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569 results on '"Amiri I"'

169. PERFORMANCE ANALYSIS OF COPPER TIN SULFIDE, Cu2SnS3 (CTS) WITH VARIOUS BUFFER LAYERS BY USING SCAPS IN SOLAR CELLS.

Author

AMIRI, I. S., AHMAD, H., ARIANNEJAD, M. M., ISMAIL, M. F., THAMBIRATNAM, K., YASIN, M., and NIK ABDUL-AZIZ, N. M. A.

Subjects
*SOLAR cells, *ELECTRIC capacity, *BUFFER layers, *BAND gaps, *SOLAR energy
Abstract

This work examines the performance of the Cu2SnS3 (CTS) solar cells using the solar cell capacitance simulator (SCAPS) approach. The performance of the CTS solar cell was evaluated in terms of , , fill factor and efficiency. The structural parameter variation of CTS solar cell has been studied in terms of buffer and absorber layer thickness, bandgap, effect of temperature on total efficiency of the solar cell. Increasing the thickness of the CdS buffer layer decreases the efficiency of the simulated solar cell. A significant increase in the efficiency of the solar cell to 20.36% was obtained with a simulated buffer layer thickness to 10nm. In terms of the CTS absorber layer thickness, the efficiency of the solar cell increases by increasing the thickness of absorber layer. By setting the thickness of CTS to 4.0m, the efficiency obtained is 20.36%. It is observed that an increase in the bandgap can enhance the efficiency of the solar cell. In the performed simulation, an 0.9eV bandgap resulted in a 11.58% cell efficiency and a 1.25eV bandgap resulted in 21.96% cell efficiency. In terms of temperature, the efficiency of 20.36% was obtained at 300K, and as the temperature increases, cell efficiency will decrease. [ABSTRACT FROM AUTHOR]

Published
2017
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188. Visible Wireless Communications Using Solitonic Carriers Generated by Microring Resonators (MRRs)

Author

Amiri, I., Ariannejad, M., Ghasemi, M., Ismail, M., Azzuhri, S., Nafarizal, N., and Ahmad, H.

Abstract

Optical wireless communications (OWC) using soliton pulses in the visible range (600 nm) have been presented. Filtering the input Gaussian spectrum is performed via the microring resonators (MRRs), where the range of 499.25 THz to 500.05 THz frequency band could be generated. The MRRs are simulated using InGaAsP/InP semiconductor with InGaAsP core having refractive index of 3.31 surrounded by InP (n= 3.18). In this research, ten soliton pulses having FSR of 8 GHz were generated at the drop port within the range 499.61 to 499.69 THz frequency band. Here, the generated carriers from the MRRs are modulated with the optical transmitter output which is a laser with extinction ratio of 10 dB and linewidth of 10 MHz utilizing a Mach–Zehnder modulator as an intensity modulator based on an interferometric principle. The frequency and time domain of the transmitted ten soliton carriers through the transmission link are presented as well as the eye diagram.

Published
2018
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