ask mattrab Visit www.askmattrab.com for more academic resources.

Introduction to Semiconductors


Fb img 15840378689470846
Sushin Tiwari asked over 1 year ago

Why do holes have effective mass although being vacant energy states ?

Img 5443
Navneet Singh answered about 2 months ago

Hi Sushin,

In solid state physics, a particle's effective mass (often denoted {\textstyle m^{*}}{\textstyle m^{*}}) is the mass that it seems to have when responding to forces. Here, although we define and understand holes as vacancies, when they "move" towards the positive terminal under the electrical field, the concept of effective mass is introduced. 

Hope this helps.