Industrial Technology Research Institute

Shu-Ru Chung

Chih-Cheng Chiang

Kuan-Wen Wang

Hsueh-Shih Chen

Shih-Jung Tsai

Gwo-Yang Chang

Li-Kuei Lin

Chen-Yu Huang

The invention provides a light emitting diode device and a fabrication method thereof. The device comprises a pair of electrodes and one of which is electrically contacted with a holder, an LED chip fixed in the holder, a wrapping material formed in the holder and covering the LED chip, and a plurality of nanocrystals having a quantum dot state dispersed in the wrapping material. The nanocrystals satisfy the formula, ZnCdS and 0&#x3c;x&#x3c;1, and can produce a luminous wavelength of about 400 nm to 800 nm. The device further comprises a plurality of organic molecules bonded to the surface of the nanocrystals. Because a molecular interaction occurs between the organic molecules and the wrapping material, the nanocrystals are uniformly dispersed in the wrapping material to improve luminous uniformity. Furthermore, the wrapping material can protect the nanocrystals from oxidation to avoid efficiency decaying.

Light emitting diode device and fabrication method thereof

The invention provides a preparation method of ZnCdA quantum dot capable of emitting white light, in which A is S or SSe; 0&#x3c;x&#x3c;1 and 0&#x3c;y&#x3c;1. The method includes preparing a sulfur-containing organic solution; mixing a zinc-containing precursor and a cadmium-containing precursor with an organic acid, and dissolving them in a co-solvent to obtain a homogeneous solution; and mixing sulfur-containing organic solution with the homogeneous solution to produce ZnCdA quantum dot.

Preparation method of white light quantum dot

A method for preparing nanowires is disclosed, which comprises the following steps: (a) providing a first precursor solution containing IIB group elements, and a second precursor solution containing VIA group elements; (b) mixing and heating the first precursor solution and the second precursor solution to form a mixed solution; and (c) cooling the mixed solution and filtering the mixed solution to obtain nanowires. The first precursor solution includes compounds of IIB group elements and a surfactant. The second precursor solution includes compounds of VIA group elements. Besides, the surfactant is an organic acid having an aromatic group or a salt thereof.

Nanowires and method for making the same

Growing community of inventors

Taichung County, Taiwan

Shu-Ru Chung