TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The substrate is made of glass.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The substrate is made of silicon. The anode is indium tin oxide, fluorine-doped tin oxide, silver (Au), gold (Ag) or aluminum (Al). The cathode is Al, Au, Ag, lithium fluoride (LiF)/Al, LiF/Au or LiF/Ag.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The phosphorescence material is Bis(2-benzo(b)thiophen-2-yl-pyridine)(acetylacetonate)iridium(III); Tris(1-phenylisoquinolinato-C2,N)iridium(III); bis(2-phenylpyridine)(acetylacetonate)iridium(III); bis(2-(2-fluorphenyl)-1,3-benzothiozolato-N, C2')iridium(acetylacetonate) ((F-Bt)2-Ir(acac)); Bis(1-phenylisoquinoline)(acetylacetonate)iridium (III); or iridium tris(2-phenylpyidine). The doping concentration of the phosphorescence material of the donor layer doped by the phosphorescence material is 3-15 wt.%. The donor layer is made of phthalocyanine zinc, phthalocyanine, phthalocyanine copper, tris(4-(5-phenylthiophen-2-yl)phenyl)amine, or N,N'-Bis-(1-naphthalenyl)-N,N'-bis-phenyl-(1,1'-biphenyl)-4,4'-diamine (NPD). The receptor layer is made of 60C, 70C or 3,4,9,10-perylene tetracarboxylic dianhydride. The hollow hole transmission layer is made of 4,4',4''-Tris(N-3-methylphenyl-N-phenylamino)triphenylamine, phthalocyanine, phthalocyanine copper or N,N,N',N'-tetrakis(4-methoxyphenyl)-benzidine, or P-type doping of the above materials. The electronic transmission layer is made of N-arylbenzimidazole, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 4,7-diphenyl-1,10-O-phenanthroline, 4,7-diphenyl-1,10-phenanthroline (BPhen), or N-type doping above materials.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The substrate is made of polyethylene glycol terephthalate or polymethylmethacrylate. The hollow hole transmission layer is made of polydiethylenedioxy thiophene/poly (styrene sulfonic acid) (PEDOT:PSS). The structure of the device is ITO/PEDOT:PSS/NPD:10 wt.% (F-Bt)2 Ir(acac)/NPD/60C/Bphen/LiF/Al.