Light emitting device
First Claim
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1. A light emitting device comprising:
- a luminescent portion having at least two laminated layers comprising non-single crystalline silicon containing hydrogen atoms and having a homo-junction; and
at least a pair of electrodes connected electrically to said luminescent portion, and wherein each non-single crystalline silicon layer has an optical band gap of at least 2.0 eV and a localized level density at mid-gap no greater than 1016 cm-3.eV-1.
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Abstract
A light emitting device includes a luminescent layer having at least two layers comprising non-single crystalline silicon containing hydrogen atoms laminated and having a homo-junction, and at least a pair of electrodes connected electrically to the luminescent layer, the non-single crystalline silicon layer having an optical band gap of 2.0 eV or higher and a localized level density at mid-gap of 1016 cm-3.eV-1 or less.
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Citations
25 Claims
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1. A light emitting device comprising:
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a luminescent portion having at least two laminated layers comprising non-single crystalline silicon containing hydrogen atoms and having a homo-junction; and at least a pair of electrodes connected electrically to said luminescent portion, and wherein each non-single crystalline silicon layer has an optical band gap of at least 2.0 eV and a localized level density at mid-gap no greater than 1016 cm-3.eV-1. - View Dependent Claims (2, 3, 4, 5)
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6. A light emitting device comprising:
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a luminescent layer comprising non-single crystalline silicon containing hydrogen atoms; a pair of electrically insulating layers having said luminescent layer sandwiched therebetween; and at least a pair of electrodes electrically connected to said luminescent layer and insulating layers and having said luminescent layer and insulating layers sandwiched therebetween, said luminescent layer having an optical band gap of at least 2.0 eV and a localized level density at mid-gap no greater than 1016 cm-3.eV-1.
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7. A light emitting device comprising:
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a luminescent portion comprising; a P-type conductive layer; a semiconductive intermediate layer; and an N-type conductive layer; and at least a pair of electrodes electrically connected to said luminescent portion, wherein at least one of said layers has a multi-layer structure includes a plurality of first layer regions comprising non-single crystalline silicon containing hydrogen atoms and a plurality of second layer regions having a different optical band gap from said plurality of first layer regions, and wherein said first and second layer regions are laminated alternatively as one unit. - View Dependent Claims (8, 9, 10, 11)
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12. A light emitting device comprising:
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a pair of electrically insulating layers; a luminescent layer sandwiched between said pair of electrically insulating layers; and at least a pair of electrodes electrically connected to said luminescent layer and insulating layers and having said luminescent layer and said insulating layers sandwiched therebetween, wherein said luminescent layer has a multi-layer structure including a plurality of first layer regions comprising non-single crystalline silicon containing hydrogen atoms and a plurality of second layer regions having a different optical band gap from said plurality of first layer regions, and wherein said first and second layer regions are laminated alternatively as one unit. - View Dependent Claims (13, 14)
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15. A light emitting device comprising:
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a luminescent portion comprising a plurality of layer structures each comprising a plurality of layers laminated in the following order; an N-type conductive layer; a first semiconductive intermediate layer; a P-type conductive layer; and a second semiconductive intermediate layer; and at least a pair of electrodes connected electrically to said luminescent portion, wherein said luminescent portion is composed of non-single crystalline silicon containing hydrogen atoms and having an optical band gap of at least 2.0 eV. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A light emitting device comprising:
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a luminescent layer comprising non-single crystalline silicon containing hydrogen atoms; an electrically insulating layer superposed on said luminescent layer; and at least a pair of electrodes electrically connected to said luminescent layer and insulating layer and having said luminescent layer and said insulating layer sandwiched therebetween, said luminescent layer having an optical band gap of at least 2.0 eV and a localized level density at mid-gap no greater than 1016 cm-3.eV-1.
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23. A light emitting device comprising:
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a luminescent layer; an electrically insulating layer superposed on said luminescent layer; and at least a pair of electrodes electrically connected to said luminescent layer and insulating layer and having said luminescent layer and said insulating layer sandwiched therebetween, wherein said luminescent layer includes a multi-layer structure having a plurality of first layer regions comprising non-single crystalline silicon containing hydrogen atoms and a plurality of second layer regions having a different optical band gap from said plurality of first layer regions, wherein said first and second layer regions are laminated alternatively as one unit. - View Dependent Claims (24, 25)
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Specification