CN1300597C - Integrated assayer for photoelectric performance - Google Patents

Abstract

The photoelectric performance comprehensive test device is a device for measuring the photoelectric performance of photoelectric conversion materials and devices. In this device, the xenon lamp light source (1) is used as a simulated solar light source, and the grating monochromator (3) and the xenon lamp light source (1) are guided by an optical fiber. Light beam (21) links to each other, and grating monochromator (3) links to each other with test obscura (5) with optical fiber guide beam (22); Photocell (51), photometer sensor (52), photocell ( The output terminal of 51) is connected to the voltage/ammeter (4), the output terminal of the photometer sensor (52) is connected to the photometer host (7), and the output terminals of the photometer host (7) and the voltage/ammeter (4) pass through the data acquisition interface It is connected with the computer (6) to measure the light intensity irradiated on the photocell (51) in situ. Be provided with test platform (53) in test dark box (5), be provided with photocell (51), photometer sensor (52) on test platform (53), photometer sensor (52) is placed in test dark box (5) The location of the photocell (51).

Description

The photoelectric properties comprehensive test device

Technical field

The present invention is a kind of device of measuring the photoelectric properties of photoelectric conversion material and device, especially a kind of testing tool of Optical Electro-Chemistry solar cell photoelectric conversion performance.

Background technology

The photoelectric characteristic of testing photoelectronic transition material and device (as photoelectric cell) has two electrodes and three-electrode method, and is comparatively commonly used with two electrode methods.What be seen in report is the discrete device that some research institutions assemble voluntarily.Shine on the photoelectric cell with pulsed xenon (Xe) lamp simulated solar light source, compare, obtain photronic performance parameter by the electric current and voltage data and the photronic measurement data of standard of measurement photoelectric cells under the analog light source irradiation.Whole process automation degree is lower, and the contrast of the collection of monochromatic adjusting, data, the processing of data, performance parameter etc. all can not computer control, and experimental data repeated relatively poor can not fully satisfy the needs of research.

Since the utilization of sun power to alleviating energy crisis, alleviate environmental pollution crucial meaning arranged, people more and more pay attention to the research of photoelectric conversion material and device.Efficiently and exactly measure the research and development that photronic characteristic helps to promote solar cell with incorporate photoelectric cell photoelectric properties proving installation.

By computer-controlled monochromator or bandpass filter, can obtain the monochromatic light of continuous required various wavelength; High-precision digital voltage reometer is used to measure the electric current and voltage data under photronic open-circuit voltage and short-circuit current and the different loads characteristic, computing machine is by the data acquisition interface image data, by calculating parameters such as photoelectric cell quantum efficiency, photoelectric transformation efficiency; Work out automatic process of measurement test process can be adjusted and measure automatically, significantly reduce the time of artificial adjustment, improve the efficient of measuring.

Summary of the invention

Technical matters: the integrated photoelectric properties comprehensive test device that the purpose of this invention is to provide a kind of photoelectric conversion material and device, can adjust automatically, measurement and data processing, it is low to solve present such unit efficiency, and measuring accuracy is low, the shortcoming of poor reproducibility.

Technical scheme: electrical property comprehensive test device of the present invention, comprise light source, sample chamber, test section, control section, xenon source is as the simulated solar light source in this device, with optical fiber light-guiding Shu Xianglian, grating monochromator and test camera bellows are with optical fiber light-guiding Shu Xianglian between grating monochromator and xenon source; Be provided with photoelectric cell, photometer sensor in the test camera bellows, photronic output termination voltage/current table, the output termination photometer main frame of photometer sensor, the output terminal of photometer main frame, voltage/current table joins by data acquisition interface and computing machine, and in site measurement is radiated at the light intensity on the photoelectric cell.

In the test camera bellows, be provided with test platform, on test platform, be provided with photoelectric cell, photometer sensor, the entrance pupil that the optical fiber light-guiding bundle passes on the test chamber wall is introduced photoelectric cell with light, photoelectric cell the two poles of the earth are connected by lead and voltage/current epiphase, and the photometer sensor places the photronic position of test camera bellows; Photometer sensor and photometer main frame join.Xenon source adopts monochromatic light and white light simultaneously.The interface of optical fiber light-guiding bundle is the rectangle optical fiber interface, makes the incident light and the more effective coupling of outgoing luminous energy of grating monochromator.

