In many ways, we seek greater efficiency, and both scientists and users want to increase the efficiency of solar energy utilization to achieve higher yields and better experiences. Regarding whether solar energy can reach 100% efficiency, the answer is no. Specifically from the following aspects to analyse.
Due to the immature technology and not efficient enough materials, in the photovoltaic conversion process, there will inevitably be a loss of different energies, such as heat generation, just as the failure of the perpetual motion machine, it is also not possible to have 100% efficiency of solar panels.
Shockley-Queisser limit also indicates that in the ideal state, the limit efficiency of monocrystalline silicon solar cells is also only up to 33.7%, the current best monocrystalline silicon panels efficiency is 27.3%, is the back-contact crystalline silicon heterojunction solar cells independently researched and developed by the Chinese enterprise LONGi Green Energy, which utilizes a full-laser patterning can be mass-produced manufacturing process production.
The world’s largest photovoltaic conversion efficiency is 34.6%, a record set by the Chinese company LONGi Green Energy, which developed the crystalline silicon-calcium-titanium stacked cell by optimizing the deposition process of the thin sludge film of the electron transport layer, introducing high-efficiency defective passivation materials, designing and developing high-quality interfacial passivation structures, and successfully realizing a new breakthrough of the crystalline silicon-calcium-titanium stacked cell technology on LONGi’s self-researching and commercialized CZ wafer substrate. breakthrough.
Nevertheless, the theoretical limit efficiency of crystalline silicon – CaTi stacked cell is only 43%, far from 100%.
The higher the efficiency, the more electricity generated by the same area of solar panels, the more we can save more materials and energy to do more things, higher efficiency means using less energy and cost to get greater benefits.
From the factors affecting the efficiency of solar energy, we can also from these aspects to improve the efficiency of solar energy
In different locations on the earth, the sun shines at different angles, and the intensity of the sun received is different. So how to choose the right location and angle?
If you are in the southern hemisphere, you need to face north; if it is the northern hemisphere, you need to face south. Also use the local latitude to choose the angle. Ideally, the angle of the solar panel should be the same or similar to the local latitude. In specific cases we need to use professional tools to measure.
Solar panels generally have a lifespan of more than 25 years, and proper installation and maintenance will increase the lifespan of the solar panels and slow down the reduction of conversion efficiency. The installation will be measured by professionals to determine the exact installation, and after installation, regular inspection and maintenance will be carried out to avoid the rapid aging of the panels as well as their safety hazards and other avoidable problems.
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