Abstract: A light emitting diode. The light emitting diode comprises a lead frame and an LED chip therein. Packaging material in the lead frame is covers the LED chip. A plurality of ZnX quantum dots dispersed in the packaging material, wherein X is S, Se, Te or a combination thereof. A plurality of organic molecules covers each ZnX quantum dot.

Abstract: A light emitting device includes a semiconductor structure having lateral side faces, and including a light-generating layer, and two omnidirectional reflectors disposed respectively at two sides of the light-generating layer. Each of the omnidirectional reflectors exhibits a periodic variation indielectric constant in such a manner so as to introduce an omnidirectional photonic band gap in a given frequency range such that the radiation generated by the light-generating layer in the frequency range for all incident angles and polarizations can be totally reflected by the omnidirectional reflectors and can be extracted substantially only from the lateral side faces of the semiconductor structure.

Abstract: A light emitting diode. The light emitting diode comprises a lead frame and an LED chip therein. Packaging material in the lead frame is covers the LED chip. A plurality of ZnX quantum dots dispersed in the packaging material, wherein X is S, Se, Te or a combination thereof. A plurality of organic molecules covers each ZnX quantum dot.

Abstract: A white-light LED with omni-directional reflectors includes an LED chip for emitting white-light. A light transmitting material surrounding the LED and phosphor grains is dispersed in order to excite fluorescence via emission of LED. Two omni-directional reflectors are implemented on the top and/or bottom of the LED symmetrically surrounding the light transmitting material and the LED chip. The light from the LED was reflected omni-directionally, via the dielectric omni-directional reflectors, to increasing the efficiency and/or spectral characteristics and uniformity of the visible light emission.

Abstract: A white-light LED with omni-directional reflectors includes an LED chip for emitting white-light. A light transmitting material surrounding the LED and phosphor grains is dispersed in order to excite fluorescence via emission of LED. Two omni-directional reflectors are implemented on the top and/or bottom of the LED symmetrically surrounding the light transmitting material and the LED chip. The light from the LED was reflected omni-directionally, via the dielectric omni-directional reflectors, to increasing the efficiency and/or spectral characteristics and uniformity of the visible light emission.