CN218724724U - Integrating sphere for quantum efficiency measurement - Google Patents
Integrating sphere for quantum efficiency measurement Download PDFInfo
- Publication number
- CN218724724U CN218724724U CN202222935064.3U CN202222935064U CN218724724U CN 218724724 U CN218724724 U CN 218724724U CN 202222935064 U CN202222935064 U CN 202222935064U CN 218724724 U CN218724724 U CN 218724724U
- Authority
- CN
- China
- Prior art keywords
- integrating sphere
- quantum efficiency
- port
- light
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an integrating sphere for quantum efficiency measurement, integrating sphere are the cavity spheroid that the internal surface comprises even diffuse reflection material, are provided with an excitation light entrance port, at least one main measurement mouth and an auxiliary measurement mouth on the integrating sphere, are provided with the sample mount table in the integrating sphere, main measurement mouth department is provided with a light measuring device, auxiliary measurement mouth department is provided with a transient state light measuring device, and the integrating sphere is inside still to be provided with the screen that blocks the direct light of the main measurement mouth of sample direct projection. The utility model discloses the function is various, except that can measure the quantum efficiency at a certain moment, can also measure the total quantum efficiency of the sample that has the afterglow, obtains the whole luminous quantum efficiency of sample, measures more fast, high-efficient, accurate.
Description
Technical Field
The utility model belongs to the technical field of optical measurement instrument, specifically a quantum efficiency is integrating sphere for measurement.
Background
The integrating sphere is a hollow sphere with the inner wall coated with a uniform diffusion material, is usually used as an optical receiver, can receive the luminous energy of a sample in the whole space, and is a common method for measuring the quantum efficiency by an integrating sphere method. The measured sample is arranged at the center of the integrating sphere, exciting light is utilized to directly or indirectly irradiate the sample, light emitted by the sample in a stimulated mode is received by the integrating sphere and then transmitted to the optical measuring device, and finally the quantum efficiency of the sample is measured. The conventional quantum efficiency measurement integrating sphere has single function, can only measure the quantum efficiency at a certain moment, and cannot measure the total quantum efficiency of a sample with afterglow.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a quantum efficiency is integrating sphere for measurement.
The technical scheme of the utility model as follows:
an integrating sphere for measuring quantum efficiency is a hollow sphere with the inner surface formed by uniform diffuse reflection materials, an exciting light incidence port, at least one main measuring port and an auxiliary measuring port are arranged on the integrating sphere, a sample mounting table is arranged in the integrating sphere, a light measuring device is arranged at the main measuring port, a transient light measuring device is arranged at the auxiliary measuring port, and a shielding screen for shielding direct light of a sample directly irradiating the main measuring port is further arranged in the integrating sphere.
The integrating sphere for measuring quantum efficiency is characterized in that the light measuring device is a spectrometer, a photometer, a colorimeter or a radiometer.
The integrating sphere for measuring the quantum efficiency is characterized in that the front end of the transient light measuring device is provided with an optical attenuator.
The integrating sphere for measuring the quantum efficiency is characterized in that the sample mounting table is a cuvette mounting table.
The integrating sphere for measuring the quantum efficiency is characterized in that the sample mounting table is arranged at the center of the integrating sphere.
According to the integrating sphere for measuring the quantum efficiency, the exciting light incidence port and the main measuring port are respectively arranged on two sides of the integrating sphere and are on the same straight line passing through the center of the integrating sphere.
The auxiliary measuring port is arranged at the middle position between the exciting light incidence port and the main measuring port on the integrating sphere.
The utility model discloses an integrating sphere is used in quantum efficiency measurement, the function is various, except can measuring the quantum efficiency at a certain moment, can also measure the total quantum efficiency of the sample that has the afterglow, obtains the whole luminous quantum efficiency of sample, measures more fast, high-efficient, accurate.
