reduce the charge transfer resistance and the series resistance, which were 2.5 [Ω] and 6.0 [Ω], respectively. This solar cell device, which was fabricated with the presently designed porous-FTO counter electrode as the cathode and a PbS-modified electrode as the photoanode, exhibited a FF of 58%, which is the highest among PbS-based QDSSCs reported to date.

scholarly journals Charge transfer and in-cloud structure of large-charge-moment positive lightning strokes in a mesoscale convective system

2009 ◽  
Vol 36 (15) ◽  
pp. n/a-n/a ◽  
Author(s):  
Gaopeng Lu ◽  
Steven A. Cummer ◽  
Jingbo Li ◽  
Feng Han ◽  
Richard J. Blakeslee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Mesoscale Convective System ◽  
Convective System ◽  
Cloud Structure ◽  
Mesoscale Convective ◽  
Large Charge

scholarly journals Change of the work function of platinum electrodes induced by halide adsorption

2014 ◽  
Vol 5 ◽  
pp. 152-161 ◽  
Author(s):  
Florian Gossenberger ◽  
Tanglaw Roman ◽  
Katrin Forster-Tonigold ◽  
Axel Groß
Keyword(s):  
Charge Transfer ◽  
Work Function ◽  
Density Functional ◽  
Platinum Electrodes ◽  
Functional Theory ◽  
Dependent Behavior ◽  
Function Change ◽  
Adsorbate Layer ◽  
Electrochemical Electrode ◽  
Large Charge

The properties of a halogen-covered platinum(111) surface have been studied by using density functional theory (DFT), because halides are often present at electrochemical electrode/electrolyte interfaces. We focused in particular on the halogen-induced work function change as a function of the coverage of fluorine, chlorine, bromine and iodine. For electronegative adsorbates, an adsorption-induced increase of the work function is usually expected, yet we find a decrease of the work function for Cl, Br and I, which is most prominent at a coverage of approximately 0.25 ML. This coverage-dependent behavior can be explained by assuming a combination of charge transfer and polarization effects on the adsorbate layer. The results are contrasted to the adsorption of fluorine on calcium, a system in which a decrease in the work function is also observed despite a large charge transfer to the halogen adatom.

PHOTOEMISSION STUDY OF PURE AND Cs-INTERCALATED VSe2

1994 ◽  
Vol 08 (20) ◽  
pp. 1261-1268 ◽  
Author(s):  
H.I. STARNBERG ◽  
H.E. BRAUER ◽  
P.O. NILSSON ◽  
L.J. HOLLEBOOM ◽  
H.P. HUGHES
Keyword(s):  
Charge Transfer ◽  
Band Structure ◽  
Valence Band ◽  
Band Model ◽  
Valence Band Structure ◽  
Band Structure Calculations ◽  
Band Dispersion ◽  
Self Consistent ◽  
Photoemission Study ◽  
Structure Calculations

We report photoemission studies of the valence band structure of VSe 2 and of VSe2 intercalated with Cs. Pure VSe 2 showed significant band dispersion both perpendicular and parallel to the layers, i.e. the valence band of VSe 2 is 3D in character, confirming self-consistent LAPW band structure calculations. After Cs intercalation the perpendicular band dispersion vanished, while that parallel to the layers remained, showing that the valence band structure had become 2D. The observed changes go far beyond the rigid band model, but are largely understandable in terms of intercalation-induced decoupling of the VSe 2 layers, and charge transfer from the Cs.

Neutral-Type One-Dimensional Mixed-Valence Halogen-Bridged Platinum Chain Complexes with Large Charge-Transfer Band Gaps

2016 ◽  
Vol 55 (5) ◽  
pp. 2620-2626 ◽  
Author(s):  
Ken-ichi Otake ◽  
Kazuya Otsubo ◽  
Kunihisa Sugimoto ◽  
Akihiko Fujiwara ◽  
Hiroshi Kitagawa
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Band ◽  
Mixed Valence ◽  
Neutral Type ◽  
Band Gaps ◽  
One Dimensional ◽  
Chain Complexes ◽  
Large Charge ◽  
Platinum Chain
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