Photogeneration mechanism of charged carriers in copper-phthalocyanine thin films

Yamamoto, Katsunobu; Egusa, Syun; Sugiuchi, M.; Miura, Akira

doi:10.1016/0038-1098(93)90907-5

Cited by 11 publications

(2 citation statements)

References 18 publications

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“…[33] Egusa and collaborators developed the displacement current method for examining the injection character and also roughly estimating the barrier height, but its application has so far been limited. [61,62] In such a situation, a more direct microscopic method is desired, and PEYS has recently been used by many workers. [63] In this technique, the total number of photoelectrons per photon (photoemission yield) is measured as a function of the photon energy.…”

Section: Energy Level Alignment At the Interfaces Including Organic Layersmentioning

confidence: 99%

Energy Level Alignment and Interfacial Electronic Structures at Organic/Metal and Organic/Organic Interfaces

et al. 1999

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The function of electronically functional organic materials often originates at an interface, one example being organic electroluminescent devices (the Figure shows a typical energy diagram). Therefore, elucidation of the electronic structure at interfaces will lead to a better understanding of these devices, enabling their performance to be improved. Basic concepts are reexamined and recent progress in the area is reviewed.

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Section: Energy Level Alignment At the Interfaces Including Organic Layersmentioning

confidence: 99%

Energy Level Alignment and Interfacial Electronic Structures at Organic/Metal and Organic/Organic Interfaces

et al. 1999

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show abstract

“…The I p and E A values of the molecules have large effects. One of the main causes of the deviation of the apparent I p and E A values from the real values is the presence of impurities in the atmosphere, including oxygen, for p-type donor compounds and alkali metal ions and amines for n-type acceptor compounds. We found that organic thin films which were prepared and measured in a high vacuum without being exposed to the air showed the injection properties corresponding nearly to the real I P and E A values …”

Section: Resultsmentioning

confidence: 99%

Molecular Design, Syntheses, and Physical Properties of Nonpolymeric Amorphous Dyes for Electron Transport

1997

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Relationships between electrical properties and molecular structures for various nonpolymeric amorphous dyes were investigated. Absorption maximum wavelengths (λobs) for amorphous films were found to be nearly equal to those for solution samples. When the parameters of the used PPP−CI MO method were modified so as to reproduce the λobs values, the calculated HOMO and LUMO energy levels corresponded with the reported ionization potential (I p) and electron affinity (E A) values. Electric carrier transport properties between dye films and metal electrodes (Au or Al) were found to be correlated with the HOMO and LUMO levels. For strong donor and acceptor dyes, impurity carrier effects were generally observed. For weak donor and acceptor dyes, carrier injection was difficult. Carrier injection phenomena without the influence of impurities were observed for moderate donor and acceptor dye films. Amorphous dyes with cyanovinyl substituents or oxadiazole rings were designed to allow reversible electron transport and were newly synthesized.

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Spectroscopic Ellipsometry Studies of Indium Phthalocyanine Films

Chen¹,

Gu²,

Gan³

1995

Phys. Stat. Sol. (a)

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Spectroscopic ellipsometry measurements are employed to investigate vacuum sublimed indium phthalocyanine (InPc) thin films on single‐crystal silicon by a new type of scanning photometric ellipsometer in which the analyser and polarizer rotate synchronously. The complex dielectric function and optical constants of the film are obtained in the wavelength range 550 to 800 nm. It is found that there is a comparatively large absorption region at 600 to 800 nm for vacuum sublimed InPc film and the exciton coupling greatly influences its absorption spectrum.

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Photogeneration mechanism of charged carriers in copper-phthalocyanine thin films

Cited by 11 publications

References 18 publications

Energy Level Alignment and Interfacial Electronic Structures at Organic/Metal and Organic/Organic Interfaces

Energy Level Alignment and Interfacial Electronic Structures at Organic/Metal and Organic/Organic Interfaces

Molecular Design, Syntheses, and Physical Properties of Nonpolymeric Amorphous Dyes for Electron Transport

Spectroscopic Ellipsometry Studies of Indium Phthalocyanine Films

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