TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Properties: The thickness of inducing layer is 2-12 nm. The height of micro-crystal nano-particles of semiconductor micro-nanocrystal layer is 5-100 nm. The thickness of mixing layer and electrode buffer layer is 100 nm or less and 10 nm or less, respectively. Preferred Composition: The weight ratio of donor material and acceptor material is 3:1-1:3. The electrode buffer layer is made of aluminum, copper or lithium fluoride. The metal electrode is silver or aluminum.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The material is 5,5'-bis(4'-methoxydiphenyl-4-yl)-2,2'-dithiophene, or 5,5''-diphenyl-2,2':5',2''-terthiophene. The thickness of organic semiconductor layer is 0-50 nm. The organic semiconductor layer is made of planar or non-planar phthalocyanine. The planar phthalocyanine is copper phthalocyanine, zinc phthalocyanine, nickel phthalocyanine, cobalt phthalocyanine, ferro phthalocyanine, or fluoro phthalocyanine. The non-planar phthalocyanine is vanadyl phthalocyanine, tin oxygen phthalocyanine, tin phthalocyanine, aluminum phthalocyanine, chlorinated phthalocyanine, amino-substituted phthalocyanine or benzimidazole-substituted phthalocyanine. The transparent electrode is indium-tin oxide glass. The P-type organic semiconductor layer comprises metal-free phthalocyanine or metal-containing phthalocyanine and its functional variant. Preferred Arrangements: The semiconductor micro-nanocrystal array, has inducing layer, semiconductor layer and organic semiconductor micro-nano crystal layer, inducing layer (3) and semiconductor layer connected orderly. The inducing layer and organic semiconductor micro-nano crystal layer are formed on semiconductor micro-nano array. A mixing layer containing donor material and receptor material and p-type organic semiconductor layer are connected to mixing layer of acceptor material and n-type organic semiconductor layer, and an electrode buffer layer and metal electrode are connected.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The conductive coating material is poly(ethylene dioxythiophene):poly(styrene sulfonic acid).