The present invention relates to a method for preparing indium phosphide (InP) quantum dots and a method for preparing InP/ZnS core/shell quantum dots. A method for preparing InP quantum dots comprises the following steps: a) inputting and mixing an indium precursor and a solvent in a reactor, and heating the mixture to be evacuated; and b) adding white phosphorus to the reactor in the step a), pyrolyzing the mixture prepared in the step a) and the white phosphorus and synthesizing InP quantum dots.
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