METHOD OF PRODUCING LIGHT EMITTING ELEMENT

WIPO Patent Application WO/2005/011332

A1

A method of producing a light emitting element capable of preventing a time-dependent decrease in the light emission efficiency of a light emitting element having a structure in which an organic compound is held between a pair of electrodes, and prolonging its service life. A method of producing a light emitting element having a plurality of organic-compound layers between a pair of electrodes, characterized by comprising the step of exposing to an atmosphere containing an electron accepting gas at least one layer out of the layers before or after it is formed. The plurality of layers include a light emitting layer, and comprises the light emitting layer and one or at lest two layers selected from among a hole injection layer, a hole transportation layer, a hole inhibition layer, an electron transportation layer and an electron injection layer.

Tsuchiya, Kaoru c/o Semiconductor Energy Laboratory Co. Ltd. (39, Hase Atsugi-shi Kanagawa, 243-0036, JP)
Ikeda, Hisao c/o Semiconductor Energy Laboratory Co. Ltd. (39, Hase Atsugi-shi Kanagawa, 243-0036, JP)

PCT/JP2004/010187

February 03, 2005

July 16, 2004

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SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (398 Hase Atsugi-shi, Kanagawa, Kanagawa, 243-0036, JP)
Tsuchiya, Kaoru c/o Semiconductor Energy Laboratory Co. Ltd. (39, Hase Atsugi-shi Kanagawa, 243-0036, JP)
Ikeda, Hisao c/o Semiconductor Energy Laboratory Co. Ltd. (39, Hase Atsugi-shi Kanagawa, 243-0036, JP)

H01J1/62; H01L51/00; H05B33/10; H05B33/14; H01L51/56; (IPC1-7): H05B33/10; H05B33/14

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