Amid the global energy transition wave, the photovoltaic industry is reshaping the energy landscape at an astonishing speed. However, from the laboratory to mass production, from material research and development to terminal application, every link cannot do without the precise simulation and testing of sunlight. Beijing Saifan Optoelectronic Instrument Co., LTD. (hereinafter referred to as "Saifan Optoelectronic") has redefined the technical standards of solar simulation with its independently developed 3A-level steady-state LED solar simulator, achieving "Chinese precision", and has become a trusted "light engine" for global research institutions and the industrial sector.
I. Technological Breakthrough: The Leap from "Simulation" to "Replication"
The core technology of Saifan Optoelectronics' LED solar simulator stems from a profound insight into the essence of light science:
Adaptive spectral synthesis algorithm
Through a 128-channel LED light source matrix, the absorption spectrum characteristics of the material are calculated in real time, and the energy proportion of each band is automatically adjusted. In the test of perovskite/organic hybrid cells, the spectral matching degree has been improved by 15% compared with the previous generation, and the data repeatability error is controlled within 0.5%, accurately reproducing multiple standard solar spectra such as AM0 (space environment) and AM1.5G (ground standard).
Ultra-micro light emphasis section technology
Breaking through the traditional equipment's lower limit of 10W/m² adjustment, it achieves continuous adjustment from 1W/m² to 1500W/m², meeting the precise testing requirements in low-light environments (such as algal photosynthesis research), and providing a dedicated solution for deep-sea light ecological research.
Transient response test module
The response speed has been enhanced to 10μs, enabling the capture of the instantaneous charge separation process of photovoltaic materials after being excited by light, and facilitating the analysis of exciton diffusion paths. This technology has been granted three national invention patents and has played a key role in top journal achievements such as Science Advances.
Ii. Application Scenarios: Full-chain empowerment from laboratory to industrialization
1. Photovoltaic field: The "Secret Weapon" for Efficiency Enhancement
On the R&D side: At the HJT battery production line of Longi Green Energy's Xixian base, the multi-angle light test function of the Saifan simulator (supporting 0-90° incident Angle adjustment) helps engineers identify the light reflection loss problem at the battery edge. By optimizing the packaging process, the component power was increased by 3.5W, and the annual new output value exceeded 200 million yuan.
At the mass production end, after JinkoSolar's Jiangxi factory introduced Saifan equipment, the energy consumption per GW of testing dropped from 1.2 million kilowatt-hours to 400,000 kilowatt-hours (an energy-saving rate of 66.7%), and the cost of replacing light sources decreased from 1.5 million yuan per year to 150,000 yuan (a reduction of 90%). The remote operation and maintenance function of the equipment (supporting wireless monitoring within 50 kilometers) has reduced the engineer's response time from 2 hours to 15 minutes.
2. Aerospace Engineering: "Light Platform" for Verifying Reliability in Extreme Environments
The Beijing Institute of Aerospace Metrology and Testing Technology used a Saifan 3A-level simulator to simulate the AM0 spectrum and verify the stability of flexible solar cells for spacecraft under extreme temperature and irradiation conditions. Test data provides crucial support for the power system design of the manned space program, ensuring the long-term reliability of batteries in the space environment.
3. Materials Science and Agriculture: Unlocking the Interactive Code between Light and Matter
Material research: A team from Qingdao University of Science and Technology optimized the orientation of tin-lead alloy perovskite films through the ultraviolet-visible spectrum regulation of the Saifan simulator, achieving a battery conversion efficiency of over 22.6%. The device supports simultaneous testing of photoluminescence (PL) and quantum efficiency, providing multi-dimensional data for material mechanism research.
Agricultural application: By simulating the light cycles of different seasons, the influence mechanism of light quality on plant photosynthesis is revealed. The related achievements have been applied to the design of intelligent greenhouse light control systems.
Iii. Intelligence and Energy Conservation and Environmental Protection: Redefining the Value of Research Equipment
1. Intelligent testing system: Making data collection more efficient
One-click experimental process: Pre-set over 100 industry-standard test plans. The entire process from parameter setting to data export is fully automated, reducing the preparation time for a single experiment from 40 minutes to 5 minutes. As a result, a laboratory of a certain university increased the average daily number of test samples from 20 to 80.
Multi-dimensional data fusion: Synchronously collect 12 parameters such as spectral response, I-V curve, and temperature coefficient, generate visual data spectra, support cross-analysis with characterization results such as XRD and SEM, and accelerate the resolution of material mechanisms.
2. Long lifespan and low power consumption: Practicing the concept of green scientific research
The lifespan of LED light sources: up to 100,000 hours (approximately 11 years), which is more than five times that of traditional xenon lamps.
The overall power consumption of the machine is only 650W, which is 70% more energy-efficient than xenon lamp equipment and significantly reduces the usage cost.
Iv. Company Strength: Centered on innovation, we firmly establish industry benchmarks
As a "Specialized, refined, distinctive and innovative" small and medium-sized enterprise and a high-tech enterprise in Beijing, Saifan Optoelectronics holds 33 patents and 33 software Copyrights, and its technical strength has been officially recognized. Its products serve research institutions in 23 countries around the world. In the "Nature" and "Science" series of journals, there are 127 papers that cite the test data of Saifan equipment.
1. Customized services: Meeting diverse demands
Production line solution: Customized an automated testing production line for Canadian Solar, integrating multiple 7IS0503A-LED simulators, achieving efficient testing of 500 solar cells per hour, with a 200% increase in production capacity.
Extreme environment adaptation: We have launched customized solutions such as high and low temperature combined systems (supporting temperature control from -196℃ to 300℃) and vacuum light test chambers (meeting the vacuum environment requirements of 10⁻⁵Pa).
2. Participation in industry standards: Promoting the standardized development of the industry
Saifan Optoelectronics has participated in drafting multiple national standards for photovoltaic testing and established the "Saifan Optoelectronics Science Fund", which supports 10 cutting-edge research projects each year. Currently, it has established joint laboratories with 12 985 universities.
V. Conclusion: The "Artificial Sun" That Illuminates the Future
From the cutting-edge exploration in the laboratory to the rigorous verification in the space environment, from the "10-cent era" of photovoltaic electricity prices to the grand goal of global energy transition, the LED solar simulator of Saifan Optoelectronics has always been a reliable "artificial sun" for scientific research and industry with its tough parameters of "0.5% error control", "100,000-hour lifespan" and "70% energy saving".
In the future, Saifan Optoelectronics will continue to iterate its technology, launch aerospace-grade products covering a wavelength of 1800nm, and develop AI spectral regulation technology to empower the global new energy revolution with "Chinese precision". As Researcher Li from the Institute of Chemistry, Chinese Academy of Sciences, said, "The spectral resolution of the new device reaches 1nm, allowing us to discover the special impact of the 532nm band, which was previously overlooked, on the activity of the catalyst." This precisely controllable "light" is illuminating every possible innovation in the field of new energy.
Beijing Saifan Optoelectronic Instrument Co., LTD
Official website: http://www.7-s.com.cn
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