From the efficiency breakthroughs in photovoltaic laboratories to the precise replication of aerospace tests, from the in-depth exploration of scientific research scenarios to the high yields and increased income in agricultural greenhouses - the "uncontrollability" of natural light was once a key bottleneck restricting the development of many fields. For two decades, Saifan Optoelectronics has been deeply engaged in the optoelectronics field. With technological innovation as its tool, it has developed a solar simulator that covers four core advantages: precision, stability, customization, and energy conservation. It has injected "on-demand adjustable light" into industrial practice, enabling innovation to move from "relying on the weather" to "active control".
I. Photovoltaic R&D: 0.3% stability, Enabling High-efficiency battery R&D to be one step ahead
The same batch of perovskite cells had a test efficiency of 25.1% in the morning, but dropped to 23.8% in the afternoon on a cloudy day. The data fluctuated like a roller coaster, and half a year was spent on verifying the data. The concern of Mr. Wang, the R&D director of a leading photovoltaic enterprise, is a common pain point faced by the industry. The arrival of the Saifan solar simulator has pressed the "accelerator" for photovoltaic research and development.
As A "precision calibrator of light", Saifan equipment is equipped with its independently developed 5th generation intelligent spectral fitting algorithm, covering the entire spectral band from 400nm to 1100nm, with a matching degree reaching A + level (0.875-1.125). Even in the near-infrared region of 780-1100nm, which is often overlooked by traditional equipment, The energy distribution restoration accuracy also exceeds 98%, which is equivalent to installing a "light microscope" for battery testing. Its stability is an industry benchmark: 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 one candle". The spatial uniformity reaches ±2%, ensuring that every inch of the battery cell can be "evenly illuminated", and the data deviation is strictly locked within 1%.
With the help of this device, Wang'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 related results were quickly 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. What is more worth noting is that the overall power consumption of the equipment using LED light sources is 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 dual breakthrough in "efficiency and cost".
Ii. Aerospace Testing: Weather resistance from -40℃ to 60℃, "Building a solid safety defense line" for space exploration
"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 extreme environment testing. The solar simulator customized by Saifan for the aerospace field provides a perfect answer with "military-grade quality".
The body of the equipment is made of 6061-T6 military-grade aluminum alloy, and it 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 no more than ±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), the R&D team calibrated through 200,000 sets of space measurement data, precisely eliminating atmospheric interference, with an irradiance error of ≤±1%, achieving a "1:1 replication" of the space lighting environment. Meanwhile, the equipment is equipped with a 0.1ms high-sensitivity sensor to correct the light intensity fluctuations in real time. Even after 720 hours of continuous low-temperature irradiation testing, the light intensity deviation can still be firmly controlled within ±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 further demonstrated its "ultra-fast customization capability" : It only took 7 days to complete the development of the "AM0 + Infrared Enhancement" module, increasing the irradiance in the 800-1100nm band by 30%, perfectly reproducing the light characteristics on the Martian surface, 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.
Iii. Scientific Research and Agriculture: 1% Precision Regulation, Unlocking the "Infinite Possibilities of Light"
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 the Saifan solar simulator 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".
In the agricultural sector, Saifan equipment has transformed into a "high-yield wonder". Lao Yang, a strawberry grower in Shandong Province, once faced the predicament of "strawberries with a sweetness of only 8 degrees and an average yield of less than 2,000 kilograms per mu" due to insufficient winter sunlight. After introducing the Saifan solar simulator, the technical team customized a lighting scheme of "65% red light + 10% blue light +2 hours of 380nm ultraviolet light" based on the photosynthetic characteristics of strawberries - red light promotes sugar accumulation, blue light enhances fruit firmness, and ultraviolet light increases anthocyanin content. After one growing season, the sweetness of strawberries soared to 11 degrees, the yield per mu increased by 150 kilograms, and the price per jin rose from 6 yuan to 12 yuan. The annual income of 20 mu of land increased by more than 200,000 yuan. Even more surprisingly, the power consumption of the equipment during operation is only 650W, saving 70% energy compared to traditional supplementary lighting lamps. The monthly electricity bill is only 300 yuan, achieving a win-win situation of "green production increase" and "cost optimization".
Iv. Full-cycle Service: From "Equipment Delivery" to "Value Co-construction"
Saifan Optoelectronics is well aware that high-quality products require comprehensive service support. For this reason, Saifan has established seven regional spare parts centers covering the whole country, reserving over 95% of commonly used spare parts, and implementing a 7× 24-hour response mechanism. Equipment malfunctions can be repaired within 48 hours. For instance, a photovoltaic enterprise's production line simulator suddenly broke down. Saifan engineers arrived at the scene within two hours and completed the repair within three hours, without affecting the production tasks of the day.
In response to the needs of customers from different industries, Saifan also offers "customized service packages" : providing "one-on-one" spectral calibration training for research institutions to help teams quickly master core operations; Provide production line linkage debugging for photovoltaic enterprises to ensure seamless integration of equipment with MES systems. Provide field guidance for agricultural customers and optimize lighting plans based on the growth stages of crops. In addition, when purchasing the equipment, you can enjoy the first spectral calibration service for free. The LED light source has a lifespan of up to 100,000 hours. Calculated based on 8 hours of use per day, it does not need to be replaced for 3 years, saving 50,000 yuan in maintenance costs annually compared to traditional equipment.
From the efficient operation of photovoltaic production lines to the safe execution of space missions, from scientific research breakthroughs in laboratories to the joy of harvest in the fields, Saifan solar simulators have become the "innovation partner" of over 200 global customers. The repurchase rate of core customers has reached 82%, and 85% of new customers come from recommendations from existing customers. When "controllable light" meets "industrial demands", more innovative stories that break boundaries are constantly unfolding with the support of Saifan Optoelectronics.
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