Did You Know
What is P-Type Solar Cells
P-type cells are usually built with a silicon wafer doped with boron. Since boron has one less electron than silicon, it produces a positively charged cell.
P-type cells are affected by light-induced degradation, which causes an initial drop in output due to light exposure. This has historically been the most common treatment method for solar cells.
Modified vs Pure Sine Wave Inverters
Electricity frequency is the number of waves completed per second – thus in South Africa electricity is produced at 50Hz meaning 50 completed sine waves per second at 230volts
The main difference between modified sine wave and pure sine wave inverters are show in the above graph. In general, because the total harmonic distortion is higher in modified square wave inverters, motors will run hotter (less efficiently, consuming up to 30% more energy than with pure sine wave inverters), and likely not last as long. Additionally, a modified square wave inverter will often cause a “buzz” to be heard from audio devices and sometimes other appliances like ceiling fans and microwave ovens. Pure sine wave inverters are recommended above the usage of Modified sine wave inverters.
PERC Solar Panels
PERC stands for Passivated Emitter and Rear Cell technology. PERC cells are distinguished by an extra layer of material on the backside of the solar panel, called the passivation layer.
Think of the passivation layer like a mirror. It reflects light that passes though the panel, giving it a second chance to be absorbed by the solar cell. More solar radiation is absorbed by the cell, which results in a higher efficiency panel.
PERC cell technology is gaining traction because of the inclusion of the passivation layer doesn’t add huge manufacturing delays or expenses. The efficiency boost more than justifies the extra step in manufacturing process.