Drawings
Fig. 1 is a schematic structural view of an integrating sphere of the present invention;
in the figure, 1 — main measurement port; 2-a light measuring device; 3-auxiliary measuring port; 4-transient light measuring device; 5-exciting light entrance port; 6, a sample mounting table; 7-screen blocking.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an integrating sphere for quantum efficiency measurement, the integrating sphere is the cavity spheroid that the internal surface comprises even diffuse reflection material, be provided with an excitation light entrance port 5 on the integrating sphere, at least one main measurement mouth 1 and an auxiliary measurement mouth 3, be provided with sample mount table 6 in the integrating sphere, main measurement mouth 1 department is provided with a light measuring device 2, auxiliary measurement mouth 3 department is provided with a transient light measuring device 4, the inside fender screen 7 that still is provided with the direct light that blocks the main measurement mouth of sample direct irradiation. The auxiliary measuring port 3 can receive direct light of the sample.
When the device is used, the auxiliary measuring port 3 is utilized to monitor the luminous state of a sample in real time, and the main measuring port 1 is triggered at the specific moment when the sample emits light to complete measurement. The front end of the transient light measuring device 4 is provided with an optical attenuator. The light measuring device 2 is a spectrometer, photometer, colorimeter or radiometer. The sample mount 6 is a cuvette mount.
The sample mounting stage 6 is disposed at the center of the integrating sphere. The excitation light incident port 5 and the main measurement port 1 are respectively provided on both sides of the integrating sphere and on the same straight line passing through the center of the integrating sphere. The auxiliary measurement port 3 is provided at an intermediate position on the integrating sphere between the excitation-light incident port 5 and the main measurement port 1.
Example 1: the light measuring device 2 is a fast spectrometer (which can measure the spectral distribution at a particular time or time period) and the transient light measuring device 4 is a transient radiometer.
When the device is used, a sample is excited by an excitation light source to emit light, the light measuring device 2 of the main measuring port 1 and the transient light measuring device 4 of the auxiliary measuring port 3 are used for synchronous measurement, the transient light measuring device 4 of the auxiliary measuring port 3 is used for measuring the light emitting waveform of the excited emitted light of the sample, the light measuring device 2 of the main measuring port 1 is used for measuring the light emitting power or spectral radiant flux of the excited emitted light of the sample at a certain moment, and finally the light emitting waveform data measured by the transient light measuring device 4 is combined with the light emitting power or spectral radiant flux measured by the light measuring device 2 to obtain the quantum efficiency of all light emission of the sample.
Example 2: the light measuring device 2 is an integrating radiometer, and the transient light measuring device 4 is a transient radiometer;
when the device is used, a sample is excited by an excitation light source to emit light, the light measuring device 2 of the main measuring port 1 and the transient light measuring device 4 of the auxiliary measuring port 3 are used for synchronous measurement, the transient light measuring device 4 of the auxiliary measuring port 3 is used for measuring the light emitting waveform of the excited emitted light of the sample, the transient light measuring device 4 of the auxiliary measuring port 3 is used for measuring the starting time and the ending time of the excited light of the sample, the light measuring device 2 of the main measuring port 1 is triggered to start integral measurement, the light energy of the sample in the whole process of the excited light is measured by the light measuring device 2 of the main measuring port 1, and the quantum efficiency of the whole luminescence of the sample is obtained
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention are all included within the protection scope of the present invention.
Claims (7)
1. An integrating sphere for measuring quantum efficiency is a hollow sphere with the inner surface formed by uniform diffuse reflection materials and is characterized in that an exciting light incidence port (5), at least one main measuring port (1) and an auxiliary measuring port (3) are arranged on the integrating sphere, a sample mounting table (6) is arranged in the integrating sphere, a light measuring device (2) is arranged at the main measuring port (1), a transient light measuring device (4) is arranged at the auxiliary measuring port (3), and a shielding screen (7) for shielding direct light of a sample which directly irradiates the main measuring port is further arranged in the integrating sphere.
