"Due to continuous rainy days, the deviation of photovoltaic cell test data exceeds 6%, and all the results of half a year need to be retested." "Under the extremely cold of -40℃, the light intensity of traditional equipment drifts by 5%, and it is not daring to use it for spacecraft cell wing testing." "We want to adjust the proportion of ultraviolet rays from 5% to 15%." "Experiments have been stuck for half a year with no progress" - These "light anxieties" in photovoltaic research and development, aerospace testing, and scientific research exploration have once made countless practitioners worry about the weather and equipment. It was not until Saifan Optoelectronics, with 20 years of accumulation in optoelectronic technology, brought "controllable, precise and stable artificial sunlight" into laboratories, workshops and farmfields that "no matter what the external environment is like, experiments can be advanced, tests can be guaranteed and harvests can be steadily improved" became the norm.
Today, this "reliable light" has served over 200 customers worldwide, helping photovoltaic enterprises shorten their research and development cycles by 60%, ensuring data accuracy for 12 national-level space missions, assisting research teams in publishing over 20 papers in SCI, and enabling strawberry grower Lao Yang from Shandong to earn an additional 200,000 yuan a year from his 20 mu of land.
1. Photovoltaic R&D: 0.08% stability + A + grade spectrum, data is stable and efficiency soars
Wang, an engineer from a perovskite battery company, still remembers the embarrassing situation on a rainy day last year: "The battery efficiency measured in the morning was 25.1%, and it dropped to 23.8% when measured again on a cloudy day in the afternoon. The data was like a roller coaster. For half a year, half of it was repeatedly verified. Competitors have all launched new products, but we are still polishing the data." At that time, the first thing he did every day at work was to check the weather forecast. "I got a headache when I saw a cloudy day, and all my experimental plans were disrupted."
It was not until the workshop was equipped with Saifan's solar simulators that Engineer Wang's "dependence on weather forecasts" completely improved. The core confidence of this device comes from its solid technical parameters: It adopts A hybrid architecture of "xenon lamp + LED supplementary lighting", covering the entire wavelength range from 350nm to 1100nm, with a spectral matching degree reaching A + level (IEC 60904-9 standard). Especially in the near-infrared region of 780-1100nm, which is often overlooked by traditional equipment, the energy restoration accuracy exceeds 98%. Even a 0.5% absorption difference can be precisely captured. What's more crucial is the stability of light intensity: the fluctuation rate of light intensity for 8 consecutive hours is as low as 0.08%, far exceeding the industry average of 0.3%. "The data measured today will have a reproduction error of no more than 0.1% next month. There's no need to struggle with the data anymore."
With this precision, Wang's team identified the core issue of "12% lower near-infrared absorption efficiency of the battery" within 12 days. After optimization, the efficiency jumped from 23% to 27.5%, and the results were published in ACS Energy Letters. On the mass production line, an automated test line composed of 10 Saifan simulators screens at A speed of 60 cells per minute. Combined with a spatial uniformity of ±3% (ensuring that every inch of the battery cells receives consistent light), the A-grade product rate has increased from 88% to 93%, reducing the cost of 12 million defective products in a year. More surprising energy consumption: The 650W overall power consumption is 70% less than that of traditional xenon lamps. A 1GW production line saves 200,000 yuan in electricity costs annually. The LED light source has a lifespan of 100,000 hours (34 years if used for 8 hours a day), completely eliminating the trouble of "replacing the lamp every six months".
Ii. Aerospace Testing: -40℃ tolerance + 1% irradiation error, replicating space light, mission not delayed
Sister Li, a space tester, had many concerns when testing the battery wings of the space station before: "In the in-orbit life assessment of spacecraft battery wings, a 1% deviation in light intensity could lead to a three-year error. Traditional equipment has a light intensity drift of over 5% at a low temperature of -40 ℃. The test data is simply not daring to be used." Once, in order to meet the satellite launch schedule, she and her team almost "made do with the existing data", but in the end, they gritted their teeth and waited for the equipment. "During that period, I couldn't sleep every day."
Saifan's solar simulator can be called a "ground space capsule". It features a 6061-T6 military-grade aluminum alloy body, is equipped with dual circulation water-cooled temperature control and airtight packaging, and can operate stably within the temperature range of -40℃ to 60℃. The temperature fluctuation is ≤±0.3℃, and the spectral output deviation is always ≤±0.5%. When simulating the AM0 spectrum in space, it was calibrated with 200,000 sets of actual space measurement data, precisely eliminating atmospheric interference, with an irradiance error of ≤±1%, almost no different from real space light. During the 720-hour aging test of the space station's battery wing, the fluctuation of the equipment's light intensity was always ≤0.1%, fully recording the aging law of the material. This has contributed to the development of a new anti-radiation coating, extending the in-orbit lifespan of the battery wing from 5 years to 15 years.