The power of high-power xenon (Xe) lamp can be regulated by stabilized current supply; Use optical fiber light-guiding, monochromator or bandpass filter can obtain the monochromatic light of continuous required various wavelength by computer control; The test camera bellows is the iron casing of 50cm * 50cm * 50cm, must be airtight lighttight, and the temperature in the casing can be controlled between room temperature～80 ℃, and parts such as test platform, sample cell, photometer sensor are arranged in the casing; Photometer is demarcated through national measurement standard unit, sensing range 200nm～1100nm; Electric current and voltage data under the open-circuit voltage of high-precision digital voltage reometer measurement photoelectric cells and short-circuit current and the different loads characteristic can measure millivolt and microampere order; The electric current and voltage data are write down and are preserved by computer-automatic collection; Self-compiling program comprises the automatic control to monochromator, and whole test process is provided with computing with image data automatically.

The course of work of this proving installation is: opening power, regulate the working current of high-power xenon (Xe) lamp, provide the simulated solar light source of certain intensity, through low pass concave mirror reflection elimination wavelength is infrared light more than the 1200nm, import monochromator, open the computer testing interface, the input service condition, monochromatic wavelength or scan mode are set, under computer control, monochromator provides monochromatic light with certain wavelength or scans, monochromatic light is introduced the test camera bellows through optical fiber and is shone (when surveying the photoelectric properties under the simulated solar irradiation, without monochromator) on the photoelectric cell, the conversion that produces luminous energy-electric energy, electric current and voltage data under photronic open-circuit voltage and short-circuit current and the different loads characteristic are measured by high-precision digital voltage reometer, the light intensity that is radiated at the photoelectric cell surface is measured by light power meter, and all measurement data are write down and preserved by computer-automatic collection, after overcorrect, calculate quantum efficiency, fill factor, curve factor, performance parameters such as photoelectric transformation efficiency.Computing formula is:

$\mathrm{IPCE}=\frac{1243\×I_{\mathrm{SC}}\×100\%}{\mathrm{\λ}\×P_{\mathrm{in}}}---\left(1\right)$

$\mathrm{FF}=\frac{I_{\mathrm{Ph}\left(\max \right)}\×V_{\mathrm{Ph}\left(\max \right)}}{I_{\mathrm{SC}}\×V_{\mathrm{OC}}}---\left(2\right)$

$\mathrm{\η}=\frac{I_{\mathrm{SC}}\×V_{\mathrm{OC}}\×\mathrm{FF}}{P_{\mathrm{in}}}---\left(3\right)$

In the formula: IPCE, FF, η are respectively quantum efficiency, fill factor, curve factor, photoelectric transformation efficiency; λ, P _InBe respectively incident light wavelength and luminous power; I _SC, V _OCBe respectively photronic short-circuit current and open-circuit voltage; I _{Ph (max)}, V _{Ph (max)}Be respectively photocurrent and the photovoltage of photoelectric cell when under loading condition is arranged, obtaining peak power output.

Beneficial effect:

1. use the adjustable light source of current stabilization, the light intensity that makes illumination intensity of light source can regulate, shine the photoelectric cell surface is stablized.

2. adopt the autoscan of monochromatic light frequency, the automatic record and the processing of measuring-signal, realized the automatic test of photoelectric cell performance.

3. test speed is fast, can realize the mensuration of monochromatic scanning of 200-800nm and quantum efficiency in 1 minute.

4. test result favorable reproducibility, the instrument system error is less than 2%.

5. the self-bias program is moved under windows, and the interface is Chinese, and is simple to operate.

6. all components is homemade.

7. a tractor serves several purposes can also be used for the test of aspects such as photocatalysis, photoconduction.

Description of drawings

Fig. 1 is a photoelectric properties comprehensive tester block diagram of the present invention.

Fig. 2 is the structural representation of test camera bellows 5 among the present invention.

Among the above figure xenon source 1 is arranged; Optical fiber light-guiding bundle 21,22; Grating monochromator 3; Voltage/current table 4; Test camera bellows 5; Photoelectric cell 51; Photometer sensor 52; Test platform 53; Entrance pupil 54; Computing machine 6; Photometer main frame 7.

Embodiment

The present invention is a kind of device of measuring the photoelectric properties of photoelectric conversion material and device, comprises light source, sample chamber, detection system, control system etc.Xenon source 1 is as the simulated solar light source in this device, and 1 of grating monochromator 3 and xenon source link to each other with optical fiber light-guiding bundle 21, grating monochromator 3 with test camera bellows 5 and link to each other with optical fiber light-guiding bundle 22; Be provided with photoelectric cell 51, photometer sensor 52 in the test camera bellows 5, the output termination voltage/current table 4 of photoelectric cell 51, the output termination photometer main frame 7 of photometer sensor 52, the output terminal of photometer main frame 7, voltage/current table 4 joins by data acquisition interface and computing machine 6, and in site measurement is radiated at the light intensity on the photoelectric cell 51.In test camera bellows 5, be provided with test platform 53, on test platform 53, be provided with photoelectric cell 51, photometer sensor 52, the entrance pupil 54 that optical fiber light-guiding bundle 22 passes on test camera bellows 5 walls is introduced photoelectric cell 51 with light, photoelectric cell 51 the two poles of the earth are linked to each other with voltage/current table 4 by lead, and photometer sensor 52 places the position of test camera bellows 5 photoelectric cells 51; Photometer sensor 52 joins with photometer main frame 7.Xenon source 1 adopts monochromatic light and white light simultaneously.Photometer, voltage galvanometer join by data acquisition interface and computing machine, under the windows system, compilation operation and data processor are realized test automation.

