The photodetection properties of a ruthenium electro-optic device for organic material-based device industry

Gencer Imer A., Dere A., Kaya E., Al-Sehemi A. G., DAYAN O., Al-Ghamdi A. A., ...More

Optical Materials, vol.142, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 142
  • Publication Date: 2023
  • Doi Number: 10.1016/j.optmat.2023.114085
  • Journal Name: Optical Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Computer & Applied Sciences, INSPEC
  • Keywords: Illumination effect, Photodiode, Ru(II)-Pydim complex, Transient measurement
  • Van Yüzüncü Yıl University Affiliated: Yes


The electrical properties and effect of illumination on the photodetection properties were investigated for the fabricated device with Ru(II)-pydim complex interface layer. The Ru(II)-pydim interface was deposited by spin coating technique on a p-silicon substrate. The electrical and optoelectrical parameters of photodiode were analyzed via the current-voltage (I–V), capacitance/conductance-voltage (C/G-V) measurements under dark and different illumination power. The fabricated device has good electrical parameters such as the rectification ratio of 2.726 × 104, the ideality factor of 1.328, and barrier height of 0.805 eV under the dark condition. The current values of the device with Ru(II)-pydim interface at reverse bias were strongly dependent on the illumination intensities, confirming its photoconduction behavior. The I–V measurements under different solar illuminations present that the electro-optic device with Ru(II)-pydim complex as an interface has good photodiode parameters with the responsivity of 131 mA/W, and the detectivity of 1.63 × 1011 Jones at 100 mW/cm2. The photo transient measurements demonstrate that the Ru(II)-pydim complex based photodiode presents the desired photo-switching property. Therefore, the prepared Ru(II)-pydim based device can be used for electro-optic and photonic applications, particularly in the rapidly developing organic material-based device industry.