The invention relates to europium or samarium-doped terbium molybdates, to a method for producing said compounds, and to the use of the claimed europium or samarium-doped terbium molybdates as conversion lumiophores. The invention also relates to a light-emitting device containing a claimed europium or samarium-doped terbium molybdate.

The invention relates to europium or samarium-doped terbium molybdates, to a method for producing said compounds, and to the use of the claimed europium or samarium-doped terbium molybdates as conversion lumiophores. The invention also relates to a light-emitting device containing a claimed europium or samarium-doped terbium molybdate.

Provided is an o organic electroluminescence element comprising an anode, a cathode and a plurality of composing layers including a light emitting layer sandwiched between the anode and the cathode, wherein an electron transport layer containing the compound represented by Formula (1) is included in the composing layers; the light emitting layer contains a phosphorescence emitting organic metal complex; and the cathode or one composing layer adjacent to the cathode contains a metal or a metal compound belonging to Group 1 or Group 2 of the periodic table of elements, provided that the metal exhibits a standard electrode potential larger than 3 V vs. SHE in a system of the metal ion (M.sup.n+)/the metal (M): ##STR00001##

Provided is an o organic electroluminescence element comprising an anode, a cathode and a plurality of composing layers including a light emitting layer sandwiched between the anode and the cathode, wherein an electron transport layer containing the compound represented by Formula (1) is included in the composing layers; the light emitting layer contains a phosphorescence emitting organic metal complex; and the cathode or one composing layer adjacent to the cathode contains a metal or a metal compound belonging to Group 1 or Group 2 of the periodic table of elements, provided that the metal exhibits a standard electrode potential larger than 3 V vs. SHE in a system of the metal ion (M.sup.n+)/the metal (M): ##STR00001##

A quantum device includes a waveguide that has a first surface, and extends in a first direction parallel to the first surface, a plurality of nanopillars coupled to the first surface and arranged in the first direction, color centers formed in each of the plurality of nanopillars, and electrode pairs provided for each of the color centers, wherein each of the plurality of nanopillars is inclined from the first direction, and extends in a second direction inclined from a normal direction of the first surface, and electric fields are applied to the color centers from the electrode pairs.

A quantum device includes a waveguide that has a first surface, and extends in a first direction parallel to the first surface, a plurality of nanopillars coupled to the first surface and arranged in the first direction, color centers formed in each of the plurality of nanopillars, and electrode pairs provided for each of the color centers, wherein each of the plurality of nanopillars is inclined from the first direction, and extends in a second direction inclined from a normal direction of the first surface, and electric fields are applied to the color centers from the electrode pairs.