In the photovoltaic research and development, the experiment was postponed due to rainy weather. In aerospace tests, repeated trial and error were made to replicate space light. In agricultural planting, relying on the weather and unstable yields - the uncontrollability of natural light was once a "roadblock" for many industries to break through and develop. For two decades, Saifan Optoelectronics has been deeply engaged in the optoelectronics field. With its independently developed solar simulator, it has integrated "precision, stability, customization, and energy conservation" into the core of its products, bringing "controllable light" to the photovoltaic, aerospace, scientific research, agriculture and other fields, and making innovation bid farewell to being "dependent on the weather".
Photovoltaic R&D: Precise and efficient, accelerating breakthroughs in battery technology
"Previously, when testing perovskite/silicon tandem cells, the conversion efficiency was measured at 25.1% in the morning, but dropped to 23.8% in the afternoon on a cloudy day. The data fluctuated like a roller coaster. It took half a year to verify the validity of the data, and the research and development progress was seriously lagging behind." " The concern of Mr. Wang, the R&D director of a leading photovoltaic enterprise, is a common pain point in the industry. After the introduction of the Saifan solar simulator, the research and development predicament was easily resolved.
The Saifan solar simulator is like A "precision calibrator of light", with a spectral coverage of the entire band from 400nm to 1100nm. It is equipped with the 5th generation intelligent spectral fitting algorithm, achieving a spectral matching degree of A + (0.875-1.125). Even in the near-infrared region of 780-1100nm, which is often overlooked by traditional equipment, The accuracy of energy distribution restoration also exceeds 98%. Its stability is even leading in the industry: the light intensity fluctuation is as low as ±0.3% per hour. After a continuous 10-hour test, the light intensity change does not exceed "the brightness of a night light". The spatial uniformity reaches ±2%, ensuring that every inch of the battery cell is evenly illuminated, and the data deviation is strictly locked within 1%.
With the help of this device, Wang's team discovered the core issue of "the battery's near-infrared absorption efficiency being 13% lower" in just 12 days. After optimizing the materials, the battery conversion efficiency jumped to 27.3%, and the related results were published in ACS Energy Letters. In the mass production stage, an automated test line composed of 8 Saifan simulators is seamlessly integrated with the MES system of the production line. The test speed reaches 60 pieces per minute, and the A-grade product rate has increased from 88% to 94%, reducing the loss of defective products by over 16 million yuan annually. Meanwhile, the equipment adopts LED light sources, with an overall power consumption of only 650W, which is 70% more energy-efficient than traditional xenon lamp equipment. A 1GW photovoltaic production line can save 200,000 yuan in electricity costs annually, achieving a double harvest of "efficiency and cost".
Aerospace testing: Extreme adaptation, Safeguarding the safety of space missions
"In-orbit life assessment of spacecraft battery wings: A 1% deviation in light intensity can lead to a three-year error. Traditional simulators have a light intensity drift of over 4% at a low temperature of -40 ℃. The test data simply cannot be used for safety assessment." " The concerns of Sister Li, a test engineer from a certain team of China's aerospace industry, reveal the strictness of aerospace testing. The solar simulator customized by Saifan for the aerospace field builds a solid safety defense line with military-grade quality.
The equipment adopts a 6061-T6 military-grade aluminum alloy body, and is equipped with an airtight packaging design for the optical chamber and transmission chamber, just like wearing a "space protective suit". It can operate stably within an extreme temperature range of -40 ℃ to 60℃, with a temperature fluctuation of ≤±0.3℃ and a spectral output deviation of no more than ±0.5% at all times. When simulating the AM0 spectrum in space (solar radiation without atmospheric filtering), through calibration with 200,000 sets of measured data in space, atmospheric interference is precisely removed, with an irradiance error of ≤±1%, achieving a "1:1 replication" of space lighting. Meanwhile, the equipment is equipped with a 0.1ms high-sensitivity sensor, which can correct the light intensity fluctuations in real time. After continuous 720-hour low-temperature irradiation test, the light intensity deviation is always ≤±1.2%, fully recording the aging law of the material.
