CN213633177U - Electroluminescent service life detection system - Google Patents
Electroluminescent service life detection system Download PDFInfo
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- CN213633177U CN213633177U CN202022697815.3U CN202022697815U CN213633177U CN 213633177 U CN213633177 U CN 213633177U CN 202022697815 U CN202022697815 U CN 202022697815U CN 213633177 U CN213633177 U CN 213633177U
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Abstract
The utility model discloses an electroluminescent life detection system, which relates to the technical field of fluorescence, and comprises an inverted optical microscope, wherein an objective lens is arranged under a sample stage of the inverted optical microscope, a sample for fluorescence detection is fixedly arranged on the sample stage corresponding to the objective lens, and electric fields are applied to two ends of the sample; a total reflection mirror is arranged right below the objective lens; one side of the inverted optical microscope is provided with a light-blocking shell, and a focusing lens, an adjustable pinhole, a beam expander and an optical detector are arranged in the shell. The utility model discloses come research sample attribute from electric energy-light energy angle, through the amplitude of accurate control voltage, control voltage forms fixed interval's accurate pulse sequence to can carry out the plastic to voltage pulse, in order to reach from time and energy density two dimension accurate excitation samples, more accurate carries out the quantitative measurement to electroluminescence, thereby obtains fluorescence life-span value.
Description
Technical Field
The utility model relates to a fluorescence technology field especially relates to an electroluminescent life-span detection system.
Background
The fluorescence emitted by the object contains various photophysical properties. For example, the uniformity of a single-molecule coating film, the photoelectric conversion and storage efficiency of a photovoltaic solar cell material, the energy transfer between molecules, the configuration of macromolecular protein, the material transfer characteristic in cells and the like are judged. Can be effectively quantified and calibrated by measuring the fluorescence lifetime of the fluorescent material. Fluorescence is used as light energy and is converted from other energy in the same or different forms, the common form is that the light energy is converted with each other, the sample is stimulated by the short-wavelength light energy with higher energy, and the sample emits the long-wavelength fluorescence with lower energy through energy level transition and internal energy conversion mechanisms, and the experimental mode is common at present. In addition, there are many emerging experimental forms, such as the electric energy excitation mode proposed in this patent, in which a suitable voltage is applied across a specific region of a sample, and the sample absorbs electric energy and then converts it into light energy to be emitted in the form of fluorescence. The fluorescence lifetime value (typically in the nanosecond dimension) is derived by precisely synchronizing the time period over which the voltage is applied and then efficiently detecting the emitted fluorescence.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of relevant product among the prior art, the utility model provides an electroluminescent life-span detection system detects the fluorescence life-span parameter in fluorescence self attribute, can realize the electroluminescent life-span formation of image in the micro region, life-span fitting analysis's experimental measurement.
The utility model provides an electroluminescent life-span detection system, include: the system comprises an inverted optical microscope, wherein an objective lens is arranged under a sample stage of the inverted optical microscope, a sample for fluorescence detection is fixedly placed on the sample stage corresponding to the position of the objective lens, and electric fields are applied to two ends of the sample; a total reflection mirror is arranged right below the objective lens; one side of the inverted optical microscope is provided with a light-blocking shell, a focusing lens, an adjustable pinhole, a beam expanding lens and an optical detector are arranged in the shell, and the full-reflection lens, the focusing lens, the adjustable pinhole, the beam expanding lens and the optical detector are coaxially arranged in sequence.
In some embodiments of the present invention, an optical filter is further disposed in the optical path between the beam expander and the optical detector.
In some embodiments of the present invention, a polarizer is further disposed in the optical path between the beam expander and the optical detector.
Compared with the prior art, the utility model discloses there is following advantage:
the utility model discloses utilize the electric energy excitation different with the means that common light energy stimulation leads to fluorescence excitation, study the sample attribute from electric energy-light energy angle, through the amplitude of accurate control voltage, control voltage forms fixed interval's accurate pulse sequence to can carry out the plastic to voltage pulse, in order to reach from time and two dimension of energy density accurate excitation samples, more accurate carry out quantitative measurement to electroluminescence, thereby obtain fluorescence life-span value.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electroluminescent lifetime detection system according to the present invention.
Description of reference numerals:
1. inverting the optical microscope; 2. a sample; 3. an objective lens; 4. a total reflection mirror; 5. a housing; 6. a focusing mirror; 7. the pinhole can be adjusted; 8. a beam expander; 9. an optical detector.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary of the invention, and that no limitations are intended to the details of construction or design herein shown. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of providing a more thorough understanding of the present disclosure.
