Document Type : Original Research Article

Authors

• Sandra Onyeka Malumi ¹
• Temitope Malumi ²
• Mike Onyehachukwu Osiele ³
• Arthur Ekpekpo ³
• Imosobomeh L. Ikhioya ^{4, 5}

¹ Department of Physics, Delta State University of Science and Technology, Ozoro, Delta State, Nigeria

² School of Organizations, Systems, and People, University of Portsmouth, England, United Kingdom

³ Department of Physics, Delta State University, Abraka, Delta State, Nigeria

⁴ Department of Physics and Astronomy, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria

⁵ National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, 44000, Pakistan

Abstract

In this study, silver was used to doped TiO2 with Azadirachtaindica (neem), Annonamuricata (Soursop leaf), Manihotesculenta (cassava leaf), and Myrianthus arboreus (Coat button leaf) for DSSCs fabrication. The sensitized TiO2/silver with dye recorded an efficiency of 0.49%, 0.03%, 0.05%, and 0.22% for Azadirachtaindica (neem), Annonamuricata (Soursop leaf), Manihotesculenta (cassava leaf), and Myrianthus arboreus (Coat button leaf) respectively. The optical energy bandgap was observed to be 2.32 eV for TiO2 and 2.52 eV, 2.31 eV, 2.49 eV, and 2.51 eV for Neem, Soursop Cassava, and Coat button leaf dye. The structure of the cells is polycrystalline with a most outstanding peak at 2 theta angles of 30.375 o and 30.464 o corresponding to (200) therefore, secondary peaks were noticed at 2 theta angles of 24.891 °, 27.509 o, 32.915 o, 27.509 o, 35.296 o, 38.814 o, 43.152 o, 47.579 o, 53.231 o and 59.130 o for TiO2 and 26.116 °, 27.835 o, 32.667 o, 36.195 o, 39.802 o, 41.926 o, 47.173 o, 52.084 o, and 58.152 o for TiO2/Ag0.1/Neem leaf, TiO2/Ag0.1/soursop leaf, and TiO2/Ag0.1/cassava leaf which corresponds to (101), (004), (105), (211), (204), (116), (220), and (215) and (303) subsequently

Keywords

• Titanium dioxide
• Efficiency
• DSSCs
• FTO
• Dye

Main Subjects

• Envirentmentally Problems