Manufacture process is:

1, the power of xenon lamp is not less than 1500W, and working current is adjustable, and heat abstractor is arranged.The light that sends is through the reflection of the concave mirror of low pass, filtering behind the most infrared light, focus on resistant to elevated temperatures optical fiber light-guiding Shu Yiduan.

2, grating monochromator to advance light and bright dipping end and optical fiber supporting, and by the computer controlled automatic output light wavelength, the output wavelength scope is 200～1500nm, wavelength control precision 0.1nm.

3, the size of test camera bellows decide according to test request, makes with cold-rolled steel sheet, and is inner roasting black, seals light tightly, and interlayer is thermofin with asbestos between inside and outside wall, employing PID temperature control system, and the temperature inside the box can be from room temperature to 80 ℃ thermostatic control.

4, intensity of illumination adopts through the intelligent light power meter of demarcating and measures, have the GPIB control interface, can be by the monochromatic light intensity of computer automatic analysis from monochromator incident, spectral response range is 400nm～1100nm, measurement range is 1nW～1.000mW, and photosensitive area is 2.00mm ²

5, high accuracy number volometer voltage range be 0～± 12000.0mV, input impedance:＞10M Ω, non-linear＜± 0.002%F.S., temperature coefficient＜2ppm/ ℃; Current range is 0～± 3.0000mA, equivalent sample resistance＜1 Ω, non-linear＜± 0.002%F.S., temperature coefficient＜7ppm/ ℃.

6, with above-mentioned light source, monochromator, optical fiber light-guiding bundle, test camera bellows, intelligent light power meter, high accuracy number volometer, computer control system according to the accompanying drawing structure cost photoelectric properties comprehensive tester that is linked and packed.Key instrument specification and major parameter

1, light source: xenon lamp power 1500W; Working current 0～100A is adjustable

2, grating monochromator: the output wavelength scope is 200～1500nm, wavelength control precision 0.1nm

3, photometer: spectral response range is 400nm～1100nm, and measurement range is 1nW～1.000mW, and photosensitive area is 2.00mm ²

4, volometer: voltage range is 0～± 12000.0mV, input impedance:＞10M Ω, non-linear＜± 0.002%F.S., temperature coefficient＜2ppm/ ℃; Current range is 0～± 3.0000mA, equivalent sample resistance＜1 Ω, non-linear＜± 0.002%F.S., temperature coefficient＜7ppm/ ℃.

Claims (4)

1. A photoelectric performance comprehensive test device, comprising a light source, a sample chamber, a detection part, and a control part, characterized in that the xenon lamp light source (1) is used as a simulated solar light source in the device, and the grating monochromator (3) and the xenon lamp light source (1 ) are connected with an optical fiber light guide (21), and the grating monochromator (3) is connected with the test dark box (5) with an optical fiber light guide (22); a photocell (51), a photometer sensor ( 52), the output terminal of the photocell (51) is connected to the voltage/ammeter (4), the output terminal of the photometer sensor (52) is connected to the photometer host (7), and the output of the photometer host (7) and the voltage/ammeter (4) The end is connected with the computer (6) through the data acquisition interface, and the light intensity irradiated on the photocell (51) is measured in situ. 2. The photoelectric performance comprehensive test device according to claim 1, characterized in that a test platform (53) is provided in the test dark box (5), and a photocell (51), a photometer sensor is provided on the test platform (53) (52), the optical fiber light guide (22) passes the incident light hole (54) on the wall of the test dark box (5) and light is introduced into the photocell (51), and the two poles of the photocell (51) are connected with the voltage/ampere meter (4) by a wire, The photometer sensor (52) is placed at the position of the photocell (51) in the test dark box (5); the photometer sensor (52) is connected with the photometer host (7). 3. The photoelectric performance comprehensive testing device according to claim 1, characterized in that the xenon lamp light source (1) adopts monochromatic light and white light at the same time. 4. The photoelectric performance comprehensive test device according to claim 1 or 2, characterized in that the interface of the optical fiber guide beam (22) is a rectangular optical fiber interface, so that the incident light and outgoing light of the grating monochromator (3) can be more effective coupling.