In the photovoltaic laboratory, engineers no longer suspend experiments due to rain. In the aerospace test room, researchers do not need to repeatedly try and make mistakes to replicate space light. Inside the agricultural greenhouses, farmers bid farewell to the helplessness of "relying on the weather for harvest" - all these changes stem from the technological achievements of Saifan Optoelectronics' 20 years of in-depth research in the optoelectronic field: LED solar simulators. It takes "independent research and development to break through technical barriers and scene customization to solve industry pain points" as its core, integrating the four major advantages of "precision, energy conservation, longevity and flexibility" into every detail, and has become the "photodynamic engine" for innovation in fields such as photovoltaic, aerospace, scientific research and agriculture.
Photovoltaic R&D: 0.3% data deviation + 11 years of maintenance-free, dual breakthroughs in cost reduction and efficiency improvement
Previously, when using a xenon lamp simulator, the efficiency of perovskite cells measured in the morning was 25.2%, but it dropped to 23.8% in the afternoon on a cloudy day. Half a year was spent on "verifying data", and the research and development progress lagged behind by 40%. The trouble of Mr. Zhang, the R&D director of a certain TOPCon battery enterprise, was once a common pain point in the photovoltaic industry. It was not until the introduction of the Saifan LED solar simulator that the R&D and cost logic was completely rewritten.
Saifan's technical hard power stems from 20 years of accumulation: The independently developed 5th generation intelligent spectral fitting algorithm, trained with 2 million sets of measured spectral data, has achieved A + level spectral matching degree (0.875-1.125) in the full band of 400nm to 1100nm, and the restoration accuracy in the near-infrared region of 780-1100nm exceeds 98%. The data deviation is strictly locked within ±0.3%. "For the current battery testing of the same batch, the data measured today will have a recurrence error of no more than 0.5% next week, and there has been no more grading error." With the help of equipment, Zhang's team identified the core issue of "13% low near-infrared absorption efficiency of the battery" in just 12 days. After optimizing the materials, the battery conversion efficiency jumped to 27.3%, and the results were published in Nature Photonics.
The cost advantage is equally significant: It adopts a 128-channel LED light source matrix with self-packaged technology, combined with low thermal resistance packaging technology. The light source has a lifespan of up to 100,000 hours. Calculated based on 8 hours of use per day, it can operate continuously for 11 years, completely eliminating the trouble of "replacing the lamp every six months". The power consumption of the 650W entire machine is only 22% of that of traditional xenon lamps. The monthly electricity cost for 8 units of equipment has dropped from 20,000 yuan to 4,500 yuan, and the annual electricity cost savings for a 1GW production line exceed 200,000 yuan. "Previously, the three-year operation and maintenance cost was 150,000 yuan. Now, with the Saifan equipment, the three-year operation and maintenance only costs 16,000 yuan. The money saved can be used to purchase two more testing devices." " Engineer Zhang sighed.
Aerospace testing: -40℃ weather resistance + 7-day customization, building a solid defense line for space safety
For spacecraft battery wing tests, if the light intensity drift exceeds 5% at a low temperature of -40℃, it is considered a scrapping data. The solar panel test of the Mars rover requires AM0 + infrared enhanced spectroscopy. Customizing foreign equipment will take three months. The project will definitely be delayed. The words of Engineer Li from the Beijing Institute of Aerospace Metrology reveal the strictness of extreme environment testing. The "all-scenario adaptability" of the Saifan LED simulator provides the perfect answer.
For the aerospace field, the equipment adopts a 6061-T6 military-grade body and airtight packaging design, which is like wearing a "space protective suit" for the equipment. Within the temperature range of -40 ℃ to 60℃, the temperature fluctuation is ≤±0.3℃, and the light intensity fluctuation in the 720-hour low-temperature irradiation test is ≤±1.2%, accurately reproducing the AM0 space spectrum Help extend the lifespan of spacecraft coatings by three times. During the test of the battery wing of a certain space station, with the help of this equipment, the team successfully screened out a new type of anti-radiation coating, extending the in-orbit service life of the battery wing from 5 years to 15 years.
In the face of special demands, Saifan's customization capabilities show even more advantages: During the Mars exploration mission, the development of the "AM0 + Infrared Enhancement" LED module was completed in just 7 days. By increasing the density of LED beads in the 800-1100nm band, the irradiance of this band was raised by 30%, perfectly matching the light characteristics on the Martian surface. The power generation efficiency of the Mars rover's solar panels was increased by 22%. The customization cycle is 87% shorter than that of foreign countries. "Previously, it took three months to wait for foreign equipment, but now Saifan can complete it in just seven days. Our space projects no longer have to be held back." " Engineer Li said.
