We report novel photovoltaic (PV) switching based on the low exciton-binding energy property of an organic heptazole (C26H16N2) thin film after fabrication of an heptazole-based Schottky diode. The Schottky diode cell displayed an instantaneous voltage of 0.3 V as an open circuit voltage (VOC) owing to the work function difference between the Schottky and ohmic electrode under deep blue illumin...

KANJ, HOUSSAM. Circuit-Level Modeling of Laser Diodes. (Under the direction of Dr. Michael B. Steer.) In all semiconductor laser diodes the thermal, electrical, and optical characteristics are integrally related. In this work, a new approach to the modeling of laser diodes that integrates electrical, optical and thermal effects is presented. Also, it is demonstrated how physical device models b...

SiC Schottky Barrier diodes (SiC-SBD) are known to oscillate/ring in the output terminal when used as free-wheeling diodes in voltage source converters. This ringing is due to RLC resonance between the diode capacitance, parasitic resistance and circuit stray inductance. In this paper, a model has been developed for calculating the switching energy of SiC diodes as a function of the switching r...

The behavior of a photovoltaic solar array is investigated by performing a simulation in Simulink (MATLAB). The modeling of the system is based on the one diode model (in which the solar cell’s equivalent circuit is composed by a current source, diode, series and parallel resistance). The simulation results show how the series and parallel connection of the solar cells have a direct impact unde...

The output voltage of the traditional CUK PFC converter is negative, and an additional inverting amplifier circuit needed, which increases volume cost converter. A new type bridgeless topology proposed in this paper, makes have a positive without need circuit, has advantages simple control, high efficiency, low cost. Through optimization, one input capacitor reduced, two diodes are converted fr...

I A reliable device model is crucial for the development d implementation of a circuit design. However, the sation of a high quality model requires a significant lount of timeand money. The software package presented this paper seeks to minimize the timeand money invested the realization of a high quality model for SiC Schottky, erged PiN Schottky, and PiN Power diodes based on cNutt and Mantoo...

This paper presents a method to characterize the excess noise ratio (ENR) of an unmatched avalanche noise diode for application as an on-wafer noise source. It is based on the determination of a broadband device noise circuit-model from its measured reflection coefficient and noise powers. Measured ENR is used to calibrated a noise receiver up to 40 GHz. © 2003 Wiley Periodicals, Inc. Microwave...

Chaos is exhibited in the diode resonator circuit due to the unrecombined charges that cross the p-n junction when the diode is in the forward bias mode. When the diode switches biases, the charges diffuse back to their original plate making the diode act as a capacitor. The larger the forward current, the greater the amount of charges that cross the junction and the longer the system will need...

A versatile beamstop with an integrated sensor has been developed at the Stanford Synchrotron Radiation Laboratory (SSRL) using non-specialized components. A diameter of 1.5 mm was achieved using a commercial subminiature surface mount PIN diode (Phillips BAP64) molded into a tungsten epoxy composite cup. The cup is supported on a thin fiberglass arm with printed circuit traces to transmit the ...