扩散到结界面处的少数载流子空穴会被内建电场拉向p区，而扩散到结界面处的

扩散到结界面处的少数载流子空穴会被内建电场拉向p区，而扩散到结界面处的少数载流子电子会被内建电场拉向n区，结区内产生的电子空穴对会被内建电场分别拉向n区和p区。在外电路处于开路状态的情况下，这些光生电子和空穴会积累在pn结附近，结果使P区获得附加正电荷，n区获得附加负电荷，在pn结上就会产生光生电动势。这一现象称为光生伏打效应，也称光伏效应，太阳能电池就是根据光伏效应工作的。

扩散到结界面处的少数载流子空穴会被内建电场拉向p区，而扩散到结界面处的少数载流子电子会被内建电场拉向n区，结区内产生的电子空穴对会被内建电场分别拉向n区和p区。 在外电路处于开路状态的情况下，这些光生电子和空穴会积累在pn结附近，结果使P区获得附加正电荷，n区获得附加负电荷，在pn结上就会产生光生电动势。 这一现象称为光生伏打效应，也称光伏效应，太阳能电池就是根据光伏效应工作的。

The minority carrier holes diffused to the junction surface will be pulled to the P-region by the built-in electric field, while the minority carrier electrons diffused to the junction surface will be pulled to the N-region by the built-in electric field, and the electron hole pairs produced in the junction area will be pulled to the N-region and the P-region by the built-in electric field respectively. When the external circuit is in an open circuit state, these photogenerated electrons and holes will accumulate near the PN junction, resulting in additional positive charge in the P-region and additional negative charge in the N-region, and photogenerated electromotive force on the PN junction. This phenomenon is called photovoltaic effect, also known as photovoltaic effect. Solar cells work according to photovoltaic effect.<br>