Study on inertial characteristics of photoresistors in a physical workshop

Authors

  • А.Н. Андреев
  • О.Н. Андреева

DOI:

https://doi.org/10.30837/rt.2020.3.202.21

Keywords:

photoresistor, photoconductivity, internal photoelectric effect, photoresistive effect nonequilibrium carriers, lifetime, lux-ampere characteristic, microcontroller, frequency synthesizer.

Abstract

The article describes a measuring complex based on the 32-bit STM32F103VET6 microcontroller for studying the lux-ampere (light), frequency and inertial characteristics of a photoresistor with different laws of recombination of nonequilibrium charge carriers arising under the influence of light. The developed complex is connected to a personal computer (smartphone) and allows to analyze the rise and fall edges of the photoresistor current, as well as to determine the lifetime of excess charge carriers at different illumination levels. Unlike traditional methods for measuring the parameters of photoresistors operating in a dynamic mode, the proposed measuring complex does not use an oscilloscope and a separate modulator of the luminous flux (generator or light interrupter), this made it possible to significantly reduce the size and cost of the complex, as well as automate the measurement process. To determine the frequency response of the photoresistor, it is proposed to use a frequency synthesizer, which allows, together with a digital-to-analog converter of the microcontroller, to form an amplitude-modulated light flux of the required frequency and modulation depth. The complex described in the work can be connected to the Internet using a Wi-Fi module based on an ESP8266 microcontroller, which allows conducting research in a remote mode. It is also possible to determine the parameters of the photoresistor at different values of the load resistance.

References

Marinho F. Measuring light with light-dependent resistors: an easy approach for optics experiments / F. Marinho, C.M. Carvalho, F.R. Apolinário, L. Paulucci // European Journal of Physics. 2019. Vol.40, No.3.P. 035801–035814.

Jana A.K. An optical probe for liquid–liquid two-phase flows / A.K. Jana, T.K. Mandal, D.P. Chakrabarti, G. Das, P.K. Das // Measurement Science and Technology. 2007. Vol.18, No.5. P. 1563–1575.

Xiao-Yuan W. Implementation of an analogue model of a memristor based on a light-dependent resistor / W. Xiao-Yuan, A.L Fitch, H.H.C. Iu, V. Sreeram, W.G. Qi // Chinese Physics B. 2012. Vol. 21, No.10. P. 108501-1–108501-8.

Богданов Э.О. Фоторезисторы и их применение. Ленинград : Энергия, 1978. 144 с.

Sanga R. Design and development of a quasi-digital sensor and instrument for water turbidity measurement / R. Sanga, M. Sivaramakrishna, G.P. Rao // Measurement Science and Technology. 2019. Vol.30, No.11. P.115106.

Flores-Fuentes W. Comparison between Different Types of Sensors Used in the Real Operational Environment Based on Optical Scanning System / W. Flores-Fuentes, J.E. Miranda-Vega, M. Rivas-Lopez, O. Sergiyenko, J.C. Rodríguez-Quiñonez // Sensors. 2018. Vol.18, issue 6. P.1684–1689.

Yunianto M. Fiber optic sensor based on reflectivity configurations to detect heart rate / M. Yunianto, A. Marzuki, R. Riyatun, D. Lestari // Journal of Physics: Conference Series. 2016. Vol.776. P. 012110–012116.

Готра З.Ю. Фізичні основи електронної техніки / З.Ю. Готра, І.Є. Лопатинський, Б.А. Лукіянець та ін. Львів : Бескид Біт, 2004. 880 с.

Епифанов Г.И. Твердотельная электроника / Г.И. Епифанов, Ю.А. Мома. Москва : Высш. шк., 1986. 304 с.

Шалимова К.В. Физика полупроводников. Москва : Энергия, 1991. 416с.

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How to Cite

Андреев, А., & Андреева, О. (2020). Study on inertial characteristics of photoresistors in a physical workshop. Radiotekhnika, 3(202), 189–195. https://doi.org/10.30837/rt.2020.3.202.21

Issue

No. 202 (2020): Radiotekhnika

Section

Articles

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