Relying on these precise data, the aerospace team successfully developed a new type of anti-radiation coating, which has extended the in-orbit lifespan of the spacecraft's battery wings by three times. In the Mars exploration mission, the Saifan team completed the development of the "AM0 + Infrared Enhancement" module in just 7 days, increasing the irradiance in the 800-1100nm band by 30%, perfectly reproducing the surface light of Mars, and helping to increase the power generation efficiency of the Mars rover's solar panels by 22%, solving the "energy anxiety" in deep space exploration.
Scientific research experiments: Flexible customization, unlocking new possibilities in optical applications
The photocatalytic hydrogen production experiment requires adjusting the proportion of the ultraviolet band from 5% to 15%. Traditional equipment only has a fixed spectrum, and the experiment has been stuck for half a year with no progress. The predicament of Professor Zhou from Qingdao University of Science and Technology is a common problem in the field of scientific research. The "customization capability" of Saifan solar simulators has opened up a new window for scientific research and innovation.
This device can be called a "palette of light" : The ultraviolet (350-400nm), visible (400-760nm), and near-infrared (760-1100nm) bands support 1% precision adjustment. The light intensity can be freely switched from 0.1sun (overcast light) to 2sun (midday strong light), and it can also simulate 8 lighting scenarios such as day-night alternations, pulsed light, and seasonal changes. Professor Zhou's team successfully increased the photocatalytic hydrogen production efficiency by 40% by precisely regulating the light parameters. The related results were published in "Applied Catalysis B: Environmental".
Meanwhile, the equipment adopts the "distributed heat dissipation + microchannel water cooling" technology. During operation, the surface temperature is only 38℃, and the temperature fluctuation of the experimental environment is ≤±0.5℃, ensuring the stability and reliability of the data. "Previously, when students conducted experiments, they had to seize the low-temperature period. Now, they can obtain precise data at any time, and the progress of scientific research has directly increased by 50%." " Professor Zhou mentioned that a certain agricultural research group used this equipment to simulate the strong light on the plateau, and the yield of the barley variety they cultivated increased by 25%, which has been widely promoted in Qinghai.
Agricultural planting: Green production increase, lighting up the path to prosperity for farmers
In winter, the greenhouses lack sufficient light, and the sweetness of strawberries is only 8 degrees. The yield per mu is less than 2,000 kilograms, and the price per jin is 6 yuan. The 20 mu of land earns less than 100,000 yuan 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. After the introduction of the Saifan solar simulator in 2023, the Strawberry Garden has completely transformed.
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 help of Saifan's light, 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 started using Saifan equipment.
Full-cycle service: Professional guarantee, ensuring worry-free use
Saifan Optoelectronics is well aware that high-quality products require comprehensive service support. For customers in different industries, Saifan has launched "exclusive service packages" : 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 regional spare parts centers across the country have over 95% of the commonly used parts in stock, providing a 7× 24-hour response. Equipment malfunctions can be repaired within 48 hours. A photovoltaic enterprise's production line simulator suddenly experienced a software failure. Saifan engineers provided remote guidance and solved the problem within one hour, without affecting the production on the same day. The core components of the equipment are covered by a 3-year warranty. The LED light source has a lifespan of up to 100,000 hours. After 3 years of use, we can also provide free on-site comprehensive maintenance to ensure that the accuracy does not decline.
Today, Saifan solar simulators have served over 200 customers worldwide. The repurchase rate of core customers is 85%, and 80% of new customers come from referrals by existing customers. From the efficiency breakthroughs in photovoltaic research and development to the safety protection in aerospace tests, from the innovative support in scientific research experiments to the income-increasing empowerment in agricultural planting, Saifan Optoelectronics has illuminated the innovation paths of various industries with its "controllable light". If your work or project is troubled by lighting problems, the Saifan solar simulator might just be the key for you to break through the bottleneck.
Link Microblog
