Fabrication and characterization of Cu2O/TiO2thin film heterojunction with chemical bath deposition

Sarinah Pakpahan*, D. D. Risanti

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this study, heterojunction n-TiO2/ p-Cu2O has been fabricated. TiO2 was coated on FTO glass followed by Cu2O deposition by the chemical bath deposition method. In order to determine the effect of thickness on optical properties, as-annealed Cu2O thickness was varied, i.e. 10 cycles, 20 cycles, and 50 cycles. The physical properties of the copper oxide films were measured by an X-ray diffraction (XRD), a scanning electron microscope (SEM), a thermogravimetry analysis (TGA), and a UV-Vis spectroscopy. The XRD pattern of Cu2O showed almost pure Cu2O with some traces of CuO. The morphology of obtained Cu2O after 50 cycles indicated two distinguished morphologies, namely small edge- and corner truncated octahedra and larger all-corner truncated rhombic dodecahedra. While the selected annealing temperature was found withn the range of stable Cu2O. An increase in thickness as the cycles applied was calculated, but it resulted in no significant change in optical band gap.

Original languageEnglish
Title of host publicationEngineering Physics International Conference 2021, EPIC 2021
EditorsAyodya Pradhipta Tenggara, Nur Abdillah Siddiq, Sita Gandes Pinasti, Rizki Insyani, Jundika Candra Kurnia, Geetali Saha, Rasool Moradi-Dastjerdi
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735444843
Publication statusPublished - 22 May 2023
Event3rd Engineering Physics International Conference, EPIC 2021 - Yogyakarta, Virtual, Indonesia
Duration: 24 Aug 202125 Aug 2021

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference3rd Engineering Physics International Conference, EPIC 2021
CityYogyakarta, Virtual


  • Absorbance
  • CBD
  • Heterojunction
  • annealing
  • thickness


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