TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: In the complex (C1), the at least one metal particle (preferably metal nanoparticles) is bound to a surface of the nanocrystal; the edges or ends of the nanocrystal; or surround the nanocrystal to form a continuous layer (preferably bound to a surface of the semiconductor nanocrystal, in which the semiconductor nanocrystal-metal complex has a core-shell structure comprising a core formed from the semiconductor nanocrystal and a shell formed from the metal particles). The semiconductor nanocrystal has a shape selected from a sphere, tetrahedron, cylinder, rod, triangle, disc, tripod, tetrapod, cube, box, star, or tube. Preferred components: The semiconductor nanocrystal of the complex (C1) comprises a material selected from Group II-VI (preferably III-V, or IV-VI, especially IV) semiconductor compounds, and their mixtures (preferably CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, PbS, PbSe, PbTe, AlN, AlP, AlAs, GaN, GaP, GaAs, InN, InP, and/or InAs). The metal particles are selected from Au, Ag, Cu, Pt, Pd, Ni, Fe, or Co particles.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent is selected from the toluene, chloroform, hexane, oleylamine, trioctylamine, octadecene, or octyl ether. The dispersant is selected from oleic acid, stearic acid, palmitic acid, hexylphosphonic acid, n-octylphosphonic acid, tetradecylphosphonic acid, octadecylphosphonic acid, trioctylphosphine, trioctylphosphine oxide, n-octyl amine, hexadecyl amine, hexane thiol, octane thiol, or octadecane thiol. Preferred Method: The metal precursor is prepared by dissolving an organic solvent-soluble organometallic complex in a solvent and a dispersant; and reacting the solution. The reducing occurs at room temperature. EXAMPLE - Spherical Semiconductor nanocrystal-metal (CdSeS/Au) complex was prepared as follows. Trioctylamine (TOA) (16 g), oleic acid (0.5 g) and cadmium oxide (0.4 ml) were mixed. The reaction temperature of the mixture was adjusted to about 300degreesC with stirring to prepare a cadmium precursor solution. Separately, a selenium (Se) powder was dissolved in trioctylphosphine (TOP) to obtain an Se-TOP complex solution (1 M), and a sulfur powder was dissolved in TOP to obtain S-TOP complex solution (0.4 M). A mixture of the S-TOP complex solution (0.5 ml) and the Se-TOP complex solution (0.5 ml) was rapidly fed to the cadmium precursor solution, followed by stirring for 4 minutes to form a CdSeS nanocrystal or quantum dot (QD). Hydrogen tetrachloroaurate (HAuCl4) (0.017 g) was dissolved in tetrahydrofuran (THF), and then oleylamine (OAm) (4 ml) was added to it, to obtain a gold precursor solution. To the gold precursor solution was added solution of the CdSeS nanocrystal in toluene (1 wt.%, 1 ml). The resulting mixture was stirred for 3 hours at room temperature (at 23-28degreesC) to prepare a semiconductor nanocrystal-metal (CdSeS/Au) complex. The transmission electron microscope (TEM) image of the semiconductor nanocrystal-metal (CdSeS/Au) complex, showed that at least one metal particle is bound to the surface of the spherical semiconductor nanocrystal. The characteristics of the spherical semiconductor nanocrystal-metal complex obtained were then evaluated. After the spherical semiconductor nanocrystal-metal complex and the semiconductor nanocrystal quantum dot (QD) , they were rapidly cooled to room temperature. Ethanol as a non-solvent was separately added to the nanocrystal-metal complex and the nanocrystal, and the resulting mixtures were centrifuged. The obtained precipitate was separated from the respective supernatants, and dispersed in toluene to prepare a solution of the CdSeS nanocrystal (1 wt.%) and solution of the semiconductor nanocrystal-metal (CdSeS/Au) complex. The absorption spectra and photoluminescence spectra of the CdSeS nanocrystal solution and the semiconductor nanocrystal-metal (CdSeS/Au) complex solution were obtained. The results indicated that the initial absorption peak and the emission peak of the CdSeS semiconductor nanocrystal were observed at 580 nm and 598 nm, respectively, whose full-width half maximum (FWHM) was about 30 nm. In contrast, the initial absorption peak of the semiconductor nanocrystal-metal CdSeS/Au complex was observed at a wavelength of 582 nm. The CdSeS/Au complex had a ten-fold higher emission intensity than the CdSeS semiconductor nanocrystal, but exhibited substantially no luminescence properties.