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A kind of optical amplification material based on perovskite quantum dot glass and its preparation method and application

A quantum dot glass, optical amplification technology, applied in glass manufacturing equipment, glass furnace equipment, active medium materials, etc., can solve the problem of no research on optical amplification characteristics

Active Publication Date: 2021-12-07
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This article only studies the fluorescence properties of the material, and does not study the light amplification properties

Method used

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  • A kind of optical amplification material based on perovskite quantum dot glass and its preparation method and application
  • A kind of optical amplification material based on perovskite quantum dot glass and its preparation method and application
  • A kind of optical amplification material based on perovskite quantum dot glass and its preparation method and application

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Comparison scheme
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Embodiment 1

[0036] The chemical molar ratio of the perovskite quantum dot glass material of the present embodiment is B 2 o 3 : SiO 2 :ZnO:Al 2 o 3 : Cs 2 CO 3 :PbBr:NaBr=44:38:9:5:7:15:15. Raw material selection analytically pure B 2 o 3 , SiO 2 , ZnO, Al 2 o 3 , Cs 2 CO 3 , PbBr, NaBr. According to the molar ratio, after mixing evenly, put it in an alumina crucible, cover the crucible, heat at 1300 ° C for 20 minutes to volatilize the raw materials into the gas phase, and pour it on a stainless steel plate for rapid cooling and forming.

[0037] Using a pulsed laser (wavelength: 490nm, pulse width: 25ps, repetition rate: 1Hz) to excite the prepared sample, a wider fluorescence can be observed, when the energy increases to 0.51mJ / cm 2 At 544nm, the half-width of the spectrum was observed to be significantly narrowed, and the half-width was 5nm. The emission spectra produced by excitation under different pump energies are as follows figure 2 shown.

[0038]Using a pulsed...

Embodiment 2

[0040] The molar ratio of the perovskite quantum dot glass material of the present embodiment is B 2 o 3 : SiO 2 :ZnO:Al 2 o 3 : Cs 2 CO 3 :PbBr:NaBr=42:36:7:4:5:13:13. Raw material selection analytically pure B 2 o 3 , SiO 2 , ZnO, Al 2 o 3 , Cs 2 CO 3 , PbBr, NaBr. According to mole percentage ingredients, after mixing evenly, put it in an alumina crucible, cover the crucible, heat at 1050°C for 20min to volatilize the raw materials into gas phase, and pour it on a stainless steel plate for rapid cooling and forming.

Embodiment 3

[0042] The molar ratio of the perovskite quantum dot glass material of the present embodiment is B 2 o 3 : SiO 2 :ZnO:Al 2 o 3 : Cs 2 CO 3 :PbBr:NaBr=46:40:10:7:9:17:17. Raw material selection analytically pure B 2 o 3 , SiO 2 , ZnO, Al 2 o 3 , Cs 2 CO 3 , PbBr, NaBr. According to mole percentage ingredients, after mixing evenly, place in alumina crucible, cover the crucible, heat at 1500°C for 20min to volatilize the raw materials into gas phase, pour it on a stainless steel plate for quenching and forming.

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Abstract

The invention relates to a light amplification material based on perovskite quantum dot glass and its preparation method and application. The material includes: a gain medium for receiving continuous laser radiation to excite photons, and the gain medium is a perovskite quantum dot; and Amorphous glass used to protect quantum dots for chemical stability. The light amplifying material comprises the raw material composition of following molar ratio: B 2 o 3 : SiO 2 :ZnO:Al 2 o 3 : Cs 2 CO 3 : PbBr: NaBr = (30-50): (30-40): (5-10): (1-10): (1-10): (10-20): (10-20). After mixing the required raw materials, put them in a closed alumina crucible, let the raw materials volatilize into a gas phase at high temperature, pour them on a stainless steel plate for rapid cooling, and then form them. The preparation method of the invention is simple, has good application prospect of two-photon light amplification, and can be used for wavelength up-conversion, optical data storage, biological imaging and photodynamic therapy.

Description

technical field [0001] The invention relates to the technical field of laser devices, in particular to a multi-photon excited perovskite quantum dot optical amplifier. Background technique [0002] All-inorganic perovskite quantum dots with excellent optoelectronic properties such as low exciton binding energy, high thermal stability, and balanced electron and hole mobility lifetimes, such as AMX 3 Type quantum dots (typically A=Rb + ,Cs + ;M=Ge 2+ ,Sn 2+ ,Pb 2+ ;X=F - , Cl - ,Br - , I - ) have great application prospects in the fields of high-efficiency photovoltaic cells, light-emitting diodes, lasers, and photodetectors. Despite being a huge success in various fields, several issues related to its stability held back AMX 3 applications of quantum dots. Thanks to AMX 3 Type quantum dots have strong intrinsic ionic properties and high surface energy, and will rapidly degrade to their constituent components when in contact with polar solvents and the atmosphere, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16C03C6/06C03B5/16C03C4/12H01S3/17
Inventor 孟宪赓刘阳
Owner QILU UNIV OF TECH
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