Organic semiconductor element
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsTetsuo Tsutsui, Hiroko Yamazaki, Satoshi Seo
Life of this patent
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Abstract
By introducing new concepts into a structure of a conventional organic semiconductor element and without using a conventional ultra thin film, an organic semiconductor element is provided which is more reliable and has higher yield. Further, efficiency is improved particularly in a photoelectronic device using an organic semiconductor. Between an anode and a cathode, there is provided an organic structure including alternately laminated organic thin film layer (functional organic thin film layer) realizing various functions by making an SCLC flow, and a conductive thin film layer (ohmic conductive thin film layer) imbued with a dark conductivity by doping it with an acceptor and a donor, or by the like method.
Claims14
A light-emitting device comprising:
- an anode;
- a first electroluminescent layer over the anode;
- a layer over the first electroluminescent layer, the layer consisting of one of molybdenum oxide, vanadium oxide, and niobium oxide;
- a second electroluminescent layer over the layer;
- and
- a cathode over the second electroluminescent layer,
- wherein each of the first electroluminescent layer and the second electroluminescent layer comprises a hole transporting layer and an electron transporting layer over the hole transporting layer.
A light-emitting device comprising:
- an anode;
- a first electroluminescent layer over the anode;
- a first layer over the first electroluminescent layer, the first layer comprising an electron transporting material and a donor to the electron transporting material;
- a second layer over the first layer, the second layer consisting of one of molybdenum oxide, vanadium oxide, and niobium oxide;
- a second electroluminescent layer over the second layer;
- and
- a cathode over the second electroluminescent layer,
- wherein each of the first electroluminescent layer and the second electroluminescent layer comprises a hole transporting layer and an electron transporting layer over the hole transporting layer.
Dependencies are inferred from the claim text.