The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 2008
Filed:
Oct. 28, 2005
Zheng-hong LU, Toronto, CA;
Sijian Han, New York, CA;
Yanyan Yuan, Toronto, CA;
Other;
Abstract
The present invention provides layered hole injection structures including one or more layers of fullerenes for application in an organic electroluminescent device. The layered structures include a bi-layered structure including an electrically conductive layer serving as electrical contact to external circuit and a fullerene layer sandwiched between the conductive layer and a hole transport layer. The layered structure may also includes a tri-layered structure stacked sequentially including a first electrically conductive layer, a fullerene layer and a hole injection layer material selected from thermally stable molecules such as CuPc. The layered structure may also include a four-layered structure stacked sequentially including a first electrically conductive layer, a fullerene layer on the conductive layer, a noble metal layer on the fullerene layer and another fullerene layer on the noble metal layer.