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What is the physical mechanism behind the dependence of luminescence wavelength of quantum dots on their particle size?

What is the physical mechanism behind the dependence of luminescence wavelength of quantum dots on their particle size?

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Answer The Questions: 1) What is the physical mechanism behind the dependence of luminescence wavelength of quantum dots on their particle size? 2) How do the optical and electrical properties of nanomaterial change with size? 3) Define what we mean by Nanomaterials? List three forms of Nanomaterials? 4) Name two properties that can differ for nanosized objects and bulk material 5) Given a QD of dimensions 20 nm x20 nm x40 nm, I. Calculate the energies (in eV) of the lowest two states, distinguishing between those with the same energy. II. What is the wavelength of the radiation emitted in the transition between the lowest two states of different energies? h 6.626 x10 Js, m 9.lx 10 kg %3D
Transcribed Image Text:Answer The Questions: 1) What is the physical mechanism behind the dependence of luminescence wavelength of quantum dots on their particle size? 2) How do the optical and electrical properties of nanomaterial change with size? 3) Define what we mean by Nanomaterials? List three forms of Nanomaterials? 4) Name two properties that can differ for nanosized objects and bulk material 5) Given a QD of dimensions 20 nm x20 nm x40 nm, I. Calculate the energies (in eV) of the lowest two states, distinguishing between those with the same energy. II. What is the wavelength of the radiation emitted in the transition between the lowest two states of different energies? h 6.626 x10 Js, m 9.lx 10 kg %3D
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