Ladas & Parry LLP
Organic electroluminescence element
An organic EL element which has no layer that prevents penetration of holes and electrons to the counter electrode. The organic EL element includes: an anode, a hole injecting and transporting layer formed on the anode, a light emitting layer formed on the hole injecting and transporting layer, an electron injecting and transporting layer formed on the light emitting layer, and a cathode formed on the electron injecting and transporting layer. Ip2≧Ip3 is established when an ionization potential of a constituent material for the light emitting layer is Ip2 and an ionization potential of a constituent material for the electron injecting and transporting layer is Ip3. Ea1≧Ea2 is established when an electron affinity of a constituent material for the hole injecting and transporting layer is Ea1 and an electron affinity of the constituent material for the light emitting layer is Ea2.
Yamagata Promotional Organization for Industrial Technology Dai Nippon Printing Co., Ltd
H H H H H H H H H H H H
H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L
additional inventional additional inventional additional additional additional inventional additional additional inventional inventional
Junji Yasuhiro Toshitaka Atsushi
Kido Iizumi Mori Oda