Method for improving thermal stability of Mn-doped quantum dots
A technology of thermal stability and quantum dots, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as low luminous efficiency, achieve good thermal stability, improve thermal stability, and good thermal stability
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Embodiment 1
[0033] see figure 1 (a), figure 2 (a) and Figure (3), weigh 0.03g (0.05mmol) manganese stearate (MnSt 2 ) and measure 12mL of ODE into a 100mL three-neck flask. The high-purity argon atmosphere in the bottle is ensured by repeated vacuuming and reflowing argon. Raise the temperature from room temperature to 110°C for 20 minutes to remove the gas in the bottle. Then the temperature was raised to 260°C, and at 260°C, the Se precursor solution (containing 1.5mmol Se powder, 60mg NaBH 4and 5mL OLA) were quickly injected into the three-necked bottle and kept for 5min to generate MnSe crystal nuclei. Set the temperature of the above solution at 240°C, add 1 / 3 of the Zn precursor (including 1mmol zinc stearate, 0.25mmol stearic acid, and 6mL ODE) into the above solution and keep it for 10min, then raise the temperature to 280°C Keep at ℃ for 10 minutes to promote the diffusion of Mn ions and improve the luminous efficiency of the target quantum dots. Then lower the temperature...
Embodiment 2
[0035] see figure 1 (b), figure 2 (b) and Figure (3), weigh 0.03g (0.05mmol) manganese stearate (MnSt 2 ) and measure 12mL of ODE into a 100mL three-neck flask. The high-purity argon atmosphere in the bottle is ensured by repeated vacuuming and recirculation of argon. Raise the temperature from room temperature to 110°C for 20 minutes to remove the gas in the bottle. Then the temperature was raised to 260°C, and at 260°C, the Se precursor solution (containing 1.5mmol Se powder, 60mg NaBH 4 and 5mL OLA) were quickly injected into the three-necked bottle and kept for 5min to generate MnSe crystal nuclei. Set the temperature of the above solution at 240°C, add 1 / 3 of the Zn precursor (including 1mmol zinc stearate, 0.25mmol stearic acid, and 6mL ODE) into the above solution and keep it for 10min, then raise the temperature to 280°C Keep at ℃ for 10 minutes to promote the diffusion of Mn ions and improve the luminous efficiency of the target quantum dots. Then lower the tem...
Embodiment 3
[0037] Participate in 1(c), 2(c) and Figure (3), weigh 0.03g (0.05mmol) manganese stearate (MnSt 2 ) and measure 12mL of ODE into a 100mL three-neck flask. The high-purity argon atmosphere in the bottle is ensured by repeated vacuuming and recirculation of argon. Raise the temperature from room temperature to 110°C for 20 minutes to remove the gas in the bottle. Then the temperature was raised to 260°C, and at 260°C, the Se precursor solution (containing 1.5mmol Se powder, 60mg NaBH 4 and 5mL OLA) were quickly injected into the three-necked bottle and kept for 5min to generate MnSe crystal nuclei. Set the temperature of the above solution at 240°C, add 1 / 3 of the Zn precursor (including 1mmol zinc stearate, 0.25mmol stearic acid, and 6mL ODE) into the above solution and keep it for 10min, then raise the temperature to 280°C Keep at ℃ for 10 minutes to promote the diffusion of Mn ions and improve the luminous efficiency of the target quantum dots. Then lower the temperature...
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