Denso Corporation

Kabushiki Kaisha Toyota Chuo Kenkyusho

Koichi Sakaguchi

Masayuki Katayama

Koji Noda

Tomohiko Mori

Kazushige Kojima

Tetsuya Katoh

Kunio Akedo

Yoshihiro Kikuzawa

Toshikazu Satoh

There is provided a polymer or low-molecular-weight compound multilayer type organic EL device configured such that a light-emitting layer formed on a hole transport layer includes a mixture of a polymer material and a low-molecular weight material. With such a configuration, the low-molecular-weight material added to the polymer material serves as a binder filling the gap of the steric hindrance to form entanglement of the polymer material and the low-molecular-weight material. This results in that the interface between the hole transport layer and the light-emitting layer is an interface high in adhesion and also high in carrier injectability. Further, optimization of the formation conditions and materials can achieve still higher reliability and longer lifetime.

Organic luminescent device and manufacturing method thereof

Growing community of inventors

Nagoya, Japan

Koichi Sakaguchi