With the support of the Australian Solar Energy Research Institute, Professor Tim Schmidt of the School of Chemistry at the University of Sydney and the Helmholtz Material and Energy Center in Germany have developed a set of solar cells called “photochemical frequency increasing frequency conversionâ€. Turbocharger", which allows the conversion of lost energy in solar cells into electricity, resulting in a record 40% efficiency for low-cost solar panels that are suitable for use on rooftops. The findings were published in the latest issue of the Journal of Energy and Environmental Sciences.
Prof. Schmidt said that the new process using frequency-enhanced frequency conversion technology can capture part of the solar spectrum that is not currently used in solar cells and avoid expensive solar cell redevelopment. This technology improves the efficiency of solar cells by forcing two weak red photons to combine to form a light-harvesting, energetic yellow photon that is then converted to electricity.
Researchers now have a set of benchmark procedures for testing frequency-incremented inverter solar cells. Although the procedure needs to be improved, researchers have stated that this development path is very clear. (Feng Weidong)
LED Headlamp
The headlamp is a kind of lighting tool worn on the head, mainly used to free the hands of lighting. The design of the headlights allows users to carry out various activities, such as night walking, camping, exploring, etc., without the need for hand-held lighting, thereby freeing up both hands for other operations. Headlamp is usually composed of headlamp body, charger, rechargeable battery, power socket and cable, etc., to provide stable lighting effect. The use of headlights is widely used, not only for outdoor activities, but also for some indoor activities, such as night reading, repair and so on.
When choosing a headlamp, there are several key factors to consider: brightness, irradiation distance, battery life, waterproof and dustproof ability. The ideal headlamp should have enough brightness to cope with different lighting needs, good irradiation distance to ensure safety, long battery life to meet the needs of long-term use, and a certain waterproof and dustproof ability to adapt to various environments. In addition, the type of headlamp battery is also an important consideration, you can choose a rechargeable or replaceable battery headlamp, according to the use of habits and needs to choose.
The brightness of the headlamp is usually measured in lumen, and the higher the lumen value, the higher the brightness of the lamp. Waterproof and dustproof rating is also an important indicator of headlamp performance, in general, IPX6 or above waterproof rating can meet the needs of most outdoor activities. When choosing a headlamp, you should also consider its light source type, such as LED, halogen or xenon, etc. Each light source type has its own unique advantages and disadvantages, and is suitable for different scenes and needs.
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