Mar 21, 2007 #1 barath_87 Full Member level 3 Joined Feb 7, 2006 Messages 183 Helped 18 Reputation 36 Reaction score 6 Trophy points 1,298 Location India Activity points 2,361 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
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
Mar 21, 2007 #2 T truebs Full Member level 5 Joined Jan 21, 2005 Messages 310 Helped 22 Reputation 44 Reaction score 4 Trophy points 1,298 Location Asia Activity points 2,980 Check out :- Also search the forum , there are already plenty of posts on this issue.
Mar 24, 2007 #3 M mannnish Full Member level 3 Joined Aug 6, 2006 Messages 154 Helped 5 Reputation 10 Reaction score 2 Trophy points 1,298 Activity points 2,235 due to higher effective mass of the holes , hole mobility is typically significantly lower than electron mobility.
due to higher effective mass of the holes , hole mobility is typically significantly lower than electron mobility.
Mar 25, 2007 #4 A A.Anand Srinivasan Advanced Member level 5 Joined Oct 15, 2005 Messages 1,792 Helped 257 Reputation 514 Reaction score 39 Trophy points 1,328 Location India Activity points 10,678 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....
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....
May 11, 2007 #5 saubhik Full Member level 3 Joined Apr 27, 2007 Messages 161 Helped 18 Reputation 36 Reaction score 11 Trophy points 1,298 Location India Activity points 2,210 because holes have greater effective mass wrt electrons , and mobility is inversly proportional to mass ,i.e. if mass increases mobility decreases .
because holes have greater effective mass wrt electrons , and mobility is inversly proportional to mass ,i.e. if mass increases mobility decreases .