A high-efficiency perovskite photonic crystal laser

A photonic crystal, photonic crystal microcavity technology, applied in the field of nano-laser

Active Publication Date: 2022-02-08
TAIYUAN UNIV OF TECH
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Problems solved by technology

However, the laser is realized in a low-temperature (liquid nitrogen) environment, and the single-layer WSe used in the experiment 2 The highest quantum yield of gain materials is close to 60%, and there are still great challenges in realizing high-energy-efficiency lasers

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  • A high-efficiency perovskite photonic crystal laser
  • A high-efficiency perovskite photonic crystal laser
  • A high-efficiency perovskite photonic crystal laser

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Embodiment example

[0020] Implementation case: This example uses CH 3 NH 3 PB 3 Nanosheets are taken as an example for further explanation. TiO 2 The specific process of preparing the photonic crystal resonator is as follows: first, the photonic crystal nano-resonator mold is prepared on the silicon substrate by electron beam etching. The microstructural parameters of the mold are as follows: the lattice constant a is 300 nm, and the air hole radius is 100 nm, the air holes near both ends of the defect move 36 nm outward to both ends, the pore diameter is reduced to 60 nm, the radius of the air holes on the upper and lower sides of the defect is 70 nm, and the depth is 200 nm. Then the PDMS anti-template was prepared by pouring and demoulding. Then the TiO needed for the experiment was prepared by nanoimprinting technique. 2 Photonic crystal air thin film, the specific process is: Spin coating TiO on the PDMS counter template 2 The precursor solution, after the solvent is evaporated by hea...

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Abstract

The invention belongs to the field of nanometer lasers, in particular to a high-energy-efficiency perovskite photonic crystal laser. A high-energy-efficiency perovskite photonic crystal laser, the glass substrate (5) is coated with a polymer layer (4), and the polymer layer (4) is TiO 2 Photonic crystal microcavity layer (2), TiO 2 The photonic crystal microcavity layer (2) is lead halide perovskite nanosheet (1), TiO 2 The photonic crystal microcavity layer (2) is TiO with a linear triple hole defect nanoresonator (6) 2 A photonic crystal with a triangular lattice of air holes embedded in the material, the radius of the air hole is 100 nm, the lattice constant a of the photonic crystal layer is 300 nm, and the air holes adjacent to the left and right ends of the defect move 36 nm outward to form a defect Defect holes (7) at the left and right ends.

Description

technical field [0001] The invention belongs to the field of nanometer lasers, in particular to a high-energy-efficiency perovskite photonic crystal laser with "volume energy efficiency". Background technique [0002] Nanolaser is one of the current hot spots in laser research and application. In addition to being able to integrate photonic systems, integrated detection solutions, and coherent light sources for flexible displays in chip manufacturers, it is also very attractive in the research of basic exciton polarization element physics. . [0003] The challenge of "volume and energy efficiency" in the field of nanolasers, that is, to further reduce the volume and improve energy efficiency, can be solved by resonant cavity design and gain medium optimization. According to the cavity quantum electrodynamics theory, when the volume V of the nanoresonator is as small as the cubic order of the light wavelength, and the quality factor Q of the resonator is large enough, the ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08H01S3/16B82Y20/00B82Y40/00
CPCH01S3/08H01S3/0804H01S3/08059H01S3/1645B82Y40/00B82Y20/00
Inventor 李国辉周博林崔艳霞
Owner TAIYUAN UNIV OF TECH
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