Method for realizing quantum regulation and control on upconversion luminescence of rare earth-doped material based on micro-nano resonant structure

Abstract

The invention discloses a method for realizing quantum regulation and control on upconversion luminescence of a rare earth-doped material based on a micro-nano resonant structure, which comprises the following steps of: modulating a resonant mode, inhibiting radiative transition of a luminescence channel, and promoting particles in various excited states to be redistributed, including the processes of energy transfer and non-radiative transition of the particles among the different excited states, so as to realize quantum regulation and control on the upconversion luminescence of the rare earth-doped material. When the resonance wavelength of the micro-cavity is in the emission wavelength of the nanoparticles, more particles are gathered in the excited state of one allowed channel, so that the light emission of the micro-nano resonant cavity is enhanced, and the light field mode in the micro-nano resonant cavity is corrected; quantum regulation and control are carried out on multi-step electron transition processes (including radiation transition and non-radiation transition) among multiple energy levels through a resonance mode; when the resonant wavelength of the microcavity is at the emission wavelength of the nanoparticles, the up-conversion luminescence intensity at the position can be enhanced, and up-conversion luminescence of other unneeded emission wavelengths can be inhibited, so that the unneeded luminescence process can be inhibited, the luminescence process at the needed specific wavelength can be promoted, and monochromatic luminescence can be realized.

Description

technical field [0001] The invention relates to a light-emitting technology, in particular to a control method for up-conversion light-emitting of rare-earth-doped materials. Background technique [0002] In recent years, because rare earth lanthanides have the characteristics of long excited state energy level lifetime and energy level step distribution, upconversion luminescent materials doped with lanthanide ions have attracted a lot of researchers' attention, and gradually showed their application in biomarkers and biological markers. The application value of imaging, lighting, three-dimensional stereoscopic display, laser, solar cell and so on. During upconversion luminescence, the activator is usually an ion that is incorporated as a luminescence center. The up-conversion luminescence process refers to the absorption of two or more low-energy photons by the luminescent center, the excitation of the ground state electrons to a lower excited state, and the transition of...

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Problems solved by technology

[0003] Since upconversion luminescence is a nonlinear process, its luminescence process often involves multi-step electronic transitions and multi-wavelength photon emission between excited rare earth ions between multi-energy levels, as well as energy transfer and quenching effects between adjacent ions (limited Rare earth ion doping concentration), so that the luminous efficiency (especially its up-conversion luminescence) of doped rare earth materials is generally low, and it is difficult to meet its application in micro-optical devices

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