Oxygen effect on the interfacial electronic structure of C60 film studied by ultraviolet photoelectron spectroscopy

2007 ◽  
Vol 441 (1-3) ◽  
pp. 63-67 ◽  
Author(s):  
Yusuke Tanaka ◽  
Kaname Kanai ◽  
Yukio Ouchi ◽  
Kazuhiko Seki
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Oxygen Effect ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Interfacial Electronic Structure

scholarly journals A Study of Interfacial Electronic Structure at the CuPc/CsPbI2Br Interface

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 547
Author(s):  
Zengguang Tang ◽  
Liujiang Zhang ◽  
Zhenhuang Su ◽  
Zhen Wang ◽  
Li Chen ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Molecular Orbital ◽  
Photoelectron Spectroscopy ◽  
High Performance ◽  
Energy Gap ◽  
Hole Transport ◽  
Hole Injection ◽  
Band Bending ◽  
Valance Band Maximum ◽  
Interfacial Electronic Structure

In this article, CsPbI2Br perovskite thin films were spin-coated on FTO, on which CuPc was deposited by thermal evaporation. The electronic structure at the CsPbI2Br/CuPc interface was examined during the CuPc deposition by in situ X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) measurements. No downward band bending was resolved at the CsPbI2Br side, whereas there is ~0.23 eV upward band bending as well as a dipole of ~0.08 eV identified at the molecular side. Although the hole injection barrier as indicated by the energy gap from CsPbI2Br valance band maximum (VBM) to CuPc highest occupied molecular orbital (HOMO) was estimated to be ~0.26 eV, favoring hole extraction from CsPbI2Br to CuPc, the electron blocking barrier of ~0.04 eV as indicated by the offset between CsPbI2Br conduction band minimum (CBM) and CuPc lowest unoccupied molecular orbital (LUMO) is too small to efficiently block electron transfer. Therefore, the present experimental study implies that CuPc may not be a promising hole transport material for high-performance solar cells using CsPbI2Br as active layer.

Surface Band Structure Studies of Si Rich Reconstructions on 4H-SiC(1-100)

2005 ◽  
Vol 483-485 ◽  
pp. 547-550 ◽  
Author(s):  
Konstantin V. Emtsev ◽  
Thomas Seyller ◽  
Lothar Ley ◽  
A. Tadich ◽  
L. Broekman ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electron Diffraction ◽  
Photoelectron Spectroscopy ◽  
Low Energy ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Surface Band ◽  
X Ray ◽  
Low Energy Electron Diffraction ◽  
Different Temperatures ◽  
Low Energy Electron

We have investigated Si-rich reconstructions of 4H-SiC( 00 1 1 ) surfaces by means of low-energy electron diffraction (LEED), x-ray photoelectron spectroscopy (XPS), and angleresolved ultraviolet photoelectron spectroscopy (ARUPS). The reconstructions of 4H-SiC( 00 1 1 ) were prepared by annealing the sample at different temperatures in a flux of Si. Depending on the temperature different reconstructions were observed: c(2×2) at T=800°C, c(2×4) at T=840°C. Both reconstructions show strong similarities in the electronic structure.

Hybrid interfaces of conjugate polymers: Band edge alignment studied by ultraviolet photoelectron spectroscopy

2004 ◽  
Vol 19 (7) ◽  
pp. 1917-1923 ◽  
Author(s):  
W.R. Salaneck ◽  
M. Fahlman
Keyword(s):  
Electronic Structure ◽  
Polymer Films ◽  
Photoelectron Spectroscopy ◽  
Inert Atmosphere ◽  
Device Fabrication ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hybrid Interface

The control of hybrid interfaces in polymer-based electronic devices may be enabling in many applications. The engineering of hybrid interface involves (requires) an understanding of the electronic structure of materials—one organic and one inorganic—that form the two halves of hybrid interfaces, as well as the electronic and chemical consequences of the coupling of the two. Although much literature exists describing the interfaces between vapor-deposited organic molecules and model molecules for polymers on the surfaces of clean metals in ultrahigh vacuum, few studies have been reported on spin-coated, semiconducting polymer films on realistic substrates. Spin coating in an inert atmosphere (or even air) is a central part of the process of the fabrication of polymer-based light-emitting devices and other modern polymer-based electronic components. Here, work on the electronic structure of semiconducting (conjugated) polymer films spin-coated onto selected inorganic substrates, carried out using ultraviolet photoelectron spectroscopy, is reviewed and summarized to generate a generalized picture of the hybrid interfaces formed under realistic device fabrication conditions.

Electronic Structure of One-Dimensional Biradical Molecular Chain

2014 ◽  
Vol 1605 ◽  
Author(s):  
H. Koike ◽  
K. Ogawa ◽  
T. Kubo ◽  
K. Uchida ◽  
M. Chikamatsu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Photoelectron Spectroscopy ◽  
Organic Molecules ◽  
Molecular Chain ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Deposition Method ◽  
One Dimensional ◽  
The One

ABSTRACTWe investigated electronic structure of one-dimensional biradical molecular chain which is constructed by exploiting the covalency between organic molecules of a diphenyl derivative of s-indacenodiphenalene (Ph2-IDPL). To control the crystallinity, we used gas deposition method. Ultraviolet photoelectron spectroscopy (UPS) revealed developed band structure with wide dispersion of the one-dimensional biradical molecular chain.

PHOTOEMISSION STUDIES OF Pd AND Pt IMPURITIES ON AND IN SILVER

1996 ◽  
Vol 10 (24) ◽  
pp. 1161-1174 ◽  
Author(s):  
W.-D. SCHNEIDER ◽  
F. PATTHEY ◽  
H.-V. ROY ◽  
M.-H. SCHAFFNER ◽  
B. DELLEY
Keyword(s):  
Electronic Structure ◽  
Coordination Number ◽  
Impurity Atom ◽  
Photoelectron Spectroscopy ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Many Body ◽  
Dilute Alloys ◽  
Impurity Model ◽  
Single Impurity ◽  
Different Temperatures

The electronic structure of Pd and Pt atoms adsorbed on the (100), (110), and (111) surfaces of silver and of the related dilute alloys has been studied at different temperatures using ultraviolet photoelectron spectroscopy (UPS). The observed differences in lineshape of the virtual bound palladium 4d (platinum 5d) state on isolated atoms supported on the differently oriented surfaces in comparison with an impurity atom embedded in the first layer and in the bulk are well accounted for by a many-body calculation performed within the Anderson single impurity model. This analysis clearly indicates a stronger sd-hybridization in the bulk than at the surface, consistent with the change in coordination number.

Electronic structure of the valence bands of SnF2 studied by ultraviolet photoelectron spectroscopy

1978 ◽  
Vol 54 (2) ◽  
pp. 220-222 ◽  
Author(s):  
R.T. Poole ◽  
P.J. Orders ◽  
J.G. Jenkin ◽  
R.C.G. Leckey ◽  
J. Liesegang
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Ultraviolet Photoelectron Spectroscopy ◽  
Valence Bands
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