Optimizing Solar Power: The Impact of N719 Dye Concentration on DSSC Efficiency with TiO2 Nanoparticles

Hardani Hardani (Department of Pharmacy, Politeknik Media Farma Husada Mataram, Mataram-83122 (Indonesia))
Ho Soonmin (Faculty of Health and Life Sciences, INTI International University, Putra Nilai-71800 (Malaysia))
Khaerus Syahidi (Department of Physics Education, Universitas Hamzanwadi, Selong-83611 (Indonesia))
Alpi Zaidah (Department of Natural Science Education, Institut Pendidikan Nusantara Global, Praya-85311 (Indonesia))
Sulistiyana Sulistiyana (Department of Chemsitry, Universitas Islam Negeri Mataram, NTB-83116 (Indonesia))
Alpiana Hidayatulloh (Faculty of Science, Engineering and Applied Sciences, Universitas Pendidikan Mandalika, Mataram-83125 (Indonesia))
Ahmad Fudholi (Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Selangor-43600 (Malaysia) Center for Energy Conversion and Conservation, National Research and Innovation Agency (BRIN), Jakarta-10340, (Indonesia))
Lily Maysari Angraini (Department of Physics, University of Mataram, Mataram-83116, (Indonesia) International Graduate Program of Molecular Science Technology, National Taiwan University, Taipei-10617 (Taiwan))

Journal of Multidisciplinary Applied Natural Science
Vol. 5 No. 1 (2025): Journal of Multidisciplinary Applied Natural Science

Dye-sensitized solar cells (DSSC) are photoelectrochemical, alternative energy source devices that convert light energy into electricity. In this study, DSSC with various concentrations (0.1, 0.5, and 1.0 mM) of N719 dye have been successfully prepared using simple steps. The X-ray diffraction results of the TiO2 film showed that it is polycrystalline with an anatase phase (tetragonal system) having a crystallite size of about 20 nm. The absorbance spectrum of the TiO2 film and N719 dye at various concentrations was recorded by ultraviolet-visible (UV-Vis) spectrophotometer. The bandgap energy of the TiO2 film calculated by Tauc’s formula was ~3.1 eV. The DSSC prepared using the N719 dye concentration of 1 mM achieved the highest conversion efficiency (η) of 0.298 %, respectively. Subsequently, the enhancement in efficiency was ~86 % compared with the conversion efficiency of DSSC prepared with an N719 dye concentration of 0.1 and 0.5 mM.