Quantum dot white and colored light-emitting devices

A method of producing light of a selected color, comprising:

• (a) providing a population of quantum dots (QDs), wherein each QD of the population comprises a core of an independently selected size and composition, the population comprises a selected size distribution of QDs, and the QDs have a surface adapted to allow the QDs to be dispersed in a host matrix;
• (b) dispersing the QDs in the host matrix without substantial flocculation;
• and
• (c) illuminating the QDs disposed in the host matrix with primary light of an energy greater than the characteristic band gap energy of at least a portion of the QDs,
• whereby the selected color is photoluminescent light emitted by the QDs, light transmitted from the primary light source through the host matrix or a combination thereof.

A method of producing light of a selected color, comprising:

• (a) providing a population of quantum dots (ODs), wherein each OD of the population comprises a core of an independently selected size and composition, the population comprises a selected size distribution of ODs, and the ODs have a surface adapted to allow the ODs to be dispersed in a host matrix;
• (b) dispersing the ODs in the host matrix;
• and
• (c) illuminating the ODs disposed in the host matrix with primary light of an energy greater than the characteristic band gap energy of at least a portion of the ODs,
• whereby the selected color is photoluminescent light emitted by the ODs, light transmitted from the Primary light source through the host matrix or a combination thereof:
• and wherein the host matrix allows light produced by the light source and photoluminescent light emitted by the QDs to pass therethrough.

A method of producing light of a selected color, comprising:

• (a) providing a population of guantum dots (ODs), wherein each OD of the population comprises a core of an independently selected size and composition, the population comprises a selected size distribution of ODs, and the ODs have a surface adapted to allow the ODs to be dispersed in a host matrix;
• (b) dispersing the ODs in the host matrix;
• and
• (c) illuminating the ODs disposed in the host matrix with primary light of an energy greater than the characteristic band gap energy of at least a portion of the ODs.
• wherein the light of the selected color is the combination of photoluminescent light emitted by the QDs and light transmitted from the primary light source through the host matrix.

A method of producing light of a selected color, comprising:

• (a) providing a population of quantum dots (ODs), wherein each OD of the population comprises a core of an independently selected size and composition, the population comprises a selected size distribution of ODs, and the ODs have a surface adapted to allow the ODs to be dispersed in a host matrix;
• (b) dispersing the ODs in the host matrix;
• and
• (c) illuminating the ODs disposed in the host matrix with primary light of an energy greater than the characteristic band gap energy of at least a portion of the ODs,
• whereby the selected color is photoluminescent light emitted by the ODs, light transmitted from the primary light source through the host matrix or a combination thereof;
• and wherein step (a) comprises,
• (i) providing at least two precursor materials, wherein each precursor material has disposed therein a population of QDs having a size, size distribution, composition or combination thereof, selected to be different from that of the population of QDs in any of the other precursor materials,
• (ii) combining the precursor materials, and
• (iii) reacting the precursor materials to form a solid host matrix having QDs disposed therein.

A method of producing light of a selected color, comprising:

• (a) providing a population of quantum dots (QDs), wherein each QD of the population comprises a core of an independently selected size and composition, the population comprises a selected size distribution of ODs, and the ODs have a surface adapted to allow the ODs to be dispersed in a host matrix;
• (b) dispersing the QDs in the host matrix;
• and
• (c) illuminating the ODs disposed in the host matrix with Primary light of an energy greater than the characteristic band gap energy of at least a portion of the ODs,
• whereby the selected color is photoluminescent light emitted by the QDs, light transmitted from the primary light source through the host matrix or a combination thereof;
• and wherein step (a) comprises,
• (i) providing at least two precursor materials, wherein each precursor material has disposed therein a population of QDs having a size, size distribution, composition or combination thereof, selected to be different from that of the population of QDs in any of the other precursor materials,
• (ii) forming a layer of a precursor material;
• (iii) reacting the layer of precursor material to form a solid host matrix layer having QDs disposed therein;
• and
• (iv) repeating steps (ii) and (iii) on the solid host matrix layer formed in step (iii).