as europium with or without co activators such as chlorine or other halogen or aluminum yttrium or lanthanum oxides double oxides or oxysulfides with or without rare earth activators and strontium sulfide activated with cerium fluoride organic phosphors may also be used the microelectronic light emitting device of this invention is especially well suited for integration into an array such as a two dimensional matrix array of microelectronic display devices each device being addressable by selective application of bias voltages to excite light emission in such an array the devices may be arranged in pairs such that a first or second emitter electrode of one of the devices is in electrical contact with a first or second emitter electrode of the other device of the pair respectively a number of adjacent devices of a display may be combined with common driving connections to form a super pixel the devices may also be combined in sets forming a segment display such as the conventional seven segment type of character display or character displays with more or fewer segments for applications such as 34 heads up 34 displays and or augmented reality displays for example the array of devices may be fabricated entirely from substantially transparent materials fig5 shows a plan view of a portion of an array of light.