Preparation method for high-density PbSe quantum dot silicate glass
A technology of silicate glass and quantum dots, which is applied in the fields of optical communication technology and nanomaterial preparation, can solve the problems of easy volatilization of elemental Se components, and achieve the effects of low price, increased content, and avoidance of high temperature volatilization.
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[0026] Example 1:
[0027] SiO is selected for glass matrix formulation 2 , B 2 O 3 , Al 2 O 3 , ZnO, AlF 3 And NaO 2 , PbO and ZnSe are selected as the precursors of PbSe quantum dots, and the mass fraction ratio is: SiO 2 : B 2 O 3 : Al 2 O 3 :ZnO:AlF 3 : NaO 2 :PbO:ZnSe=56.50%:4.33%:3.85%:8.57%:2.12%:15.11%:5.78%:3.74%. Weigh the raw material SiO 2 : 56.50g; B 2 O 3 : 4.33g; Al 2 O 3 : 3.85g; ZnO: 8.57g; AlF 3 :2.12g; NaO 2 :15.11g; PbO: 5.78g; ZnSe: 3.74g, put the above chemical raw materials in a ball mill and stir them evenly, take them out and put them in a sealed corundum crucible, then put them in a box-type electric furnace, melt at 1400℃ for 1h, then Pour the melt on a metal mold and quickly cool to room temperature to obtain yellow glass.
[0028] Then put the glass in a box-type electric furnace, heat treatment at 530℃ for 5h, take it out and cool it to room temperature rapidly in the air, and obtain a pure black PbSe quantum dot silicate glass sample (denoted as G 1 )...
Example Embodiment
[0029] Example 2:
[0030] SiO is selected for glass matrix formulation 2 , B 2 O 3 , Al 2 O 3 , ZnO, AlF 3 And NaO 2 , PbO and ZnSe are selected as the precursors of PbSe quantum dots, and the mass fraction ratio is: SiO 2 : B 2 O 3 : Al 2 O 3 :ZnO:AlF 3 : NaO 2 :PbO:ZnSe=56.50%:4.33%:3.85%:8.57%:2.12%:15.11%:5.78%:3.74%. Weigh the raw material SiO 2 : 56.50g; B 2 O 3 : 4.33g; Al 2 O 3 : 3.85g; ZnO: 8.57g; AlF 3 :2.12g; NaO 2 :15.11g; PbO: 5.78g; ZnSe: 3.74g, put the above chemical raw materials in a ball mill and stir them evenly, take them out and put them in a sealed corundum crucible, then put them in a box-type electric furnace, melt at 1400℃ for 1h, then Pour the melt on a metal mold and quickly cool to room temperature to obtain yellow glass.
[0031] Then put the glass in a box-type electric furnace, heat treatment at 550℃ for 5h, take it out and cool it to room temperature quickly, and obtain a pure black PbSe quantum dot silicate glass sample (denoted as G 2 ). From XRD...
Example Embodiment
[0032] Example 3:
[0033] SiO is selected for glass matrix formulation 2 , B 2 O 3 , Al 2 O 3 , ZnO, AlF 3 And NaO 2 , PbO and ZnSe are selected as the precursors of PbSe quantum dots, and the mass fraction ratio is: SiO 2 : B 2 O 3 : Al 2 O 3 :ZnO:AlF 3 : NaO 2 :PbO:ZnSe=56.50%:4.33%:3.85%:8.57%:2.12%:15.11%:5.78%:3.74%. Weigh the raw material SiO 2 : 56.50g; B 2 O 3 : 4.33g; Al 2 O 3 : 3.85g; ZnO: 8.57g; AlF 3 :2.12g; NaO 2 :15.11g; PbO: 5.78g; ZnSe: 3.74g, put the above chemical raw materials in a ball mill and stir them evenly, take them out and put them in a sealed corundum crucible, then put them in a box-type electric furnace, melt at 1400℃ for 1h, then Pour the melt on a metal mold and quickly cool to room temperature to obtain yellow glass.
[0034] Then put the glass in a box-type electric furnace, heat treatment at 600℃ for 5h, take it out and cool it to room temperature rapidly in the air, and obtain a pure black PbSe quantum dot silicate glass sample (denoted as G 3 )...
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