Quantum rod and method of fabricating the same
A quantum rod includes a core of ZnS semiconductor particle having a rod shape; and a transition metal with which the core is doped and which is biased at one side of a length direction of the core.
1. A quantum rod comprising:
a core of semiconductor particle having a rod shape; and
a transition metal, wherein the core of semiconductor particle is doped with the transition metal only at one of longitudinal ends of the core of semiconductor particle, and the other one of the longitudinal ends of the core of semiconductor particle is not doped with any other chemical element,
wherein the core is made of a chemical compound including Zn and the transition metal is a metal selected from a group consisting of Cu 2+ , Tb 3+ and Mn 2+ , the transition metal has a weight % of about 0.1 to about 50 with respect to the core, and a size of the core is about 10 nm to about 10000 nm.
2. The quantum rod according to claim 1 , wherein the semiconductor particle is a particle consisting of one of ZnSe, ZnO, ZnS, Zn x Cd 1-x Se, and Zn x Cd 1-x S, where 0<x<1.
3. The quantum rod according to claim 1 , wherein the transition metal of Cu 2+ emits green light.
4. The quantum rod according to claim 1 , wherein the quantum rod emits a color of light, the rod shape is longer than Bohr radius of excitation of the semiconductor particle, and the transition metal determines the color of light emitted by the quantum rod.