研究目的
To develop a novel and convenient method for adjusting the luminescence wavelength of InP/ZnS quantum dots by using zeolite as a nucleation site, replacing the traditional tris(trimethylsilyl)phosphine with tris(diethylamino)phosphine as a cheaper phosphine precursor.
研究成果
The study successfully developed a new approach to regulate the emission wavelength of InP QDs by using the surface of In-Y zeolite with a three-dimensional regular pore structure as a nucleation site. This method allows for the adjustment of the number of InP cores initially formed by changing the amount of In-Y zeolite, thereby controlling the size of the QDs. The method is more convenient for operation and does not require quickly covering the ZnS shell after nucleation in a short time.
研究不足
The study acknowledges that the half-width of InP/ZnS QDs obtained by the zeolite regulation method, although narrower than those obtained by the nucleation time regulation method, still has a relatively large half-width. The nucleation time in the zeolite regulation method was found to be too long, leading to overcompensating detrimental effects arising from uncontrolled Ostwald ripening, which widens the half-width of the quantum dots.