| abstract |
The invention provides a method for purifying quantum dots, quantum dots, devices and quantum dot compositions. The quantum dot purification method includes: adding a certain amount of precipitant to the system to be purified containing quantum dots, mixing, so that the quantum dots are precipitated, wherein the precipitant includes fatty acids and/or fatty amines, and the precipitant and the system to be purified The molar ratio of the quantum dots ranges from 1 to 10000; the quantum dots are separated from the system to be purified to obtain powdered quantum dots. This method does not use a large amount of organic solvents, is environmentally friendly, non-toxic and harmless; the steps are simple, no repeated cleaning is required, and it has significant economic benefits, which solves the problems of low efficiency and environmental protection in the existing quantum dot purification methods . |