Method of producing three fundamental quantum dot CdSeTe

Abstract

The invention discloses a making method of CdSeTe as ternary quantum point in the nanometer technical domain, which comprises the following steps: adopting cadmium oxide or cadmium inorganic salt as Cd source, Se powder as Se source and Te powder as Te powder; making long chain fat dissolve the cadmium oxide or cadmium inorganic salt to form Cd prosoma; using phosphine to dissolve Se and Te to form Se and Te prosoma; reacting Cd prosoma, Te prosoma and Se prosoma in the liquid paraffin; obtaining CdSeTe quantum point; adopting long-chain fat as the stabilizer to generate the CdSeTe quantum point. The invention improves the fluorescent quantum efficiency in the near-infrared zone with even grain size distribution and good stability, which can be widely used in the biology due to good dispersibility, evenness and optical property of CdSeTe quantum point product.

Description

technical field

[0001] The invention relates to a preparation method in the field of nanotechnology, in particular to a preparation method of ternary quantum dot CdSeTe. Background technique

[0002] In recent years, nanotechnology has become one of the frontier fields of widespread concern, and quantum dots (QDs) are semiconductor nanoparticles composed of II-VI and III-V elements with a diameter of 1-10nm. , can receive excitation light to produce fluorescence, and the wavelength of fluorescence emission can be adjusted by changing the size of quantum dots, so quantum dots of different sizes can be excited by a single wavelength of light to emit fluorescence of different colors, and have high fluorescence quantum A series of special optical properties such as efficiency, molar extinction coefficient (10-1000 times that of organic dyes), narrow and symmetrical fluorescence emission spectrum, large Stokes shift between excitation and emission spectra, strong photobleaching r...

Images