Referring to fig. 1, the system for detecting the electroluminescent lifetime comprises an inverted optical microscope 1, wherein an objective lens 3 is arranged under a sample stage of the inverted optical microscope 1, a sample 2 for fluorescence detection is fixedly arranged on the sample stage corresponding to the objective lens 3, and an electric field is applied to two ends of the sample 2; a total reflection mirror 4 is arranged right below the objective lens 3; one side of the inverted optical microscope 1 is provided with a light-blocking shell 5, a focusing lens 6, an adjustable pinhole 7, a beam expander 8 and an optical detector 9 are arranged in the shell 5, and a full-reflecting lens 4, the focusing lens 6, the adjustable pinhole 7, the beam expander 8 and the optical detector 9 are coaxially arranged in sequence.
The embodiment of the utility model provides an in, can also be provided with the light filter in the light path between beam expanding lens 8 and the optical detector 9 for filter the light of different wavelengths.
The embodiment of the utility model provides an in, can also be provided with the polaroid in the light path between beam expanding lens 8 and optical detector 9 for the fluorescence of screening specific polarization, be used for research sample 2 to send out the polarization characteristic of fluorescence.
The embodiment of the utility model provides an electroluminescence life-span detection system adopts electroluminescence in the aspect of fluorescence arouses, as shown in figure 1, and sample 2 places and is fixed in the sample platform of objective 3 top, then applys corresponding electric field at sample 2 both ends, uses the region on the sample 2 of conducting medium accurate control through the electric field. The voltage of the electric field can be accurately adjusted, and meanwhile, the electric field also has the characteristic of periodic application, the ordered pulse period is adjustable, and the pulse width is within nanoseconds, so that the fluorescence lifetime of the luminescence of the sample 2 can be measured by using time-correlated single photon counting (TCSPC).
In the aspect of fluorescence detection, fluorescence emitted by the sample 2 excited by electric energy passes through the objective lens 3 and is output through the left outlet of the lower-layer optical path of the inverted optical microscope 1 with model IX73, and the fluorescence is collected on the optical detector 9. In order to improve the spatial resolution, a specific sample 2 region is screened out for observation by using the focusing function of the conventional inverted optical microscope 1. We have still set up the pinhole light path of adjustable pinhole 7 in surveying the light path, reach and close to the spatial resolution of diffraction limit, and concrete light path principle is exactly to receive the bundle to the fluorescence on surveying the light path earlier through focusing mirror 6, and the light beam after receiving passes through the pinhole of specific position, and this pinhole further filters fluorescence light beam, reaches higher resolution ratio back, and another supporting beam expander 8 expands the beam again, and fluorescence changes the parallel light back. The parallel light is finally incident on the photosensitive surface of the optical detector 9, and the detection of the fluorescence is completed. In addition, various elements, such as a filter or a polarizing film, can be added in front of the detector for the purpose of wavelength discrimination.
The utility model discloses utilize and arouse with the electric energy that the stimulation of common light energy leads to fluorescence to arouse the means different, study sample 2 attributes from electric energy-light energy angle, at present, this direction should have great application prospect. In particular, in the field related to photovoltaic solar cells, essentially, the most energy type directly used by human beings is electric energy, and in the photovoltaic industry, the conversion between light energy and electric energy is a main subject. The change of material properties under the stimulation of electric energy becomes a research direction with considerable application prospect. The utility model discloses an amplitude of accurate control voltage, control voltage form fixed interval's accurate pulse sequence to can carry out the plastic to voltage pulse, in order to reach from two dimensions of time and energy density accurate excitation sample 2, more accurate carries out quantitative measurement to electroluminescence, thereby derives (generally in the nanosecond dimension) fluorescence life-span value.
Those not described in detail in this specification are within the skill of the art. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.
Claims (3)
1. An electroluminescent lifetime detection system, comprising: the system comprises an inverted optical microscope, wherein an objective lens is arranged under a sample stage of the inverted optical microscope, a sample for fluorescence detection is fixedly placed on the sample stage corresponding to the position of the objective lens, and electric fields are applied to two ends of the sample; a total reflection mirror is arranged right below the objective lens; one side of the inverted optical microscope is provided with a light-blocking shell, a focusing lens, an adjustable pinhole, a beam expanding lens and an optical detector are arranged in the shell, and the full-reflection lens, the focusing lens, the adjustable pinhole, the beam expanding lens and the optical detector are coaxially arranged in sequence.
2. The system of claim 1, wherein: and an optical filter is also arranged in the light path between the beam expander and the optical detector.
3. The system of claim 1, wherein: and a polaroid is also arranged in a light path between the beam expander and the optical detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697815.3U CN213633177U (en) | 2020-11-19 | 2020-11-19 | Electroluminescent service life detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697815.3U CN213633177U (en) | 2020-11-19 | 2020-11-19 | Electroluminescent service life detection system |
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| CN213633177U true CN213633177U (en) | 2021-07-06 |
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| CN202022697815.3U Active CN213633177U (en) | 2020-11-19 | 2020-11-19 | Electroluminescent service life detection system |
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