75 research outputs found
Charge carrier induced barrier height reduction at organic heterojunctions
In order to provide an accurate theoretical description of current density
voltage (J-V) characteristics of an organic heterojunction device over a wide
range of electric fields at various temperatures, it is proposed that an
accumulation of charge carriers at the heterojunction will lead to a reduction
in the barrier height across the heterojunction. Two well-known hole
transporting materials, 4,4,4-Tris(N-3-methylphenyl-N-phenyl-amino)
triphenylamine (MTDATA) and
N,N-diphenyl-N,N-bis(1-naphthyl)(1,1-biphenyl)-4,4diamine (NPB) were used to
fabricate unipolar heterojunction devices. It is found that the J-V
characteristics depends strongly on applied bias. The simulated J-V
characteristics of the heterojunction device, with the modified injection
model, are found to be in excellent agreement with the experimental data.Comment: 4 pages, 4 figures, published in Phys. Rev. B Vol. 78, No. 8,
http://link.aps.org/abstract/PRB/v78/e08130
Temperature dependance of the mechanical properties of an RF MEMS switch
NRC publication: Ye
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