| 摘要 |
The present invention comprises a method for preparing a nanocrystal having (i) a core comprising a semiconductor comprising A representing a metal or metalloid in the +III oxidation state and B representing an element in the−III oxidation state, coated with (ii) a shell in which the outer portion comprises a semiconductor having the formula ZnS1-xEx, where E represents an element in the−II oxidation state and x is a decimal number such that 0≰x<1, said method comprising a step consisting of heating a mixture of at least one precursor of A, at least one precursor of B, at least one precursor of zinc, at least one precursor of sulphur and, optionally, at least one precursor of E, from a temperature T1 to a temperature T2 greater than T1 in an increasing manner and so as to form, firstly, said core then said shell. The present invention also concerns a nanocrystal obtainable by the invention method and uses thereof. |
