The key technology of solar photovoltaic power generation

The key technology of solar photovoltaic power generation is solar battery technology. In today's solar cell has developed to the second generation, but at present the most widely used are the first generation - — Crystalline silicon cells, accounting for 2003 global solar photovoltaic power generation ( Hereinafter referred to as PV) Battery production

the key technology of solar photovoltaic power generation is solar battery technology. In today's solar cell has developed to the second generation, but at present the most widely used are the first generation - — Crystalline silicon cells, accounting for 2003 global solar photovoltaic power generation ( Hereinafter referred to as PV) Battery production 88. 73%. The first generation of solar cells, crystalline silicon solar cells, and is divided into two kinds of monocrystalline silicon and polycrystalline silicon. Crystalline silicon battery industrialization product efficiency generally for 13 - 15%, due to the production process makes the battery production cost is higher, sales price for the 3 - 4美元/ Wp。 The second generation of solar cells, thin film solar cells, mainly including amorphous silicon ( a - Si) , cadmium telluride ( CdTe) And copper indium ( Gallium) Selenium ( Cl( O) Se) 。 Its cost is lower than the first generation, and can greatly increase the panel manufacturing area, but not as good as the first generation of efficiency, the stability of amorphous silicon efficiency is 10%. With the enlargement of the PV market, the growth of thin film photovoltaic cells will accelerate. Here looking forward to the first three generations of solar cells, they should have the following characteristics: thin film, high efficiency, abundant raw materials and non-toxic. Is expected to achieve the third generation solar cell efficiency include: laminated battery, take a photovoltaic cell, collision ionization, photon conversion, hot carrier batteries, LED street light, thermal ionization, thermal photovoltaic cells, etc.