1 / 7

Electron poor materials research group

Electron poor materials research group. Group meeting Sept. 08, 2010 On the road to: Given Eg, m*, Chemical potential (i.e. carrier density), T, Etc. Predict ZT. Toy test problem. 1 conduction band, m*=m, Eg=1eV, isotropic band.

kylynn-cantu
Download Presentation

Electron poor materials research group

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electron poor materials research group Group meeting Sept. 08, 2010 On the road to: Given Eg, m*, Chemical potential (i.e. carrier density), T, Etc. Predict ZT.

  2. Toy test problem. 1 conduction band, m*=m, Eg=1eV, isotropic band. Amounts to a free electron gas, either a quantum gas if Ef>Eg, or a classical Boltzmann gas if Ef<<EG. Transport integrals: Tn = - Integral vk vk tau(k) (Ek- mu)**n (df(Ek)/dEk d3k Sigma= e**2 T0 Seebeck = -1/e T1 * T0**-1 Thermal Kappa (e-part)= 1/T (T2-T1*T1*T0**-1) All in mks unit. Results not reliable. Clear errors. Will fix. Plan – Work out on a sheet of paper the degenerate limit and classical limit.

  3. Tn vs. Chemical potential (Ef). Conduction band at 1eV.

  4. Electron density vs. Chemical Potential Ef. Density in m**-3 10**6 cm**-3

More Related