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    Why is mobility of holes less than electrons?

    Movement of holes is nothing but due to the relative motion of electrons in the valence band.Then why is their mobility lower than electrons?

    Thanks in advance

    •   Alt21st March 2007, 02:04

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    Re: Why is mobility of holes less than electrons?

    Check out :-


    http://www.edaboard.com/viewtopic.php?t=141347


    Also search the forum , there are already plenty of posts on this issue.



    •   Alt21st March 2007, 07:52

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    Re: Why is mobility of holes less than electrons?

    due to higher effective mass of the holes , hole mobility is typically significantly lower than electron mobility.



    •   Alt24th March 2007, 16:50

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    Re: Why is mobility of holes less than electrons?

    the mobility of electrons is due to their movement in the conduction band
    though the mobility of holes is just the movement of electrons it is in the valence band and has a lot of oppositions and hence is lower compared to the electrons....



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    Re: Why is mobility of holes less than electrons?

    because holes have greater effective mass wrt electrons ,

    and mobility is inversly proportional to mass ,i.e. if mass increases mobility decreases .



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