Organic electroluminescent device and its prepn.
Title:
Organic electroluminescent device and its prepn.
Application Number:
01136040
Application Date:
2001/09/29
Announcement Date:
2002/04/17
Pub. Date:
Publication Number:
1345172
Announcement Number:
1149003
Grant Date:
2004-5-5
Granted Pub. Date:
2004-5-5
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
H05B 33/00, H05B 33/10, H05B 33/12, H05B 33/14, H05B 33/26
Applicant(s):
Qinghua Univ.
Inventor(s):
Wang Liduo, Gao Yudi, Qiu Yong
Key Words:
Organic electroluminescent, device, prepn.
Abstract:
The invention discloses an organic electro-luminescence device and its preparation. The device includes first and second electrode layers, positive hole transport layer between said two electrode layers, luminescence layer being able to transfer electron and buffer layer between first electrode and positive hole transport layer. The buffer layer is made by using heat evaporation plating method to coat film of organic material on first electrode and the organic material is Teflon. The film on buffer layer possesses structure with nanometer size. The invention provides high efficiency for injection of positive hole and increases luminescence efficiency and stability.
Claim:
Priority:
PCT:
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