CN211928061U - Testing device and system for photoresponse device - Google Patents

Abstract

The utility model relates to the technical field of testing light-responsive devices, and specifically discloses a testing device for light-responsive devices, which comprises: a transient light source device, a collimating light path and a test platform, wherein the collimating light path is arranged on the instantaneous light source. between the transient light source device and the test platform; the transient light source device is used to emit a transient light source that can excite the light response device to be tested; the collimated light path can convert the transient light source emitted by the transient light source device The light spot energy is uniformized; the test platform can correct the outgoing transient light of the collimated optical path, and test the optical response device to be tested according to the corrected transient light to obtain a test signal, and use the test signal sent to the host computer. The utility model also discloses a testing device and a system for the light response device. The testing device of the light-responsive device provided by the utility model has the advantages of low cost and easy use.

Description

A test device and system for a light-responsive device

technical field

The utility model relates to the technical field of testing of light-responsive devices, in particular to a test device of a light-responsive device and a test system of a light-responsive device including the test device of the light-responsive device.

Background technique

Usually, the measurement of the internal dynamic properties of light-responsive devices such as photovoltaic cells is difficult to detect, especially the characterization of characteristic parameters such as bulk impurity defects and recombination center concentration. At present, the commonly used test method is to use chemical corrosion method to corrode from the surface to the inside, and calculate the concentration of defect impurities and recombination center through the change of corrosion ion amount or mass, which is a method that cannot be continuously and repeatedly tested; another The method is to use optical testing for non-contact measurement. This method requires the use of femtosecond-level pulsed lasers. The light intensity and energy are large and the equipment is expensive, so it is not suitable for large-scale promotion and application.

Therefore, how to provide a low-cost and easy-to-use measurement method has become an urgent technical problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The utility model provides a test device for a light response device and a test system for a light response device including the test device for the light response device, which solves the problems of high cost and inconvenient use of the measurement method in the related art.

As a first aspect of the present invention, a test device for a light-responsive device is provided, which includes: a transient light source device, a collimated optical path, and a test platform, wherein the collimated optical path is arranged between the transient light source device and the test platform. between the test platforms;

The transient light source device is used to emit a transient light source capable of exciting the light-responsive device to be tested;

The collimated light path can homogenize the spot energy of the transient light source emitted by the transient light source device;

The test platform can correct the outgoing transient light of the collimated optical path, test the photoresponse device to be tested according to the corrected transient light to obtain a test signal, and send the test signal to the host computer.

Further, the test platform includes a signal acquisition system, a displacement platform and a fixture, the fixture is connected to the signal acquisition system, the fixture and the signal acquisition system are both arranged on the displacement platform, and the displacement platform The position of the transient light on the photo-responsive device to be tested can be adjusted, the fixture can realize the test of the photo-responsive device to be tested, and the signal acquisition system can collect the optical response of the photo-responsive device to be tested. test signal, and send the test signal to the upper computer.

Further, the test platform also includes connection lines, between the signal acquisition system and the fixture, between the light-responsive device to be tested and the fixture, and the light-responsive device to be tested and the signal acquisition The systems are all connected through the connection lines.

Further, the connection line includes a coaxial cable.

Further, the collimating light path includes a diaphragm, a first convex lens and a second convex lens arranged in sequence along the light exit direction.

As another aspect of the present invention, a test system for a light-responsive device is provided, which includes: a host computer and the aforementioned test device for the light-responsive device, the host computer and the test device for the light-responsive device The testbench communication connection in .

The testing device for the photo-responsive device provided by the utility model realizes the detection of photoelectrons by utilizing the process of photoelectric conversion effect, and calculates the intrinsic carrier concentration inside the photo-responsive device by using the change of charge per unit time, and by changing the photo-responsive device The transient current in the circuit calculates the recombination rate inside the device, the utility model simplifies the testing process, repeats the surface scanning measurement for many times, and has the characteristics of low cost, easy use, fast response, accuracy and the like.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the attached image:

FIG. 1 is a schematic structural diagram of a testing device for a light-responsive device provided by the present invention.

FIG. 2 is a schematic structural diagram of a specific embodiment of a testing device for a light-responsive device provided by the present invention.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described implementation The examples are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. . It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

In this embodiment, a test device for a light-responsive device is provided, and FIG. 1 is a schematic structural diagram of the test device for a light-responsive device provided according to an embodiment of the present invention, as shown in FIG. 1 , including:

A transient light source device 1, a collimated light path 2 and a test platform 3, the collimated light path 2 is arranged between the transient light source device 1 and the test platform 3;

The transient light source device 1 is used to emit a transient light source capable of exciting the light-responsive device to be tested;

The collimating light path 2 can homogenize the spot energy of the transient light source emitted by the transient light source device;

The test platform 3 can correct the outgoing transient light of the collimated optical path, test the photoresponse device to be tested according to the corrected transient light to obtain a test signal, and send the test signal to the host computer.

