Abstract: Semiconductor nanoparticles having high luminescence properties that are preferable for applications and uses of biotechnology are provided. With the use of electric charges on the surfaces of particles, the particles and selected polymers are allowed to electrostatically bind to each other, such that the surfaces of the particles are coated. The polymers are allowed to crosslink to each other, resulting in the improved durability of the particles. Further, functional groups contained in the polymers are exposed on the surfaces of the particles. Accordingly, semiconductor nanoparticles that are preferably utilized for applications such as staining and labeling of biopolymers have been synthesized.

Abstract: Semiconductor nanoparticles having high luminescence properties that are preferable for applications and uses of biotechnology are provided. With the use of electric charges on the surfaces of particles, the particles and selected polymers are allowed to electrostatically bind to each other, such that the surfaces of the particles are coated. The polymers are allowed to crosslink to each other, resulting in the improved durability of the particles. Further, functional groups contained in the polymers are exposed on the surfaces of the particles. Accordingly, semiconductor nanoparticles that are preferably utilized for applications such as staining and labeling of biopolymers have been synthesized.

Abstract: A semiconductor light-emitting device has a first conductivity type semiconductor layer, a luminous layer formed on the first conductivity type semiconductor layer, a second conductivity type semiconductor layer formed on the luminous layer, and a transmissive semiconductor layer formed on the second conductivity type semiconductor layer. The transmissive semiconductor layer is pervious to light coming from the luminous layer. The second conductivity type semiconductor layer and the transmissive semiconductor layer have different carrier concentrations, and the carrier concentration of the second conductivity type semiconductor layer is higher than the carrier concentration of the transmissive semiconductor layer.

Abstract: A light emitting diode is composed of a p-type GaP substrate 12 and layers laminated on the p-type GaP substrate 12, including a p-type GaP contact layer 13, a p-type AlInP second cladding layer 14, a p-type AlGaInP active layer 15, an n-type AlInP first cladding layer 16 and an n-type AlGaAs current diffusion layer 17. The entire lateral surfaces of the p-type GaP substrate 12 are processed into a roughened state by a dicing blade. The light emitting diode has high light intensity and its surface can be roughened under any circumstances regardless of its material and orientation so that characteristic failures can be prevented from occurring.

Abstract: Semiconductor nanoparticles having high luminescence properties that are preferable for applications and uses of biotechnology are provided. With the use of electric charges on the surfaces of particles, the particles and selected polymers are allowed to electrostatically bind to each other, such that the surfaces of the particles are coated. The polymers are allowed to crosslink to each other, resulting in the improved durability of the particles. Further, functional groups contained in the polymers are exposed on the surfaces of the particles. Accordingly, semiconductor nanoparticles that are preferably utilized for applications such as staining and labeling of biopolymers have been synthesized.

Abstract: Semiconductor nanoparticles having high luminescence properties that are preferable for applications and uses of biotechnology are provided. With the use of electric charges on the surfaces of particles, the particles and selected polymers are allowed to electrostatically bind to each other, such that the surfaces of the particles are coated. The polymers are allowed to crosslink to each other, resulting in the improved durability of the particles. Further, functional groups contained in the polymers are exposed on the surfaces of the particles. Accordingly, semiconductor nanoparticles that are preferably utilized for applications such as staining and labeling of biopolymers have been synthesized.