Recent content by r.sahebi

http://physics.stackexchange.com/questions/156708/can-the-relative-permittivity-of-a-semiconductor-material-be-lower-than-1 To measure the relative permittivity of a p-type semiconductor material (a metal phthalocyanine ) , a M-S-M structure was made by thermal evaporation method. The...

thanks a lot.

yes, that's my wrong can you tell me how i can have it?

hi to everyone L=T-V as you know it is the lagrangian equation the effective Lagrangian of the electromagnetic field is given by following relation in gaussian units. L=(1/8pi) (E^2-B^2) how is must calculate this relation? (the energy density of electromagnetic fields is given by u=(1/8pi)...

σ_ac=σ_tot-σ_dc ------------------- in CBH model σ_ac=((π^2 N^2 ε^*)/24) [(8e^2)/(ε^* W_M )]^6 (ω^s/τ^β ) s=1-β=1-(6k_BT/W_M) ------------------------------------------------------------------ slope of Ln(σ) vs. ω plot give us the value of "s" slope of s vs. T plot give us...

i just say thank you Mr Bridge I've found the answer to my question

we want to characterize an organic semiconductor material (synthesized in our laboratory for first time). we study DC and AC electrical and optical properties of this material... one of my friends referred me to an article of Dr Saleh from Al-Quds University. now i can complete my...

AC electrical characterization what did you type (Math Processing Error) ?

Hi Mr Simon Bridge this is an experimental work we use a LCR meter to find the conductivity that may be obey from the CBH equation the values of ε and ω are clear but we don't know anything about the value of N How can i use your suggested relation? Thanks

what is the value of "N" ? Hi to everyone in the following equation (electrical conductivity in correlated barrier hopping (CBH) model), N is the density of localized states.. I read these matter in some papers but anyone has reported a value for it. how i must determine this value...