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. 01, 2014
Filed:
Apr. 14, 2006
Zeev Valentine Vardeny, Salt Lake City, UT (US);
Chuanzhen Liu, Beijing, CN;
Vladimir Kamaev, Saratov Region, RU;
Zeev Valentine Vardeny, Salt Lake City, UT (US);
Chuanzhen Liu, Beijing, CN;
Vladimir Kamaev, Saratov Region, RU;
University of Utah Research Foundation, Salt Lake City, UT (US);
Abstract
An organic light emitting diode (OLED) uses a π-conjugated polymer emissive layer (MEH-PPV) sandwiched between two semitransparent electrodes. The preferred embodiment utilizes an optically thin gold film anode, whereas the cathode was in the form of an optically thick aluminum (Al) film with patterned periodic subwavelength 2D hole array that showed anomalous transmission in the spectral range of the polymer photoluminescence band. At similar current densities we obtained a seven-fold electroluminescence efficiency enhancement with the patterned Al device compared with a control device based on unperforated Al electrode.