Scientific research experiment: 1% precision regulation + low heat generation, unlocking new possibilities for optical applications
In the photocatalytic hydrogen production experiment, for every 1℃ increase in ambient temperature, the activity of the catalyst drops by 3%. Previously, when using xenon lamp equipment, the surface temperature exceeded 70℃, and the experimental bench became extremely hot, resulting in extremely poor data repeatability. Professor Zhou from Qingdao University of Science and Technology's problem was completely solved by the "low heat generation advantage" of the Saifan LED solar simulator.
The Saifan LED simulator supports 1% precision adjustment in the ultraviolet (300-400nm), visible and near-infrared bands. The light intensity can be continuously switched from 1W/m² (weak light) to 1500W/m² (strong light). It can also simulate 8 scenarios such as day and night alternations and pulsed light, just like a "palette of light". Professor Zhou's team increased the photocatalytic hydrogen production efficiency by 40% by adjusting the proportion of ultraviolet light from 5% to 15%, and reduced the cost of green hydrogen to 35 yuan per kilogram, reaching the commercialization threshold.
The low-heat design of the equipment is a boon for scientific research: by adopting the "distributed heat dissipation + microchannel water cooling" technology, the surface temperature during operation is only 38℃, the fluctuation of the experimental environment is ≤±0.5℃, and the data repeatability reaches 98%. "Previously, students would rush to conduct experiments during the low-temperature period. Now, they can obtain stable data at any time, and the research progress has been accelerated by 50%." " Professor Zhou mentioned that a certain agricultural research group used this equipment to simulate the "strong ultraviolet + high infrared" spectrum of the plateau, and the yield of the barley variety they cultivated increased by 25%, which has been widely promoted in Qinghai.
Agricultural planting: "Light Formula" + Energy conservation, illuminating the path to prosperity for farmers
In winter, due to insufficient light in the greenhouses, the sweetness of strawberries is only 8 degrees, and they can only be sold for 6 yuan per jin. The 20 mu of land incurs a loss of over 100,000 yuan in a year. Traditional supplementary lighting fixtures consume a lot of energy and generate a lot of heat. If you get too close, it will burn strawberries; if you get too far, the light will be uneven. The predicament of Lao Yang, a strawberry grower in Shandong, is a common problem in facility agriculture in the north. The situation completely changed after the introduction of the Saifan LED solar simulator in 2023.
The Saifan technical team conducted in-depth research in greenhouses and, based on the photosynthetic characteristics of strawberries, customized a lighting plan of "65% red light + 10% blue light +2 hours of 380nm ultraviolet light" - red light promotes sugar accumulation, blue light enhances fruit firmness, and ultraviolet light increases anthocyanin content. When the equipment is in operation, the surface temperature is only 38℃. It can be hung 30 centimeters above strawberries to ensure uniform lighting. With a low-power design of 650W, the monthly electricity bill is only 360 yuan, saving 70% compared to traditional fill lights.
After one growing season, the sweetness of Lao Yang's strawberries rose from 8 degrees to 11 degrees, the anthocyanin content increased by 18%, the yield per mu rose from 2,000 kilograms to 2,150 kilograms, the selling price per jin rose to 12 yuan, and the annual income of 20 mu of land increased by more than 200,000 yuan. "Before, growing strawberries relied on the weather. Now, with the LED light from Saifan, it's both worry-free and profitable!" " Nowadays, Lao Yang's strawberry garden has become a local "Science and Technology Agriculture demonstration Base", and more than ten surrounding growers have followed suit and adopted Saifan LED equipment.
Full-cycle service: Industry-exclusive guarantee, ensuring worry-free use
Saifan is well aware that high-end equipment requires professional service support. It has launched an "industry-exclusive service package" : in the photovoltaic field, it provides "production line linkage debugging" to ensure seamless integration of equipment with the MES system. In the aerospace field, we offer "extreme environment calibration services", providing on-site low-temperature irradiation calibration once a year. In the field of scientific research, we offer "spectral customization training" to help teams master the 1% accuracy control skills. In the agricultural sector, "field guidance services" are provided to optimize lighting plans and increase yields.
The seven major spare parts centers across the country ensure that the fault response time is no more than 2 hours, and the average repair time is only 4 hours. When a photovoltaic factory's equipment suddenly broke down, engineers from Saifan arrived at the scene in 2 hours and resumed production in 3 hours. The core components of the equipment are covered by A 3-year warranty. Free on-site maintenance is provided after 3 years of use. The equipment in a certain scientific research laboratory has been in use for 5 years, and the spectral matching degree still remains at the A + level.
Today, Saifan LED solar simulators have served over 200 customers worldwide, with a repurchase rate of 90% in the photovoltaic industry. In the aerospace field, they have supported 12 national-level tasks, and in the scientific research field, they have facilitated the publication of over 20 achievements in SCI journals. From the efficiency revolution in photovoltaic research and development to the safety escort for space missions, and then to the harvest code in the fields, Saifan Optoelectronics has used 20 years of technological accumulation to make "controllable light" truly become a "booster" for industrial upgrading.
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