Organic electroluminescence device and manufacturing method thereof

US8816340B2 · kind B2 · utility

Assignee

• OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD. · CN

Inventors

• Mingjie Zhou · Nanhu, CN
• Ping Wang · North Oaks, US
• Hui Huang · Longbeilingcun, CN
• Xiaoming Feng · Cary, US

Key dates

• Filing date: Sep 30, 2010
• Grant date: Aug 26, 2014
• Expiry date: Sep 30, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/331

Abstract

An organic electroluminescence device comprises the following structure: a conductive base (110), a hole injection layer (120), a light emission layer (140), and a cathode layer (170) are laminated in sequence. The material of the hole injection layer (120) comprises a conductive polymer and an azo initiator. A nano-network structure is provided on the connecting surface of the hole injection layer (120) and the light emission layer (140). After being heated to a higher temperature, the azo initiator can be decompounded to release N2, thus the nano-network structure is formed on the surface of the hole injection layer (120). The nano-network structure can efficiently increase the contacting area of the hole injection layer (120) and the adjacent layer. The injection efficiency of the hole is improved. A manufacturing method of the organic electroluminescence device is also provided.