Title:
HIGHLY TRANSPARENT NON-METALLIC CATHODES
Document Type and Number:
WIPO Patent Application WO1999020081
Kind Code:
A3
Abstract:
A novel class of low reflectivity, high transparency, non-metallic cathodes (1) useful for a wide range of electrically active, transparent organic devices is disclosed. As a representative embodiment, the highly transparent non-metallic cathode (1) of an OLED employes a thin film of copper phthalocyanine (CuPc) (6) capped with a film of low-power, radio-frequency sputtered indium-tin-oxide (ITO). The CuPc prevents damage to the underlying organic layers during the ITO sputtering process. Due to the low reflectivity of the non-metallic cathode, a non-antireflection-coated, non-metallic-cathode-containing TOLED is disclosed that is 85 % transmissive in the visible, emitting nearly identical amounts of light in the forward and back-scattered directions.
Inventors:
FORREST STEPHEN R
BURROWS PAUL
PARTHASARATHY GAUTAM
O'BRIEN DIARMUID
THOMPSON MARK E
YU YUJIAN
SHOUSTIKOV ANDREI
PETASIS NICOS A
SIBLEY SCOTT
LOY DOUGLAS
KOENE BRIAN E
KWONG RAYMOND C
BURROWS PAUL
PARTHASARATHY GAUTAM
O'BRIEN DIARMUID
THOMPSON MARK E
YU YUJIAN
SHOUSTIKOV ANDREI
PETASIS NICOS A
SIBLEY SCOTT
LOY DOUGLAS
KOENE BRIAN E
KWONG RAYMOND C
Application Number:
PCT/US1998/021171
Publication Date:
August 26, 1999
Filing Date:
October 08, 1998
Export Citation:
Assignee:
UNIV PRINCETON (US)
UNIV SOUTHERN CALIFORNIA (US)
UNIV SOUTHERN CALIFORNIA (US)
International Classes:
H05B33/28; C07C211/61; C07D223/14; C07D223/26; C07D487/22; C09K11/06; H01L33/12; H01L33/26; H01L33/36; H01L33/40; H01L51/00; H01L51/30; H01L51/50; H01L51/52; H05B33/10; H05B33/14; H01L27/32; (IPC1-7): H05B33/28
Foreign References:
| US5457565A | 1995-10-10 |
Other References:
WHITLOCK J B, ET AL.: "INVESTIGATIONS OF MATERIALS AND DEVICE STRUCTURES FOR ORGANIC SEMICONDUCTOR SOLAR CELLS", OPTICAL ENGINEERING., SOC. OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS., BELLINGHAM, vol. 32, no. 08, 1 August 1993 (1993-08-01), BELLINGHAM, pages 1921 - 1934, XP002918896, ISSN: 0091-3286, DOI: 10.1117/12.143713
"TRANSPARENT LIGHT-EMITTING DEVICES", NATURE, NATURE PUBLISHING GROUP, UNITED KINGDOM, vol. 380, no. 6569, 1 March 1996 (1996-03-01), United Kingdom, pages 29, XP002918897, ISSN: 0028-0836, DOI: 10.1038/380029a0
"TRANSPARENT LIGHT-EMITTING DEVICES", NATURE, NATURE PUBLISHING GROUP, UNITED KINGDOM, vol. 380, no. 6569, 1 March 1996 (1996-03-01), United Kingdom, pages 29, XP002918897, ISSN: 0028-0836, DOI: 10.1038/380029a0
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