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In this report, the hole-only device was fabricated in order to study the carrier mobility of N,N′-diphenyl-N,N′bis(1,1′-biphenyl)-4,4′-diamine through the space charge limited current model. Then the capacitance spectrum and the corresponding imaginary part of impedance spectrum were measured. When the frequency-dependent mathematical physics equations were directly used to fit the capacitance spectrum,...
As a powerful method for electrical measurement, impedance spectroscopy and admittance spectroscopy methods began to receive more and more attention in organic electronics research scholars. It demonstrates outstanding advantages especially in the measurement of the mobility of the charge carriers. In this paper, the hole mobility of N,N′-diphenyl-N,N′bis(1,1′-biphenyl)-4,4′-diamine (NPB) was studied...
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