Planar fluorescent condenser with scattering particles and fluorescent quantum dots and method for preparing planar fluorescent condenser
A technology of fluorescent quantum dots and scattering particles, which is applied in the field of planar fluorescent concentrators containing scattering particles and copper indium sulfur quantum dots and its preparation, and can solve the problems of restricting the wide application of CIS, complicated preparation process, and low photoelectric conversion efficiency , to achieve the effect of enhancing the light conversion efficiency
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[0072] A method for preparing a plane fluorescent light concentrator, the plane fluorescent light concentrator comprising scattering particles, fluorescent quantum dots and a plane optical waveguide.
[0073] The specific preparation method of the planar fluorescent concentrator includes the following processes:
[0074] (1) Preparation of fluorescent quantum dots. Those skilled in the art can prepare fluorescent quantum dots with reference to the method of the prior art. The preferred method of preparing copper indium sulphur quantum dots (CIS-QDs) is as follows: Weigh cuprous iodide (CuI) and indium acetate ( In(Ac) 3 ) Was added to a three-necked flask, and an excess of 1-dodecanethiol (DDT) and paraffin solution were measured and added to the three-necked flask in turn, and stirred and mixed uniformly. Under the protection of continuous inert gas, heat the above-mentioned mixed solution continuously until the mixed solution turns from black to light red, stop heating and quick...
Example Embodiment
[0083] Example 1
[0084] In this example, the fluorescent material CIS-QDs was synthesized by the "One-Pot Reaction" method. The synthesized CIS-QDs have the characteristics of broadband blue-violet light absorption and broadband red-orange light emission, which can transform blue-violet light Converted into red light, its characteristic spectrum such as Figure 4 Shown. The specific implementation process is:
[0085] (a) Weigh 1mmol CuI and 1mmol In(Ac) 3 , Put into a 50ml three-necked flask, measure 10ml DDT and 20ml liquid paraffin, add them to the three-necked flask in turn, stir and mix well. N in continuous pass 2 Under the protection of, heat the above mixed solution at 200℃ for 20 minutes, the solution turns from black to light red, stop heating and quickly cool to room temperature, wash repeatedly with the mixed solution of n-hexane and absolute ethanol to remove impurities, and then vacuum dry to obtain copper Indium-sulfur quantum dots (CIS-QDs) powder, and finally d...
Example Embodiment
[0089] Example 2
[0090] In this embodiment, the fluorescent material used is a core / shell (Core / Shell) structure coated with ZnS copper indium sulfur quantum dots, and the chemical composition is CuInS 2 / ZnS, the copper indium sulfur quantum dots coated with ZnS on the surface are named CIS / ZS-QDs. The core-shell structure of CIS / ZS-QDs has the characteristics of high quantum yield and adjustable emission wavelength. By coating ZnS, It can convert blue-violet light into red-orange light, and its characteristic spectrum is as Figure 5 Shown; the material used in the optical waveguide is granular PMMA. The specific implementation process is:
[0091] (a) Weigh 1mmol Zn(Ac) 2 In the beaker, add 10ml of liquid paraffin, stir and mix well, set aside;
[0092] (b) Weigh 1mmol CuI and 1mmol In(Ac) 3 , Add to a 50ml three-necked flask, measure 15ml DDT and 10ml liquid paraffin, add them to the three-necked flask in turn, stir and mix evenly, in a continuous flow of N 2 Under the protect...
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