Post-processing methods of quantum dots
A technology of quantum dots and quantum dot solution, applied in the field of quantum dot preparation, can solve problems such as insufficient solubility of quantum dots
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Embodiment 1
[0128] 1. The preparation of oil-soluble red CdSe quantum dots is as follows:
[0129] 11) Cadmium oleate {Cd(OA) 2} Preparation of precursors
[0130] Add 1mmol of cadmium oxide (CdO), 8ml of oleic acid (OA) and 15ml of octadecene (ODE) into a three-necked flask, first vacuumize at room temperature for 30mins, heat to 180°C and exhaust argon for 60mins, then maintain 180°C for 30mins in vacuum, cool Set aside at room temperature.
[0131] 12) Preparation of Selenium (Se) Precursor 1:
[0132] Add 10mmol of Se to 10ml of trioctylphosphine oxide (TOP), heat to 170°C for 30min, then cool down to 140°C.
[0133] 13) the cadmium oleate {Cd(OA) in step 11) 2}Heat the precursor to 300°C, extract 2ml of selenium (Se) precursor in step 2) and add it to a three-necked flask to react for 10 minutes to prepare CdSe quantum dots. After stopping the reaction, cool to room temperature and add toluene and methanol for centrifugation, washing and drying. Red CdSe quantum dots dispersed i...
Embodiment 2
[0145] A quantum dot post-processing method, comprising the following steps:
[0146] 1. The preparation of oil-soluble red CdZnSeS / ZnS quantum dots is as follows
[0147] 11) Cadmium oleate {Cd(OA) 2} with zinc oleate {Zn(OA) 2} Preparation of precursors:
[0148] Add cadmium oxide (CdO) 1mmol, zinc acetate {Zn(Ac) 2}8mmol, 8ml of oleic acid (OA) and 15ml of octadecene (ODE) were first vacuumed at room temperature for 30mins, heated to 180°C and exhausted with argon for 60mins, then kept at 180°C for 30mins, cooled to room temperature for later use.
[0149] 12) Preparation of Selenium (Se) Precursor 1
[0150] Add 10mmol of Se to 10ml of trioctylphosphine oxide (TOP), heat to 170°C for 30min, then cool down to 140°C.
[0151] 13) Preparation of sulfur (S-TOP) precursor II:
[0152] Add 20mmol of S into 10ml of trioctylphosphine oxide (TOP), heat to 170°C for 30min, then cool down to 140°C.
[0153] 14) the cadmium oleate {Cd(OA) in step 11) 2} with zinc oleate {Zn(OA...
Embodiment 3
[0165] A quantum dot post-processing method, comprising the following steps:
[0166] 1. The preparation of oil-soluble red CdSe / ZnSe quantum dots is as follows
[0167] 11) Cadmium oleate {Cd(OA) 2} with zinc oleate {Zn(OA) 2} Preparation of precursors:
[0168] Add cadmium oxide (CdO) 1mmol, zinc acetate {Zn(Ac) 2}8mmol, 8ml of oleic acid (OA) and 15ml of octadecene (ODE) were first vacuumed at room temperature for 30mins, heated to 180°C and exhausted with argon for 60mins, then kept at 180°C for 30mins, cooled to room temperature for later use.
[0169] 12) Preparation of Selenium (Se) Precursor 1:
[0170] Add 10mmol of Se to 10ml of trioctylphosphine oxide (TOP), heat to 170°C for 30min, then cool down to 140°C.
[0171] 13) Preparation of sulfur (S-TOP) precursor II:
[0172] Add 20mmol of S into 10ml of trioctylphosphine oxide (TOP), heat to 170°C for 30min, then cool down to 140°C.
[0173] 14) Heat the precursors of cadmium oleate {Cd(OA)2} and zinc oleate {Zn...
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