Estimation of carrier mobility at organic semiconductor/insulator interface using an asymmetric capacitive test structure | Zendy

Rajesh Agarwal | Zendy; Ashish Agarwal | Zendy; B. Mazhari | Zendy

Open Access

Estimation of carrier mobility at organic semiconductor/insulator interface using an asymmetric capacitive test structure

Author(s) -

Rajesh Agarwal,

Ashish Agarwal,

B. Mazhari

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4948432

Subject(s) - organic semiconductor , capacitance , pentacene , materials science , capacitive sensing , insulator (electricity) , optoelectronics , transistor , admittance , electron mobility , semiconductor , voltage , differential capacitance , electronic engineering , electrical engineering , electrode , chemistry , engineering , electrical impedance

Mobility of carriers at the organic/insulator interface is crucial to the performance of organic thin film transistors. The present work describes estimation of mobility using admittance measurements performed on an asymmetric capacitive test structure. Besides the advantage of simplicity, it is shown that at low frequencies, the measured capacitance comes from a large area of channel making the capacitance-voltage characteristics insensitive to contact resistances. 2-D numerical simulation and experimental results obtained with Pentacene/Poly(4-vinyphenol) system are presented to illustrate the operation and advantages of the proposed technique

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