The testing device for the photo-responsive device provided by the embodiment of the present utility model realizes the detection of photoelectrons by utilizing the process of photoelectric conversion effect, and calculates the intrinsic carrier concentration inside the photo-responsive device by using the change of charge per unit time. The recombination rate inside the device is calculated in response to the transient current of the device in the circuit, the utility model simplifies the testing process, repeats the surface scan measurement for many times, and has the characteristics of low cost, easy use, fast response and accuracy.

Preferably, the transient light source device 1 includes a laser.

Specifically, as shown in FIGS. 1 and 2 , the test platform 3 includes a signal acquisition system 6 , a displacement platform 8 and a fixture 4 , the fixture 4 is connected to the signal acquisition system 6 , and the fixture 4 and the The signal acquisition systems 6 are all arranged on the displacement platform 8, and the displacement platform 8 can adjust the position of the transient light on the light response device to be tested, and the fixture 4 can realize the detection of the light to be tested. In response to the test of the device, the signal acquisition system 6 can collect the test signal of the light-responsive device to be tested, and send the test signal to the host computer.

It should be noted that, the fixture 4 can specifically use a perovskite solar cell efficiency test fixture described in the patent document with the patent number of ZL201821591722.9.

Preferably, the signal acquisition system 6 may specifically include an oscilloscope.

Preferably, the displacement platform 8 includes an X-Y-Z displacement platform.

Specifically, as shown in FIG. 1 and FIG. 2 , the test platform 3 further includes a connection line 5 between the signal acquisition system and the fixture, between the light-responsive device to be tested and the fixture and all The optical response device to be tested and the signal acquisition system are all connected through the connection line.

Preferably, the connection line includes a coaxial cable.

Preferably, the collimating light path 2 includes a diaphragm, a first convex lens and a second convex lens arranged in sequence along the light exit direction.

In the testing device of the light response device provided by the embodiment of the present invention, the transient light source device 1 can emit a pulsed light source with an emission pulse time in the order of nanoseconds to microseconds; Straight and make the spot energy uniform; the test platform 3 and the fixture 4 correct the energy of the outgoing optical path and connect the test sample to the detection loop; the connection line 5 connects the laser current of the light-responsive sample into the signal acquisition system 6 ; The test signal is transmitted to the upper computer by the signal acquisition system 6 to collect and record.

As another embodiment of the present invention, a test system for a light-responsive device is provided, which includes: a host computer and the above-mentioned test device for the light-responsive device, and a test system between the host computer and the light-responsive device Test platform communication connection in the device.

The test system of the photo-responsive device provided by the embodiment of the present invention adopts the test device of the photo-responsive device mentioned above, realizes the detection of photoelectrons by the process of photoelectric conversion effect, and calculates the photo-responsive device by using the change of charge per unit time. The internal intrinsic carrier concentration is calculated by changing the transient current of the photoresponse device in the circuit to calculate the recombination rate inside the device. Use, fast response, accurate and other characteristics.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (6)

1. a test device for a light-responsive device, comprising: a transient light source device, a collimated light path and a test platform, and the collimated light path is arranged between the transient light source device and the test platform; The transient light source device is used to emit a transient light source capable of exciting the light-responsive device to be tested; The collimated light path can homogenize the spot energy of the transient light source emitted by the transient light source device; The test platform can correct the outgoing transient light of the collimated optical path, test the photoresponse device to be tested according to the corrected transient light to obtain a test signal, and send the test signal to the host computer. 2. The test device of the optical response device according to claim 1, wherein the test platform comprises a signal acquisition system, a displacement platform and a fixture, the fixture is connected with the signal acquisition system, and the fixture and the fixture are connected to the signal acquisition system. The signal acquisition systems are all arranged on the displacement platform, and the displacement platform can adjust the position of the transient light on the optical response device to be tested, and the fixture can realize the detection of the optical response device to be tested. For testing, the signal acquisition system can collect the test signal of the optical response device to be tested, and send the test signal to the host computer. 3 . The test device of the light-responsive device according to claim 2 , wherein the test platform further comprises a connection line, between the signal acquisition system and the fixture, the light-responsive device to be tested and the The connection lines are used to connect the fixtures as well as between the light-responsive device to be tested and the signal acquisition system. 4 . The testing device for a light-responsive device according to claim 3 , wherein the connection line comprises a coaxial cable. 5 . 5 . The testing device for a light-responsive device according to claim 1 , wherein the collimated optical path comprises a diaphragm, a first convex lens and a second convex lens arranged in sequence along the light exit direction. 6 . 6. A test system for a light-responsive device, comprising: a host computer and a test device for the light-responsive device according to any one of claims 1 to 5, the host computer and the light-responsive device A test platform communication connection in a test setup.

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