Part of a series in renewal energy technologies brought by  M/s Paavi Solar

 

Friends, yesterday our topic was types of Solar Panels. Today we will learn about new developments in conventional solar panel technology for increasing its efficiency.

Details of new Types of solar panels is as under-

1.      Bi-facial Solar Panel --- Bi-facial solar panels are transparent from their back. These produce some electricity from the rear sides of solar modules out of the reflected solar radiation. Most Bi-facial solar panels are made of monocrystalline modules but can be made of the polycrystalline modules also. These panels have approx. 30% more efficiency. These panels can be frameless also.

2.      Mono Perc Solar Panels ---This new technology for increasing efficiency of solar panels is called PERC (Passivated Emitter Rear Cell) This technology differs from conventional solar cell architecture In conventional technology of manufacturing solar cell rear side of silicon wafer carries a silver film for collecting the generated electrons. But in PERC technology a passivation layer is inserted between the Silicon wafer and back film whereby the heat of the solar cell is dissipated. Actually, Solar radiation when falls on solar panel carries heat also along with light photons and this heat decreases the efficiency of the solar panels with an increase in temperature. To overcome this difficult a passivation layer is provided on the backside of the solar module wafer where heat gets dissipated and certain efficiency gain is achieved through reduced heat absorption and increased generation from reflected radiation.

3.      Half-Cell Solar Panels --- These solar panels have solar cells cut in half to increase the performance and durability of the modules. Traditional Half cut solar panels will have double the number of cells. So when the solar cells are halved, their current is also halved, so resistive losses are lowered and the cells can produce a little more power. Moreover, mechanical stress is also lowered. and higher efficiency is achieved.

 

                            -          G P BOSE