White light generation combining emissions from exciplex, excimer and electromer in TAPC-based organic light-emitting diodes

详细信息    查看全文

• 作者：Shengyi Yang ; Mingxiao Jiang
• 刊名：Chemical Physics Letters
• 出版年：2009
• 出版时间：8 December 2009
• 年：2009
• 卷：484
• 期：1-3
• 页码：54-58
• 全文大小：1452 K

文摘

By investigating the electroluminescence of bilayer organic light-emitting diodes based on 1,1-bis((di-4-tolylamino)phenyl) cyclohexane (TAPC) and 2,9-dimethyl-4,7-di(phenyl)-1,10-phenanthroline (BCP), a new emission maximized at 480 nm from TAPC/BCP interface was observed and it was confirmed to be an exciplex emission of [TAPC^*BCP]. We found that the emission intensity of this exciplex increases with only increasing the thickness of BCP layer from 10 nm to 30 nm in bilayer device ITO/TAPC(60 nm)/BCP/Al. Being the hole-blocking BCP layer in the bilayer devices, the combination of electromer emission and excimer emission from TAPC, as well as exciplex emission from TAPC/BCP interface, provides a simple way to obtain white light emission.