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We investigate charge carrier transport in poly-(3-hexylthiophene) films where sizable lateral photovoltaic effects are observed. Spatiotemporal measurements of the lateral photovoltage (LPV) using a local optical probe are carried out on device structures consisting of the semiconducting polymer film with a Schottky-type backcontact and a front pair of Ohmic contacts. We employ a spreading impedance approach in the context of a discrete circuit element model to obtain a quantitative understanding of the spatial dependence and the frequency response of the lateral photovoltage. An excellent agreement between theoretical model and experiment is found, leading to an understanding of the origin of LPV in organic systems.

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Multiplication is one of the most important fundamental operations in applications such as Digital Signal Processing and in ALU of the microprocessors. Since multiplication dominates the execution time and power consumption of most of the digital signal processing applications, high speed and low power multipliers are essential for next generation processors. This paper presents a detailed study of performance comparison of different types of multipliers such as Array Multiplier, Carry Save Multiplier, Wallace Tree Multiplier and Baugh Wooley Multiplier. The simulations were performed using 22nm predictive technology model with a supply voltage of 0.8V. Results show that baugh wooley multiplier is the fastest multiplier with the least delay.

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