What are quantum dots (QDs)? As a very rough approximation, an electron in a qua

Question

What are quantum dots (QDs)? As a very rough approximation, an electron in a quantum dot can be thought of as an electron in a 3D box. By analogy to the 2D box, write down an expression for the energy levels for an electron in a 3D box (write an expression for the special case of a cubic box, with all sides having a length L) Consider a transition from the ground state: n_x = -1, n_y = 1, n_z = 1 to the excited state n_x = 2, n_y=2, n_z = 1. What are the dimensions of a cubic QD if the wavelength of light absorbed is 570 nm?

Explanation / Answer

A semiconductor crystel pm nanometre dimensions with distinctive conductive properties determined by its size.Many type of quantum dot will emit light of specific frequencies if light or electricity is applied to them and these frequencies can be precisely tuned by changing size,shape and material,giving rise to many application.These also called artificial atoms.

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