High-temporal-spatial-resolution multi-modal carrier dynamics measurement system and measurement method

A kinetic measurement, space-time resolution technology, applied in instrumentation, photovoltaic power generation, scanning probe technology, etc., can solve problems such as the inability to meet the requirements at the same time, the inability to achieve measurement, and the inability to provide information on the kinetics of electron-hole pair recombination luminescence. , to achieve great research value and application prospects, rich working modes, and flexible switching effects
CN112379129AActive Publication Date: 2021-02-19付学文
8 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
付学文
Publication Date
2021-02-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a high-temporal-spatial-resolution multi-modal carrier dynamics measurement system and measurement method. The measurement system comprises the steps that a femtosecond laserwhich emits near-infrared femtosecond laser; a wavelength selection light path which selects the wavelength of the near-infrared femtosecond laser; a first spatial light path which is used for exciting the surface of the sample to start an ultrafast carrier dynamic process; a second spatial light path which is used for carrying out ultrafast scanning imaging or excitation on the sample to generatetransient cathode fluorescence; a cathode fluorescence collector which is used for collecting transient cathode fluorescence excited on the surface of the sample; a spectrophotometer which is used for splitting the transient cathode fluorescence collected by the cathode fluorescence collector; an optical CCD which is used for carrying out spectral measurement of time integration on the transientcathode fluorescence split by the light splitting spectrometer; a time-resolved fluorescence detector which is used for measuring the transient cathode fluorescence spectrum split by the light splitting spectrometer; and a scanning electron microscope and scanning electron image detection system which is used for detecting a time-resolved scanning secondary electron image.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a high time-space resolution multi-mode carrier dynamics measurement system and measurement method, and relates to performance characterization of energy carrier dynamics of optoelectronic functional materials (such as nano-semiconductor materials, etc.) and new high-performance optoelectronic devices Develop technical fields. Background technique

[0002] At present, various new low-dimensional optoelectronic functional materials, especially nano-semiconductor materials, are in the ascendant, and corresponding optoelectronic devices have also been widely developed. For most low-dimensional optoelectronic functional materials, the performance of their optoelectronic devices during service mainly depends on the dynamics of their excited state energy carriers, such as the transport, capture, energy Relaxation, recombination luminescence, etc., and most of these dynamic processes occur on the nanosecond to picosecond or even femt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More