Visible Light Communication System Using an Organic Bulk Heterojunction Photodetector

Abstract

A visible light communication (VLC) system using an organic bulk heterojunction photodetector (OPD) is presented. The system has been successfully proven indoors with an audio signal. The emitter consists of three commercial high-power white LEDs connected in parallel. The receiver is based on an organic photodetector having as active layer a blend of poly(3-hexylthiophene) (P3HT) and phenyl C61-butyric acid methyl ester (PCBM). The OPD is opto-electrically characterized, showing a responsivity of 0.18 A/W and a modulation response of 790 kHz at −6 V.

A Low-Cost IEEE 802.15.7 Communication System Based on Organic Photodetection for Device-to-Device Connections

“…So, in this paper, we show a low-cost system based on organic photodetectors using ATmega328 (Elche, Spain), an Atmel 8-bit AVR RISC-based microcontroller, and a frame based on OOK with Manchester coding type 1 to support an OWPAN. Organic photodetectors (OPDs) have been tested for VLC with positive results [11][12][13][14][15]. Our organic photodetector is able to transmit text via VLC.…”

P3HT-based visible-light organic photodetectors using PEI/PAA multilayers as a p-type buffer layer

“…Moreover, the D* of the device using (PEI/PAA) 2 is 10 times or more than that of the device using PEDOT:PSS. A comparison of these results with those of an organic-halide perovskite photodetector reported in the literature 20,37 reveals that the device using (PEI/PAA) 2 exhibits a similar detectivity (>10 12 Jones at À1 V) in the visible-light region. In addition, the performance of the device with (PEI/ PAA) 2 achieved high D* and simultaneous suppression of the dark current compared to a similar reported device with a P3HT-based photodetector (Table S2 †).…”

“…[5][6][7] In particular, polymer-fullerene blends have attracted great interest as active materials in organic photodetectors (OPDs) in the visible-light region, 8,9 and poly(3-hexylthiophene-2,5-diyl): [6,6]-phenyl-C 61 -butyric acid methyl ester (P3HT:PC 60 BM) is widely used as a photoactive material. [10][11][12][13] With these materials, a p-type/n-type buffer layer is inserted between the active layer and the electrodes to improve the device performance. Some devices are operated under reverse bias to achieve the required response speed and bandwidth for certain applications such as line scan cameras (100 kHz) and optical communication (1 MHz).…”

Microfluidic Biosensor Array with Integrated Poly(2,7-Carbazole)/Fullerene-Based Photodiodes for Rapid Multiplexed Detection of Pathogens

“…The responsivity ( R ) of the PCDTBT:PC 70 BM photodetector was obtained in terms of external quantum efficiency using a 150 W xenon lamp, an Omni-λ monochromator (Zolix Instruments Co. Ltd., Beijing, China), a Keithley 2600A SMU, and a calibrated silicon photodiode (Hamamatsu Photonics K.K., Hamamatsu, Japan). R was thus determined from the following relation [35]: $R=\frac{\eta \lambda q}{hc}$where η is the external quantum efficiency, λ represents the incident light wavelength, q denotes the elementary charge constant, h is the Planck constant and c is the light velocity.…”