Efficient Electroluminescence from Type I Quantum Confined Structure Utilizing Organic Dye Materials

MRS Proceedings ◽

10.1557/proc-598-bb3.41 ◽

1999 ◽

Vol 598 ◽

Author(s):

Yutaka Ohmori ◽

Takumi Sawatani ◽

Kazumichi Ando ◽

Katsumi Yosino

Keyword(s):

Band Structure ◽

Energy Band ◽

Organic Dye ◽

Energy Band Structure ◽

Type I ◽

Quantum Confined ◽

Superlattice Structures ◽

Confined Structure

ABSTRACTImprovement of electroluminescence (EL) efficiency by utilizing quantum confined structure, so-called type I superlattice, has been discussed. Superlattice structures, which consist of 8-hydroxyquinoline aluminum (Alq3) and 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD), and of 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) and Alq3, and of (1,10-phenanthroline)-tris -(4,4,4-trifluoro -1-(2-thienyl)-butane-1,3-dionate) europium (III) (Eu(TTA )3phen) and (N,N'-disalicylidene-1,6-hexanediaminate) zinc (II) (1AZM -Hex) are studied. As a result, strong EL emission is observed in the type I superlattice structures. The mechanism of enhancement is discussed using energy band structure.

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Electronic energy band structure of the actinide metals. Final report

10.2172/4488061 ◽

1973 ◽

Author(s):

A. J. Freeman ◽

D. D. Koelling

Keyword(s):

Band Structure ◽

Energy Band ◽

Electronic Energy ◽

Energy Band Structure ◽

Final Report ◽

Electronic Energy Band

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The Optical Properties, Energy Band Structure, and Interfacial Conductance of a 3C-SiC(111)/Si(111) Heterostructure Grown by the Method of Atomic Substitution

Technical Physics Letters ◽

10.1134/s1063785020110243 ◽

2020 ◽

Vol 46 (11) ◽

pp. 1103-1106 ◽

Cited By ~ 1

Author(s):

S. A. Kukushkin ◽

A. V. Osipov

Keyword(s):

Optical Properties ◽

Band Structure ◽

Energy Band ◽

Energy Band Structure ◽

Atomic Substitution

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Energy Band Structure of Germanium

physica status solidi (b) ◽

10.1002/pssb.19670220221 ◽

1967 ◽

Vol 22 (2) ◽

pp. 491-497 ◽

Cited By ~ 3

Author(s):

D. J. Morgan ◽

J. A. Galloway

Keyword(s):

Band Structure ◽

Energy Band ◽

Energy Band Structure

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Energy band structure and persistent currents in a finite-width mesoscopic two-electron ring

Superlattices and Microstructures ◽

10.1016/s0749-6036(09)80021-9 ◽

1994 ◽

Vol 16 (3) ◽

pp. 311-315 ◽

Cited By ~ 13

Author(s):

L. Wendler ◽

V.M. Fomin ◽

A.V. Chaplik

Keyword(s):

Band Structure ◽

Energy Band ◽

Energy Band Structure ◽

Finite Width ◽

Persistent Currents ◽

Electron Ring

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The Energy Band Structure of Polyacene with Soliton Excitation

Modern Physics Letters B ◽

10.1142/s021798499700058x ◽

1997 ◽

Vol 11 (11) ◽

pp. 477-483 ◽

Cited By ~ 5

Author(s):

Z. J. Li ◽

H. B. Xu ◽

K. L. Yao

Keyword(s):

Band Structure ◽

Charge Density ◽

Energy Band ◽

Energy Gap ◽

Electronic States ◽

Energy Band Structure ◽

Energy Spectra ◽

Energy Band Gap ◽

The One ◽

Soliton Excitation

Starting from the extensional Su–Schrieffer–Heeger model taking into account the effects of interchain coupling, we have studied the energy spectra and electronic states of soliton excitation in polyacene. The dimerized displacement u0 is found to be similar to the case of trans-polyacetylene, and equals to 0.04 Å. The energy-band gap is 0.38 eV, in agreement with the results derived by other authors. Two new bound electronic states have been found in the conduction band and in the valence band, which is different from the one of trans-polyacetylene. There exists two degenerate soliton states in the center of energy gap. Furthermore, the distribution of charge density and spin density have been discussed in detail.

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