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光伏电池是怎么发电的?

2015-06-18 11:19:31??????点击:
光伏电池是怎么发电的?
深圳宇飞太阳能技术支持:    光伏电池是怎么发电的?你会不会把他想的很负责很深奥,其实光伏电池是一种具有光-电转换特性的半导体器件,它直接将太阳辐射能转换成直流电,是光伏发电的最基本单元。光伏电池特有的电特性是借助于在晶体硅中掺入某些元素(例如:磷或硼等),从而在材料的分子电荷里造成永久的不平衡,形成具有特殊电性能的半导体材料。在阳光照射下,具有特殊电性能的半导体内可以产生自由电荷,这些自由电荷定向移动并积累,从而在其两端形成电动势,当用导体将其两端闭合时便产生电流。这种现象被称为“光生伏打效应”,简称“光伏效应”。

太阳能发电原理图
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