Self-powered high-performance UV-vis-IR hybrid photovoltaic photodetector based on<i> Epilobium</i><i> angustifolium</i> L. (Onagraceae)

YILDIRIM F., KARAKAYA S., YUCA H., İNCEKARA Ü., AYDOĞAN Ş.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.979, 2024 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 979
  • Publication Date: 2024
  • Doi Number: 10.1016/j.jallcom.2024.173584
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Keywords: Organic-inorganic photodetector, Detectivity, Epilobium angustifolium, Self-powered
  • Ataturk University Affiliated: Yes

Abstract

Water-soluble Epilobium angustifolium (EA) extract was successfully coated on n -type Si single crystal by spin coating method to obtain EA/n-Si heterojunction device. UV-vis absorption and SEM analysis of the EA film were performed and the optical band gap was calculated as 2.71 eV. Electro-optical measurements of the fabricated device were performed and was found to give very good photoresponse in the UV-vis-IR regions. According to the experimental results, the EA/n-Si heterojunction showed not only high-performance photodetector properties but also self-driven properties under visible light as well as under UV and IR lights. At 150 mW/cm2 visible light, the device demonstrated excellent photovoltaic properties with Voc and Isc values of 0.40 V and 4.65 A, respectively. Under IR light, the responsivity, specific detectivity and NPDR reached 0.65 A/W and 1.41 x 1012 Jones, 4.23 x 108 W-1 respectively. Finally, a high-performance organic/inorganic photodetector in the broadband range has been successfully fabricated.