Dear Pazoki, You can calculate work function for certain surfaces in pp.
Best Wishes Jia On Sat, Feb 19, 2011 at 8:04 AM, meysam pazoki <m_pazoki at physics.sharif.edu> wrote: > > > ---------- Forwarded message ---------- > From: meysam pazoki <meysam.pazoki at gmail.com> > Date: Sat, Feb 19, 2011 at 4:33 PM > Subject: Re: Fermi Energy Caculation > To: pw_forum at pwscf.org > > > Dear xirainbow > Thanks for your comment. Each semiconductor have a fermi energy level. > The exact value of fermi energy (relative to vaccum level) depicts that the > contact of this semiconductor with Au(for example) is Schottky or ohmic. > Or for example when this semiconductor is in contact with a Red/Ox > electrolyte ,what is the length of double layer ? > This is duo to when a metal and a semiconductor are in contact, in > equilibrium the fermi energy of two systems should be identical(Fermi energy? > (with good approximation) is equal to chemical potential. Chemical potential > is energy of adding 1 electron to the system.In equilibrium there is no > electronic current between two parts. ) > But when you work with two samples in contact to each other you need to know > the value of fermi energy relative to vaccum. > Best wishes > meysam > > > > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum > -- Jia Chen