2. An integrating sphere for quantum efficiency measurement according to claim 1, characterized in that the light measuring device (2) is a spectrometer, a photometer, a colorimeter or a radiometer.
3. An integrating sphere for quantum efficiency measurement as claimed in claim 1, wherein an optical attenuator is installed at the front end of the transient light measuring device (4).
4. An integrating sphere for quantum efficiency measurement according to claim 1, wherein the sample mount (6) is a cuvette mount.
5. An integrating sphere for quantum efficiency measurement according to claim 1, wherein the sample mount (6) is disposed at the center of the integrating sphere.
6. An integrating sphere for quantum efficiency measurement according to claim 1, wherein the excitation light entrance port (5) and the main measurement port (1) are respectively provided on both sides of the integrating sphere on the same straight line passing through the center of the integrating sphere.
7. An integrating sphere for quantum efficiency measurement according to claim 6, wherein the auxiliary measuring port (3) is provided at an intermediate position on the integrating sphere between the excitation light incident port (5) and the main measuring port (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222935064.3U CN218724724U (en) | 2022-11-04 | 2022-11-04 | Integrating sphere for quantum efficiency measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222935064.3U CN218724724U (en) | 2022-11-04 | 2022-11-04 | Integrating sphere for quantum efficiency measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218724724U true CN218724724U (en) | 2023-03-24 |
Family
ID=85604037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222935064.3U Active CN218724724U (en) | 2022-11-04 | 2022-11-04 | Integrating sphere for quantum efficiency measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218724724U (en) |
-
2022
- 2022-11-04 CN CN202222935064.3U patent/CN218724724U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yamazaki et al. | Microchannel‐plate photomultiplier applicability to the time‐correlated photon‐counting method | |
| Singh et al. | Stimulated-emission cross section and fluorescent quantum efficiency of Nd 3+ in yttrium aluminum garnet at room temperature | |
| Winefordner et al. | Determination of Zinc, Cadmium, and Mercury by Atomic Fluorescence Flame Spectormetry. | |
| CN103308499B (en) | A kind of blue-ray LED excitated fluorescent powder performance testing device and method of testing | |
| CN101430278A (en) | Apparatus for measuring luminous efficiency of photoluminescent body | |
| CN109283447B (en) | Photomultiplier tube linearity measuring method | |
| JP2009008509A (en) | Light emission quantum efficiency measuring device | |
| JP4418731B2 (en) | Photoluminescence quantum yield measurement method and apparatus used therefor | |
| CN103323438A (en) | Measuring method of practical light-emitting performance of fluorescent powder | |
| CN101523197B (en) | System and method of compensating for system delay in analyte analyzation | |
| CN218724724U (en) | Integrating sphere for quantum efficiency measurement | |
| CN209962078U (en) | Projection light source capable of solving laser speckle | |
| CN101191770B (en) | Luminous diode fluorescent powder emission spectrometry process | |
| JP2004177247A (en) | Method of measuring carbon dioxide | |
| CN209014458U (en) | A kind of integrating sphere photodetector and optical measuring system | |
| CN207198042U (en) | LD excites the test device of long-distance fluorescent powder in a kind of integrating sphere | |
| JP3611015B2 (en) | Method and apparatus for measuring optical properties of phosphor sample | |
| JP2823275B2 (en) | External quantum efficiency measurement method for light source | |
| CN112304907B (en) | Method, system, apparatus and medium for determining photoluminescence quantum yield | |
| JP2006242733A (en) | Emission characteristic evaluating method of fluorescent substance | |
| CN207250921U (en) | Laser excitation equipment | |
| CN207610982U (en) | A kind of dual-purpose spectrometer of fluorescent UV | |
| CN207751877U (en) | Effective UV excites fluorescence measuring device | |
| CN111077122A (en) | Quantum dot temperature detection device | |
| CN207908140U (en) | The test device of LD excitations long-distance fluorescent powder in a kind of integrating sphere |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |