Organic electroluminescence devices using pyrazolo [3,4B] quinoxaline derivatives
申请人:——
公开号:US20040043247A1
公开(公告)日:2004-03-04
An organic electroluminescence device which includes an anode, a cathode, a hole transport layer, an electron transport layer, and at least one organic luminescent medium doped with a pyrazolo[3,4b]quinoxaline derivative is disclosed. The present device provides improved efficiency, and the emission band associated therewith is surprisingly narrow. The improved green emitting organic electroluminescence device exhibits high color purity.