WANG Ma-hua, ZHU Guang-ping, JU Yong-feng etc. Emission Characteristics of Crown-like ZnO Nanocrystals Induced by Three-photon Absorption and Second Harmonic Generation Effect[J]. Chinese Journal of Luminescence, 2015,36(6): 617-622
WANG Ma-hua, ZHU Guang-ping, JU Yong-feng etc. Emission Characteristics of Crown-like ZnO Nanocrystals Induced by Three-photon Absorption and Second Harmonic Generation Effect[J]. Chinese Journal of Luminescence, 2015,36(6): 617-622 DOI: 10.3788/fgxb20153606.0617.
Emission Characteristics of Crown-like ZnO Nanocrystals Induced by Three-photon Absorption and Second Harmonic Generation Effect
For the sake of investigating the photoluminescence (PL) characteristics and the mechanims from zinc oxide nanocrystals
the crown-like nanostructural samples prepared by vapor phase transport method were excited by laser pulse and Xe-lamp. Under 1 100 nm and 1 150 nm excitation
the ultroviolet emission at 388 nm and visible emission at 575 nm were observed. Based on the third disturbation theory of the interaction between intensive light field and matter and the relationship between the emission intensity and excitation power
it is confirmed that the emission performances under 1 100 nm and 1 150 nm excitation should be attributed to the three-photon absorption process and the second harmonic generation effects. Moreover
the redshift phenomena of the ultroviolet emission was analyzed based on the exciton-exciton inelastic collision recombination process.
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