Bandwidth Characterization of c-Si Solar Cells as VLC Receiver under Colored LEDs

Conference paper (2023)

Authors

Y. Zhou Photovoltaic Materials and Devices - EEMCS
Aya Ibrahim Student
M. Muttillo Photovoltaic Materials and Devices - EEMCS
P. Manganiello Photovoltaic Materials and Devices - EEMCS
H. Ziar Photovoltaic Materials and Devices - EEMCS
O. Isabella Photovoltaic Materials and Devices - EEMCS
Research Group
Photovoltaic Materials and Devices (EEMCS) (TU Delft)
Copyright: © 2023 Y. Zhou, Aya Ibrahim, M. Muttillo, P. Manganiello, H. Ziar, O. Isabella
DOI: https://doi.org/10.23919/SpliTech58164.2023.10193624
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Published Date

2023

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Photovoltaic Materials and Devices

Abstract

This paper presents the fundamental study on the relationship between LED light sources and the performance of solar cell as receivers in visible light communication (VLC) links. Here, different colors of LEDs are modulated with a sinusoidal signal, and the bandwidth of the VLC system based on various c-Si PV architectures is characterized at different bias voltages. The preliminary results show that the bandwidth of such VLC system is highly influenced by the bias voltage, where higher bias voltage leads to lower bandwidth. This means that there is a trade-off between energy harvesting and communication performance when solar cells are used as VLC receivers. Meanwhile, we also observed that the bandwidth decreases as the LED irradiance level increases, and the color of LED (currently red and blue LEDs are characterized) does not pose a significant impact on the bandwidth. The highest bandwidth is found at 50 kHz for a VLC system using a 6-in TOPCON solar cell under 100 W/m2 with 100 mV bias voltage.

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