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19881206

新虫 (小有名气)

[求助] 只有金属才有功函数(work function)吗? 已有2人参与

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马踏冰河

铁杆木虫 (著名写手)

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感谢参与,应助指数 +1
19881206: 金币+2, 有帮助 2013-06-19 19:55:17
sddtc888: 金币+1, 谢谢参与,欢迎常来! 2013-06-20 10:40:29
19881206: 金币+2 2013-06-21 20:45:59
不是   半导体绝缘体都有   功函数就是电子被打电离所需最小能量
2楼2013-06-19 10:21:30
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naobaijin

铁虫 (初入文坛)

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电离能比功函数大。电子从内部到表面需要的能量是功函数,从内部到无穷远所需要的能量是电离能。
3楼2018-04-16 08:59:07
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R2BBr

木虫 (知名作家)


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????????work function????????????ó?????????????????????????????????ЙC?????????????е??????? (e.g. ??????????????????????? PEI .... )
https://en.wikipedia.org/wiki/Work_function
In solid-state physics, the work function (sometimes spelled workfunction) is the minimum thermodynamic work (i.e. energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Here "immediately" means that the final electron position is far from the surface on the atomic scale, but still too close to the solid to be influenced by ambient electric fields in the vacuum. The work function is not a characteristic of a bulk material, but rather a property of the surface of the material (depending on crystal face and contamination).
4楼2018-10-25 22:08:21
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