https://wiki.yanding.com/ 2026-05-29T17:03:24+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-05-29T05:24:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E6%88%90%E5%83%8F%E7%B3%BB%E7%BB%9F:%E7%B3%BB%E7%BB%9F%E6%9E%84%E9%80%A0%E5%8F%8A%E5%8A%9F%E8%83%BD:%E5%9B%BE%E5%83%8F%E4%BC%A0%E6%84%9F%E5%99%A8:pn%E7%BB%93&rev=1780032282&do=diff PN结 1.定义 PN结是由P型半导体和N型半导体紧密接触、在交界面形成的微观结构。它具有单向导电性，是图像传感器实现光电转换的核心基础。 图1：PN 结的物理结构与电路符号示意图