1. monocrystalline silicon advantages and disadvantages
Monocrystalline silicon solar panels are the most commonly used residential solar panels monocrystalline silicon solar panels have the highest efficiency of 22% to 26% or so, followed by monocrystalline silicon solar panels have a very long lifespan of more than 25 years, monocrystalline solar panels of the heat resistance and sensitivity to light is also relatively high in the high temperature and cloudy and rainy weather power generation is more monocrystalline silicon solar panels are more expensive, and secondly, for large-scale installations need to be various small Solar panels are connected. Monocrystalline silicon is still the first choice for solar panels.
2. monocrystalline silicon solar panel types
Monocrystalline silicon wafers have a weak electrical conductivity, conductivity increases with temperature, in pure monocrystalline silicon within the addition of phosphorus, boron or arsenic can enhance the degree of conductivity.
Monocrystalline silicon solar panels due to the different regions of the mixture of different materials lead to discharge level charged properties are different, N-type monocrystalline silicon solar panels wafers doped with phosphorus so that the body of the c-si region negatively charged, the top of the emitter layer mixed with boron negatively charged, P-type monocrystalline silicon solar panels of the body of the c-si as a result of the addition of boron showing a clear block negatively charged, the top of the emitter layer added phosphorus is positively charged.
3. N-type monocrystalline silicon solar panels and P-type monocrystalline silicon solar panels advantages and disadvantages comparison
(1) conductivity way, N-type monocrystalline silicon solar panels for electronic conductivity, P-type monocrystalline silicon solar panels for hole conductivity, N-type in the addition of phosphorus is more, the number of free electrons is more the number of mobile electrons increase makes the resistivity lower conductivity increase, P-type added more boron, resulting in more holes, will be lower conductivity, electrical conductivity increases.
(2) light-induced degradation, light-induced degradation refers to the solar panels in the initial put into use is the maximum power generation efficiency, but in the initial efficiency of the temporary decline and long-term use of light sensitivity to reduce the decline in power generation efficiency phenomenon is called light-induced degradation, light-induced degradation of the lower the degree of sensitivity to solar panels the higher the stability of the efficiency of the power generation, for the N-type and P-type solar panels N-type solar panels of the degree of sensitivity to a lower degree, so N-type Solar panels can ensure more stable and longer performance.
(3) temperature coefficient, the efficiency of solar panels will be reduced with the increase in temperature coefficient the higher the solar panels the temperature of the solar panels the fewer factors affecting them, for N-type and P-type solar panels, N-type solar panels have a higher temperature coefficient, which means that the N-type solar is more suitable for operation in high temperature situations.
(4) efficiency, P-type monocrystalline silicon solar panels due to LID caused by the existence of boron-oxygen defects, which will lead to a rapid decline in the module performance of solar panels in a short period of time, up to 10%, N-type solar panels will not exist this phenomenon, will only be periodically functional decline is inevitable, in terms of efficiency N-type solar panels reach 25.7% efficiency, while the P-type solar panels are only 23.6%, P-type The decay cycle of solar panels is also shorter.
(5) low-light treatment, for n-type solar panels for low-light treatment of the stronger effect, the n-type solar panels in a day of power generation for a longer period of time, and at the same time for cloudy and rainy days n-type solar panels power generation than p-type solar panels power generation effect is also good.
(6) Cost, n-type solar panels are generally better than p-type solar panels, the price is naturally higher than the price of p-type solar panels.
(7) radiation degradation, for P-type solar panels put radiation and degradation of the effect is better, space activities are also mainly used in P-type solar panels.
4. N-type monocrystalline silicon solar panels and P-type monocrystalline silicon solar panels which one is better?
N-type monocrystalline silicon solar panels, solar panels sold in daily life or P-type solar panels are mainly from the overall performance of the N-type solar panels better performance, but the price is higher, based on the N-type solar panels of the performance of the continuous improvement of N-type solar panels on the market in the status of the N-type solar panels more and more high.
