Thermal Annealing Impact on Optical Properties of Spin-coated P3HT: CdS Thin Film


  • Nabila Anis Zakaria Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia
  • Mohd Syahriman Mohd Azmi Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia
  • Fatin Hana Naning Department of Basic Science and Engineering, Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia, 97008 Bintulu, Sarawak, Malaysia
  • Rifat Capan Department of Physics, Faculty of Science, University of Balikesir, Balikesir, Turkiye
  • Syed Abdul Malik Syed Mohamad Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia



Thermal annealing, P3HT, CdS nanoparticles, optical properties, spin coating


Polymers are flexible materials that can be easily processed and are formed into a thin film by several methods such as spin-coating, dip-coating, film-casting, and printing. The spin coating method has been extensively utilized in fabricating solution-prepared organic/inorganic electronic devices, this technique is positively efficient in generating thin film apart from being a flexible method to execute. In this study, poly(3-hexylthiophene) (P3HT) material is selected as polymer and cadmium sulphide (CdS) as nanoparticles to produce a hybrid nanocomposite thin film through the process spin-coating method. The P3HT and cadmium ion solution were used to fabricate a thin film onto a quartz glass substrate at a spin speed of 500 rpm for 10 seconds. This spin-coated thin film was heated at different temperatures such as 40°C, 80°C, 120°C, and 160°C for optical properties using a UV-Vis spectrophotometer. The UV-Vis absorption spectra of P3HT: CdS indicated absorption peaks in the UV region, which were ascribed to the band gap of the P3HT: CdS thin film. Our results showed that the optical properties of the P3HT: CdS be contingent on the annealing temperature. The film at room temperature yielded a band gap value of 1.98 eV, at 40°C it resulted in 1.99 eV. The band gap value was increased when annealed at 80°C with 2.02 eV. Annealing temperatures were then raised to 120°C and 160°C, leading to band gap values of 3.11 eV and 2.80 eV respectively.


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How to Cite

Zakaria, N. A., Mohd Azmi, M. S., Naning, F. H., Rifat Capan, & Syed Mohamad, S. A. M. (2023). Thermal Annealing Impact on Optical Properties of Spin-coated P3HT: CdS Thin Film. Journal of Science and Mathematics Letters, 11, 81–87.




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