What impressed Sister Li the most was the speed of customization. The Mars exploration mission requires a special spectrum of "AM0 + infrared enhancement". The Saifan team completed the module development in just 7 days, increasing the irradiance in the 800-1100nm band by 30% and perfectly reproducing the surface light of Mars. Previously, it took three months to wait for imported equipment and a deposit of 2 million yuan had to be paid. Saifan can deliver it in just seven days, saving 1.5 million yuan. The key data that increased the efficiency of the Mars rover's sails by 22% was all measured by it.
Iii. Scientific Research and Agriculture: 1% precision Control + 8 scenarios, smooth experiments, good harvests
Professor Zhou from Qingdao University of Science and Technology was stuck for half a year over the photocatalytic hydrogen production experiment: "The proportion of ultraviolet light needs to be adjusted from 5% to 15%. Traditional equipment only has three fixed Settings, and no matter how you adjust it, it won't meet the requirements. One graduate student was even worried that he wouldn't be able to graduate." During that period, he spent every day in the laboratory modifying circuits, but still couldn't solve the problem.
Saifan's equipment was like a "palette of light", instantly solving the problem. It supports 1% precision adjustment in the ultraviolet, visible and near-infrared bands. The light intensity can be freely switched from 0.1sun (on cloudy days) to 2sun (strong midday light), and it can also simulate 8 scenarios such as day and night alternations and pulsed light. After Professor Zhou's team adjusted the proportion of ultraviolet light to 15%, the hydrogen production efficiency increased by 40% at once, and the paper was successfully published in "Applied Catalysis B: Environmental". "Nowadays, students don't have to compete for 'sunny days' when conducting experiments. They can produce stable data at any time, and their research progress has increased by 50%. This year, three students have graduated ahead of schedule." "
This "customizable light" becomes a "harvest magic tool" in the farmland. Lao Yang, a strawberry grower in Shandong Province, used to rely on sodium lamps for supplementary lighting in winter. The sweetness of his strawberries was only 8 degrees, and they were sold at 6 yuan per jin. Now, the Saifan team has conducted on-site research and customized a plan of "65% red light + 10% blue light +2 hours of 380nm ultraviolet light", providing 6 hours of supplementary lighting every day. The equipment has a uniform light distribution of 95%, with a surface temperature of only 38℃, which will not burn crops. The LED light source has a lifespan of 100,000 hours and does not need to be replaced. After one growing season, the sweetness of strawberries rose to 11 degrees, anthocyanins increased by 18%, and the yield per mu increased by 150 kilograms. Each jin could be sold for 12 yuan, and the annual income of 20 mu of land increased by more than 200,000 yuan. The monthly electricity bill is only 360 yuan, which is 70% less than that of sodium lamps. Now, more than ten farmers around are following me to buy equipment from Saifan!
Fourth, it's not just about equipment; it's also a "light partner that accompanies you in innovation"
Saifan Optoelectronics knows that good equipment must be backed by good service. Seven spare parts centers across the country have a reserve of 98% of commonly used components, promising a 7× 24-hour response and repair within 48 hours. Once, a photovoltaic enterprise's equipment suddenly broke down. Engineers arrived at the scene in two hours and resumed production in three hours, without delaying the test on that day.
For different clients, the service is also specially "tailor-made" : providing "one-on-one" spectral regulation training for research institutions to help the team master the core operations within a week; Conduct production line linkage debugging for photovoltaic enterprises to ensure seamless integration of equipment with the MES system. Run to the fields for agricultural customers and adjust the "light formula" according to the growth stage of the crops. The equipment can also enjoy the first free calibration. The core components are guaranteed for 3 years. There are devices that have been used in the laboratory for 5 years, and the spectral matching degree still remains at A + level after maintenance.
V. The "light" of the future illuminates more paths of innovation
Today, as the "dual carbon" goals are advancing and deep space exploration is accelerating, Saifan is still adding new skills to this "light" : developing a "quantum dot light source + AI adaptive calibration" system, which has raised the spectral accuracy to the 0.05% level, covering the ultra-wide band from 200nm to 2500nm. Create special models that can withstand high pressure and radiation, suitable for deep-sea exploration and tests at lunar bases. Build a "Light Testing Cloud Platform" to achieve remote collaboration and data sharing among multiple devices, enabling global customers to share precise light resources.
From the scientific research breakthroughs in the laboratory, to the efficiency revolution on the production line, and then to the joy of harvest on the ridges of the fields, with 20 years of technological accumulation, Saifan Optoelectronics has turned "controllable light" into an "innovation accelerator" for various industries. If your work is also trapped by the "lighting problem", this "light that comes whenever you want" might just be the key for you to break the deadlock.
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