A method is provided for forming an electroluminescent device. The method
comprises: providing a type IV semiconductor material substrate; forming
a p+/n+ junction in the substrate, typically a plurality of interleaved
p+/n+ junctions are formed; and, forming an electroluminescent layer
overlying the p+/n+ junction(s) in the substrate. The type IV
semiconductor material substrate can be Si, C, Ge, SiGe, or SiC. For
example, the substrate can be Si on insulator (SOI), bulk Si, Si on
glass, or Si on plastic. The electroluminescent layer can be a material
such as nanocrystalline Si, nanocrystalline Ge, fluorescent polymers, or
type II VI materials such as ZnO, ZnS, ZnSe, CdSe, and CdS. In some
aspect, the method further comprises forming an insulator film interposed
between the substrate and the electroluminescent layer. In another
aspect, the method comprises forming a conductive electrode overlying the
electroluminescent layer.