DOI: 10.1557/proc-488-719. UV Photoemission Study of Interfaces Related to Organic EL Devices

UV Photoemission Study of Interfaces Related to Organic EL Devices

10.1557/proc-488-719

Crossref journal-article

Springer Science and Business Media LLC

MRS Proceedings (297)

Abstract

AbstractInterfacial electronic structures related to organic electroluminescent (EL) devices were studied by UV photoemission spectroscopy (UPS). The two classes of interfaces studied were: (1) interfaces in a typical multilayer device AI/AIq3TPD/ITO, where Alq3 is tris(8-hydroxyquinolino)- aluminum, TPD is N,N×-diphenyl-NN×-(3-methylphenyl)- 1, 1‘-biphenyl-4,4’-diamine, and ITO is indium tin oxide, and (2) TTN/metals and TCNQ/metals interfaces, where TTN is tetrathianaphthacene and TCNQ is tetracyanoquinodimethane. The UPS studies of the specimen formed by the successive deposition of TPD, Alq3, and Al on ITO revealed interfacial energy diagrams, with the vacuum level shift of - 0.25 eV (downward) and - 0.1 eV (downward) at the TPD / ITO and the Alq3 / TPD interfaces, respectively. The deposition of TTN and TCNQ on metals showed opposite direction of the shift of the vacuum level, with the positive and negative charge at the vacuum side. This can be explained by considering the chargetransfer between the metal and the organic molecule, with these directions being consistent with the electron donating and accepting ability of these molecules.

Bibliography

Sugiyama, K., Seki, K., Ito, E., Ouchi, Y., & ISHII, H. (1997). UV Photoemission Study of Interfaces Related to Organic EL Devices. MRS Proceedings, 488.

Authors 5

Kiyoshi Sugiyama (first)
Kazuhiko Seki (additional)
Eisuke Ito (additional)
Yukio Ouchi (additional)
Hisao ISHII (additional)

References 17 Referenced 1

[11] Seki K. , Ito E. , and Ishii H. , Syn. Metals, in press.
10.1063/1.114370
10.1016/S0379-6779(97)81177-0
10.1016/S0379-6779(97)81185-X
10.1063/1.117064
10.1063/1.116465
10.1080/10587259608042292
10.1017/CBO9780511600333
10.1109/16.605471
{'key': 'S1946427400239912_ref001', 'first-page': '1', 'volume': '49', 'author': 'Greenham', 'year': '1995', 'journal-title': 'Solid State Phys.'} / Solid State Phys. by Greenham (1995)
10.1007/3-540-08685-4
10.1016/0040-6090(95)06765-5
10.1016/S0368-2048(96)80098-3
10.1080/10587259708032338
[12] Ishii H. , Sugiyama K. , Yoshimura D. , Ito E. , Ouchi Y. , and Seki K. , IEEE J. Selected Topics Quant. Electronics., in press.
[13] Seki K. and Ishii H. , J. Electron Spectrosc., in press.
10.1063/1.1684483

Dates

Type	When
Created	14 years, 4 months ago (April 5, 2011, 9:46 p.m.)
Deposited	4 years, 6 months ago (Feb. 24, 2021, 5:07 p.m.)
Indexed	1 year, 6 months ago (Feb. 6, 2024, 6:57 p.m.)
Issued	28 years, 8 months ago (Jan. 1, 1997)
Published	28 years, 8 months ago (Jan. 1, 1997)
Published Online	14 years, 6 months ago (Feb. 10, 2011)
Published Print	28 years, 8 months ago (Jan. 1, 1997)

Funders 0

None

BibTeX

@article{Sugiyama_1997, title={UV Photoemission Study of Interfaces Related to Organic EL Devices}, volume={488}, ISSN={1946-4274}, url={http://dx.doi.org/10.1557/proc-488-719}, DOI={10.1557/proc-488-719}, journal={MRS Proceedings}, publisher={Springer Science and Business Media LLC}, author={Sugiyama, Kiyoshi and Seki, Kazuhiko and Ito, Eisuke and Ouchi, Yukio and ISHII, Hisao}, year={1997} }

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