A method of forming a luminescent semiconductor nanocrystal patterned electroluminescent layer for an organic-inorganic hybrid electroluminescent device, comprising the steps of: i) producing a semiconductor nanocrystal film by dispersing a plurality of photosensitive semiconductor nanocrystals or a photosensitive composition comprising a plurality of photosensitive semiconductor nanocrystals and a photocurable compound in an organic solvent to form a dispersion and coating the dispersion onto a substrate, the photosensitive semiconductor nanocrystal being a semiconductor nanocrystal surface-coordinated with a compound containing a photosensitive functional group represented by the following Formula 1: X − A − B wherein X is NC-, HOOC-, HRN-, POOOH-, RS- or RSS- (in which R is a hydrogen atom or a C 1-10 saturated or unsaturated aliphatic hydrocarbon group); A is a direct bond, an aliphatic organic group, a phenylene group or a biphenylene group; and B is an organic group containing at least one carbon-carbon double bond, which may be substituted with at least one group selected from -CN, -COOH, halogen groups, C 1-5 halogenated alkyl groups, amine groups, C 6-15 aromatic hydrocarbon groups, and C 6-12 aromatic hydrocarbon groups substituted with F, Cl, Br, a halogenated alkyl group, R'O-(in which R' is a hydrogen atom or a C 1-5 alkyl group), -COOH, an amine group or -NO 2; the photocurable compound being selected from polymers containing acryl and/or vinyl group and ether-based compounds; multifunctional acrylate-based compounds, multifunctional polyalkyleneoxide compounds containing at least one acryl and/or vinyl group and polysiloxanes containing at least one acryl and/or vinyl group; ii) exposing the semiconductor nanocrystal film to an electromagnetic wave through a mask to trigger a crosslinking reaction of the compound containing the photosensitive functional group; and iii) developing the exposed film. i) producing a semiconductor nanocrystal film by dispersing a plurality of photosensitive semiconductor nanocrystals or a photosensitive composition comprising a plurality of photosensitive semiconductor nanocrystals and a photocurable compound in an organic solvent to form a dispersion and coating the dispersion onto a substrate, the photosensitive semiconductor nanocrystal being a semiconductor nanocrystal surface-coordinated with a compound containing a photosensitive functional group represented by the following Formula 1: X − A − B wherein X is NC-, HOOC-, HRN-, POOOH-, RS- or RSS- (in which R is a hydrogen atom or a C 1-10 saturated or unsaturated aliphatic hydrocarbon group); A is a direct bond, an aliphatic organic group, a phenylene group or a biphenylene group; and B is an organic group containing at least one carbon-carbon double bond, which may be substituted with at least one group selected from -CN, -COOH, halogen groups, C 1-5 halogenated alkyl groups, amine groups, C 6-15 aromatic hydrocarbon groups, and C 6-12 aromatic hydrocarbon groups substituted with F, Cl, Br, a halogenated alkyl group, R'O-(in which R' is a hydrogen atom or a C 1-5 alkyl group), -COOH, an amine group or -NO 2; the photocurable compound being selected from polymers containing acryl and/or vinyl group and ether-based compounds; multifunctional acrylate-based compounds, multifunctional polyalkyleneoxide compounds containing at least one acryl and/or vinyl group and polysiloxanes containing at least one acryl and/or vinyl group; ii) exposing the semiconductor nanocrystal film to an electromagnetic wave through a mask to trigger a crosslinking reaction of the compound containing the photosensitive functional group; and iii) developing the exposed film.