CN219532925U - High-resolution fluorescence detection equipment suitable for semitransparent sample to be detected - Google Patents

Abstract

The utility model provides high-resolution fluorescence detection equipment suitable for semitransparent samples to be detected, which comprises a microscope body, wherein the microscope body comprises a lens barrel, an object lens barrel and an electric objective table positioned at the lower part of the object lens barrel, and the object lens barrel of the microscope body is sequentially provided with a first lens and a long-pass filter; a CCD camera is arranged on the eye lens barrel; the utility model discloses a fluorescence detection device, which comprises an electric object stage, a light source, a short-pass filter, a collimator, a second lens, a CCD camera, a microscope, a PL and a microscope, wherein the light source is replaced by the conventional microscope, the light source is assisted by the light filter, the CCD camera is combined with the microscope for collecting excitation light, the fluorescence image scanning is carried out on a photovoltaic module by combining the PL and the microscope, and the fluorescence intensity of a sample can be accurately detected.

Description

High-resolution fluorescence detection equipment suitable for semitransparent sample to be detected

Technical Field

The utility model relates to the field of photovoltaic product detection, in particular to high-resolution fluorescence detection equipment suitable for semitransparent samples to be detected.

Background

The Photoluminescence (PL) detection has the advantages of no contact, non-destructiveness and the like as an optical detection, can intuitively display the non-radiative recombination occurrence probability and the transmission efficiency of carriers in the photovoltaic module, and is an ideal photovoltaic module detection means. The microscope can observe the surface high-resolution morphology simply and intuitively under the condition of not contacting perovskite. By combining the two, the characteristics of component carrier recombination and transmission, the distribution position of a recombination center and the like can be displayed while the high-resolution morphology is observed.

The current common photoluminescence detection method is mainly used for measuring specific point positions of a sample, which can cause the phenomenon that the fluorescence intensities of different test points of the same sample are different, so that the reliability of a test result is reduced. Meanwhile, the measurement mode of point luminescence cannot reflect the overall view of the luminous intensity of the surface of the sample, and the research progress can be greatly slowed down.

Disclosure of Invention

In order to solve the technical problems, the utility model provides high-resolution fluorescence detection equipment suitable for semitransparent samples to be detected, which comprises a microscope body, wherein the microscope body comprises a lens barrel, an object lens barrel and an electric objective table positioned at the lower part of the object lens barrel, and the object lens barrel of the microscope body is sequentially provided with a first lens and a long-pass filter;

a CCD camera is arranged on the eye lens barrel;

the electric objective table is characterized in that an excitation light source is arranged at the lower part of the electric objective table, a short-pass filter is arranged at the upper part of the excitation light source, a collimator is arranged at the upper part of the short-pass filter, and a second lens is arranged between the collimator and the electric objective table.

The object lens barrel is provided with a support in a clamping mode, the support is provided with a profiling hole, the profiling hole is arranged in the profiling hole in a clamping mode with the object lens barrel, the lower portion of the support is connected with an optical filter fixing plate through at least two threaded fixing columns, the optical filter fixing plate is provided with a round groove corresponding to the profiling hole, and the long-pass optical filter is arranged in the round groove.

Preferably, the lower part of the electric object stage is connected with a lens carrier plate through a screw thread fixing column, a lens cavity is arranged on the lens carrier plate, and a second lens is arranged in the lens cavity.

Preferably, the center of the electric object stage is made of transparent materials.

Preferably, the excitation light source is an LED light source or a laser light source.

The high-resolution fluorescence detection device suitable for the semitransparent sample to be detected has the following beneficial effects: according to the utility model, the conventional microscope light source is replaced by the LED or the laser light source and is assisted by the optical filter, the ccd camera and the microscope for collecting the excitation light are combined, and the PL and the microscope are combined to scan the fluorescent image of the photovoltaic module, so that the distribution of the fluorescent intensity of the sample in the sample can be detected with high precision, and meanwhile, the characteristics of the component carrier recombination and transmission, the distribution position of the recombination center and the like are displayed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic side view of the present utility model;

fig. 2 is a schematic diagram illustrating an installation of an objective lens barrel and a first lens of the present utility model;

FIG. 3 is a schematic diagram of the mounting of the motorized stage and the second lens of the present utility model;

FIG. 4 is a schematic diagram of an excitation light source according to the present utility model;

1, a microscope body; 2. a eyepiece barrel; 3. an object lens barrel; 4. an electric stage; 5. a first lens; 6. a long-pass filter; 7. a CCD camera; 8. an excitation light source; 9. a short-pass filter; 10. a collimator; 11. a second lens; 12. a sample; 13. a bracket; 14. a filter fixing plate; 15. a thread fixing column; 16. a lens carrier plate; 17. a lens cavity.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 and fig. 2, the utility model provides a high-resolution fluorescence detection device suitable for semitransparent samples to be detected, which comprises a microscope body 1, wherein the microscope is an existing fluorescence microscope, the microscope body 1 comprises a lens barrel 2, an objective lens barrel 3 and an electric object table 4 positioned at the lower part of the objective lens barrel 3, the electric object table 4 can adjust the angle between a sample 12 and excitation light so as to adjust the sample 12 and move the sample 12 to observe the high-resolution overall view of the sample 12, the structure of the microscope is a purchase part in the prior art, and the structure of the microscope is not further described in the utility model, the design of the utility model is that a first lens 5 and a long-pass filter 6 are sequentially arranged on the objective lens barrel 3 of the microscope body 1, the first lens 5 is used for amplifying the sample 12, the objective lens barrel 2 is provided with a CCD camera 7, and the CCD camera 7 is responsible for photographing to obtain fluorescence images; the long-pass filter 6 filters out stray light below the fluorescence wavelength of the component and visible light to ensure that the light-emitting part of the component is captured by a camera and a microscope

