TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal oxide thin film is directly or indirectly coupled to a flexible substrate. The oxidizing agent is chosen from acid, metal salt containing oxidizing anion, and inorganic oxidizing reagent. The precursor composition further comprises base. The fuel and/or oxidizing agents comprise metal salt containing metal chosen from group 13 metal, group 14 metal, group 15 metal, transition metal, and lanthanide. The metal oxide thin film comprises electroconductive metal oxide chosen from indium tin oxide, fluorine-doped indium tin oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide, gallium-indium-tin oxide and cadmium oxide, preferably aluminum oxide and cerium oxide. The semiconductor precursor composition used during fabrication of bottom-gate thin film transistor comprises secondary metal salt containing gallium and fuel anion or oxidizing anion, and tertiary metal salt containing zinc and fuel anion or oxidizing anion. The metal oxide nanomaterial is chosen from metal oxide nanoparticles, metal oxide nanosphere, metal oxide nanowire, metal oxide nanoribbon, metal oxide nanorod, metal oxide nanotube and metal oxide nanosheet. The nanomaterial dispersion comprises zinc oxide nanoparticles, zinc oxide nanorods, indium-tin oxide nanoparticles, indium-tin oxide nanorods, lanthanum oxide nanoparticles, lanthanum oxide nanorods or alumina nanoparticles. Preferred Properties: The each thin film formed by a single cycle has thickness of less than 20 nm. The metal oxide thin film has final thickness of 100 nm or more, electroconductivity of 10 second/cm or more, charge mobility of 0.1 cm2/Vs or more and leakage current density of less than 10-3 A/cm2.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The oxidizing anion is chosen from nitrate, perchlorate, chlorate, hypochlorite, azide, peroxide, superoxide, high-valent oxide, N-oxide, persulfate, dinitramide, nitrocyanamide, nitroarylcarboxylate, tetrazolate, and hydrates. The fuel is organic compound chosen from acetylacetone, hexafluoroacetyl acetone, carbonyl group-containing compound (CH3COCHFCOCH3), carbonyl group-containing compound (CH3COCH2C(=NH)CF3), imine group-containing compound (CH3C(=NH)CHFC(=NH)CH3), carbonyl group-containing compound (CH3COCH2C(=NCH3)CF3), imine group-containing compound (CH3C(=NCH3)CHFC(=NCH3)CH3), imine group-containing compound (CH3C(=NH)CHFC(=NCH3)CH3), carbonyl group-containing compound (Ph2POCH2COCH3), urea, N-methyl urea, citric acid, ascorbic acid, stearic acid, nitromethane, hydrazine, carbohydrazide, oxalyl dihydrazide, malonic acid dihydrazide, tetra formal tris azine, hexamethylenetetramine, and malonic anhydride. The fuel is metal or ammonium salt containing organic anion chosen from acetylacetonate, citrate, oxalate, ascorbate and stearate. The solvent or solvent mixture comprises alkoxy alcohol.