檢視激子的原始碼

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|<center>'''激子'''<br><img
src=" https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fbkimg.cdn.bcebos.com%2Fpic%2F359b033b5bb5c9ea946df832dd39b6003bf3b341&refer=http%3A%2F%2Fbkimg.cdn.bcebos.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1669873809&t=e1e3ed736479f9ae4b50b0fdece01025" width="280"></center><small>  圖片來自baidu百度</small> 
|}
物理概念
'''激子'''是一种[[准粒子]]。激子是[[绝缘体]]或[[半导体]]中[[电子]]和[[空穴]]由其间库仑相互作用而结合成的一个[[束缚态]]系统。 <ref>[https://baike.baidu.com/reference/3517720/5795oCNP4yEDqTDdF62P1zMWn9WOxjPOWlW4HmT2v65GIFDqDWMQh5gvdozAjXcYIPBlerZgzRTrOPkWbyf_72FmWLbSDxo  术语在线，引用日期2022-06-23] </ref> 
在半导体中，如果一个电子从满的价带激发到空的导带上去，则在价带内产生一个空穴，而在导带内产生一个电子，从而形成一个电子-空穴对。空穴带正电，电子带负电，它们受到库仑力而互相吸引，在一定的条件下会使它们在空间上束缚在一起，这样形成的复合体称为激子。激子寿命很短，最终会消失。

*中文名：[[激子]]

*外文名:exciton

*原    理:吸收光子在固体产生的束缚的电子-空穴结合体