Quantum Dots-量子点 CB As particle Small size Cd;P2(Eg:~3.0ev): No visible light absorbed. gets smaller, VB the band gap gets bigger. Semiconductor Q-Cd3P2 Big size Cd;P2(E:0.5 ev):absorb all wavelength of visible light
Quantum Dots -量子点 Small size Cd3P2 ( Eg: ~ 3.0 eV): No visible light absorbed. As particle gets smaller, the band gap gets bigger. Big size Cd3P2 (Eg: 0.5 eV): absorb all wavelength of visible light
量子点-Quantum Dots 光致发光-Photoluminescence Quantum Dots Ultraviolet Ultraviolet light off light on Quantum dot 00 Quantum Quantum dots bead dots emit light 10 10 Water Nanodevices White molecule Quantum dots blood cell
量子点- Quantum Dots 光致发光---Photoluminescence
量子点-Quantum Dots 光致发光-Photoluminescence Simultaneous excitation at 365 nm 2nm CS 7nm Size-dependent emission When illuminated with ultraviolet light,these solution of semiconductor nano-particles emit light that correspond to their band gap energy. 400450500550600 650700 Wavelength,(nm)
量子点- Quantum Dots 光致发光---Photoluminescence CdS When illuminated with ultraviolet light, these solution of semiconductor nano-particles emit light that correspond to their band gap energy
量子点-Quantum Dots Xiaogang Peng Arkansas Emission Colors 0●0●●● CdSe Bringing Quantum Dot Products to Market Quantum dots evident Bulk Nanocrystal Molecule W<250 400← 一， —→700 250>lh LUMO 1 (nm) PtSe/Te HOMO big small
量子点-Quantum Dots
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