Comparison of Photodetector Performances in a Color Filtered Spectrophotometer

Bocekci V. G. , Korkmaz H.

ACTA PHYSICA POLONICA A, vol.134, no.1, pp.329-331, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 134 Issue: 1
  • Publication Date: 2018
  • Doi Number: 10.12693/aphyspola.134.329
  • Title of Journal : ACTA PHYSICA POLONICA A
  • Page Numbers: pp.329-331


In this study, the performances of phototransistor and phototube that can be used as a photodetector in a spectrophotometer device are compared. The spectrophotometer used is at a basic level and filters out the desired wavelength from broadband spectrum light through the color filter. With color filter, 16 different wavelength colors can be obtained. The filtered light falls onto the photodetector after passing through the pure water solution. It has been determined that the performance of the phototransistor is much higher in the experiments in which the phototransistor and phototube are used separately. The results of the experiments show that both the output amplitude and the measurement resolution are higher.