Characteristic curves of the photodiode and phototransistor with Arduino

Yu, Chongxiu; Kim, Hee Ra; Ahn, Yu Jin; Kim, Jung Bog

doi:10.1088/1361-6552/ace8e8

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…The research problem addressed in this paper revolves around the inaccessibility and cost barriers associated with traditional I-V curve tracing methods for FET biosensor. Therefore, there exists a pressing need for an integrated electronic system that simplifies the I-V curve tracing process, making it more widely accessible and practical for sensor assessment [11]. The primary objective of this study is to design, develop, and validate an integrated electronic system tailored for FET biosensor assessment using I-V curve tracing.…”

Section: Introductionmentioning

confidence: 99%

Integrated electronic system for FET biosensor assessment based on current-voltage curve tracing

Bryantono,

Kamajaya,

Fitri

et al. 2024

IJEECS

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Field-effect transistor (FET) biosensors are pivotal in diverse applications, from environmental monitoring to healthcare diagnostics. Current-voltage (I-V) curve tracing is a powerful method for evaluating FET biosensor behavior, enabling comprehensive analysis of their FET biosensor characteristics. Traditional I-V curve tracing methods often require complex and expensive equipment, limiting their accessibility and practicality for routine sensor assessment. This study aims to develop and demonstrate an integrated electronic system for assessing FET biosensors using I-V curve tracing. The integrated electronic system uses readily available components, including microcontrollers, analog circuitry, and user-friendly software. We developed a compact, low-cost device that generates I-V curves for the FET biosensor. The integrated electronic system successfully generated I-V curves for various FET biosensors. The system demonstrated consistent, reliable performance, portability, and ease of use, making it a practical solution for routine sensor assessment. The average error in measurements using bipolar junction transistors (BJT) and metal-oxide-semiconductor field-effect transistors (MOSFETs) results in 2.62%, and measurements at different pH levels have a sensitivity of 21.6 mV/pH and a linearity of 0.9892. This innovation contributes to the advancement of FET biosensor technology. In the future, the developments should focus on ensuring their accuracy and reliability in various sensor fields.

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Section: Introductionmentioning

confidence: 99%

Integrated electronic system for FET biosensor assessment based on current-voltage curve tracing

Bryantono,

Kamajaya,

Fitri

et al. 2024

IJEECS

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Converting a power transistor to an optical transducer as an alternative to a commercial photo-detector for the construction of a simple and low-cost photometer

Bamdad,

Bamdad

2024

Phys. Educ.

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In this article, design and construction of a low-cost and simple homemade photometer for the determination of iron is described. Affordability and availability of required electronic components are two important factors that have been considered in the design of this photometer. An inexpensive low-wattage light-emitting diode was used as the light source, so there was no need to add a filter for wavelength selection. Instead of using a commercial phototransducer, a readily available NPN power transistor (2N3055) was modified as a proper substitute. To do this, the metallic cover of the transistor was carefully cut and removed so that the semiconductor junction of the transistor was revealed. It should be noted that this part of the transistor is photosensitive and can be used as a photo-sensing device. When the electromagnetic radiation strikes this photosensitive part, a small electric current is developed in the corresponding circuit. As this current is proportional to the radiation intensity, thus it is possible to use the uncovered transistor instead of a commercial phototransducer. The output electrical signal of this homemade phototransducer was amplified by a simple current-to-voltage converter and then measured with a digital voltmeter. As an application, the constructed photometer in this work was applied successfully to the assay of the iron content of vitamin tablets.

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Characteristic curves of the photodiode and phototransistor with Arduino

Abstract: A simple circuit with Arduino for determining characteristic curves of the photodiode and phototransistor is described. The experimental results show that the measured I–V curves of the photodiode and phototransistor are consistent with the datasheet.

Cited by 2 publications

References 6 publications

Integrated electronic system for FET biosensor assessment based on current-voltage curve tracing

Integrated electronic system for FET biosensor assessment based on current-voltage curve tracing

Converting a power transistor to an optical transducer as an alternative to a commercial photo-detector for the construction of a simple and low-cost photometer

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