The high cost has always been an obstacle of promoting the technology of photovoltaic power generation and people are trying to solve the problem through aspects such as the raw material, manufacturing technique and operation scale. Besides these factors above, researchers have found that the cost of the photovoltaic system can be cut down by reducing the proportion that the solar battery demands, therefore, technology of concentrating began to start.
The so-called concentrating photovoltaic technology, is the one that amplifying the sunlight received to hundreds of times by optical lens and concentrating the amplified light on the efficient, small-sized photovoltaic batteries. However, much heat will be accumulated after concentration,which will be not applied for those silicon batteries that have bad heat dissipation function if the battery belongs to the powerful one.
Multi-node III-V compound battery is the main material for the concentrating photovoltaic technology. Comparing with the silicon battery and the hull cell, multi-node battery has many advantages. First is that it has the function of wide spectra absorb which will promote the efficiency of conversion. Second, this kind of batter has low temperature parameters which will enable it to work under high temperature, as a result, the battery area will be reduced on a great extent and powerful concentrating technology can be put into use as well. Besides, the cost and the productive consumption will be largely reduced by applying the relatively cheap concentrating product instead of the high price semiconductors. The conversion efficiency of the multi-node battery can be reached up to 60% in theory.
However, in the long term, the market of the silicon and hull cell can not be completely replaced by the concentrating photovoltaic technology, said specialists, the concentrating photovoltaic system suits for large-scale power station while the silicon and hull cell can suit for not only large power station but also for power systems like home appliance, commercial and architectural combined systems. Related chip is: HD6303Y.
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