The specific connection mode of the first lens 5 and the objective lens barrel 3 is as follows: the lens barrel 3 is provided with a support 13 in a clamping manner, the support 13 is provided with a profiling hole, the profiling hole is arranged in a clamping manner with the lens barrel 3, namely, the support 13 can be clamped at the end part of the lens barrel 3, the first lens 5 is arranged in the profiling hole, the lower part of the support 13 is connected with an optical filter fixing plate 14 through at least two thread fixing columns 15, the optical filter fixing plate 14 is provided with a circular groove corresponding to the profiling hole, the long-pass optical filter 6 is arranged in the circular groove, and the long-pass optical filter 6 and the first lens 5 are arranged in a superposition manner.

The electric stage 4 is provided with an excitation light source 8 at the lower part, the excitation light source 8 is fixed on the base, a shell is arranged outside the excitation light source 8, an opening is arranged at the top of the shell, a short-pass filter 9 is arranged in the shell and points to the stage at the upper part, the excitation light source in the embodiment can be an LED light source, the LED light source has lower cost, when other wavelength light sources are needed, lasers with different wave bands can be selected as the light source, the excitation light source 8 is used for generating light with the wavelength of 300-1200nm, light with a specific wave band is generated by the excitation light source, a proper wave band is selected according to specific photovoltaic module materials, and the short-pass filter 9 is used for filtering stray light with the wavelength above the light source.

The upper part of the short-pass filter 9 is provided with a collimator 10, and the collimator 10 is used for converting the light with a specific wave band emitted by the excitation light source 8 into parallel collimated light beams.

A second lens 11 is arranged between the collimator 10 and the electric stage 4, the second lens 11 being operative to focus the collimated parallel light beam to a point. Wherein, to be explained is: the lower part of the electric object stage 4 is connected with a lens carrier plate 16 through a thread fixing column 15, a lens cavity 17 is arranged on the lens carrier plate 16, a second lens 11 is arranged in the lens cavity 17, a through hole is formed in the center of the lens cavity 17, the second lens 11 is stably placed in the lens cavity 17 so as to realize that the second lens 11 is arranged at the lower part of the electric object stage 4, the center of the electric object stage 4 is made of a transparent material, so that an excitation light source 8 penetrates and excites a sample 12 on the object stage, the sample 12 in the embodiment can be a perovskite solar cell, a series of semiconductor devices with the functions of absorbing excitation light and emitting fluorescence, such as an organic solar cell, a silicon solar cell and the like, and can also be semi-finished devices, such as a perovskite battery, can be tested when a second three-layer film is prepared.

When the device is used, the sample 12 is placed on the angle-variable object stage and fixed, the camera is turned on, the microscope is used for adjusting the definition of the sample 12, the light of a room where the device is located is turned off, the state of a darkroom is simulated, the excitation light source 8 is turned on, the camera is turned on for exposure, the proper wavelength is selected, after the exposure time is fixed, the camera is turned off for exposure, the light source is turned off, the sample 12 is moved to the next detection position (one body position distance of the light source is moved each time), and the excitation light source 8 and the subsequent steps are repeatedly turned on until the whole photovoltaic module is detected. Finally, a high-resolution fluorescence image of the whole sample is obtained, and meanwhile, the characteristics of carrier recombination and transmission at all positions of the assembly, the distribution position of a recombination center and the like are displayed.

Claims (5)

1. The high-resolution fluorescence detection device suitable for the semitransparent sample to be detected comprises a microscope body, wherein the microscope body comprises a lens barrel, an object lens barrel and an electric object stage positioned at the lower part of the object lens barrel, and is characterized in that a first lens and a long-pass filter are sequentially arranged on the object lens barrel of the microscope body;

a CCD camera is arranged on the eye lens barrel;

the electric objective table is characterized in that an excitation light source is arranged at the lower part of the electric objective table, a short-pass filter is arranged at the upper part of the excitation light source, a collimator is arranged at the upper part of the short-pass filter, and a second lens is arranged between the collimator and the electric objective table.

2. The high-resolution fluorescence detection device suitable for semitransparent samples to be detected according to claim 1, wherein a bracket is clamped on the object lens barrel, a profiling hole is arranged on the bracket, the profiling hole and the object lens barrel are clamped and arranged, the first lens is arranged in the profiling hole, the lower part of the bracket is connected with a light filter fixing plate through at least two thread fixing columns, a circular groove corresponding to the profiling hole is arranged on the light filter fixing plate, and the long-pass light filter is arranged in the circular groove.

3. The high-resolution fluorescence detection device for semitransparent samples to be detected according to claim 1, wherein the lower part of the electric stage is connected with a lens carrier plate through a threaded fixing column, a lens cavity is arranged on the lens carrier plate, and a second lens is arranged in the lens cavity.

4. The high resolution fluorescence detection device for a translucent test sample according to claim 1, wherein the motorized stage center is a transparent material.

5. The high-resolution fluorescence detection device for a semitransparent sample to be detected according to claim 1, wherein the excitation light source is an LED light source or a laser light source.