An electroluminescent device using an inorganic phosphor configured to produce electroluminescence from the recombination of injected holes and injected electrons is disclosed. A controllable hole injection structure in contact with the inorganic phosphor controls a rate of hole injection into the inorganic phosphor based on a first applied control voltage. A controllable electron injection structure in contact with the inorganic phosphor and separated from the controllable hole injection structure controls a rate of electron injection into the inorganic phosphor based on a second applied control voltage.