Tuning the optical band Gap of pure TiO2 via photon induced method

Graphene oxide doping in tropical almond (terminalia catappa L.) fruits extract mediated green synthesis of TiO2 nanoparticles for improved DSSC power conversion efficiency

“…The Kubelka−Munk function, F (R ∞ ), is given by the expression F (R ∞ ) = (1-R ∞ ) 2 /2R ∞ , where R ∞ is the reflectance. In this work, the bandgap energy was calculated by fitting the data in Tauc plot (F (R ∞ ).hc/λ) ½ vs hc/λ assuming an indirect allowed transition bandgap energy [ 47 , 48 ] and the results are depicted in Fig. 4 .…”

Development of dye-sensitized solar cells STEAM learning prototype for supporting educational for sustainable development

“…The excited electrons will be injected into the semiconductor's conduction band, where Titanium dioxide (TiO 2 ) is often used because it has a wide band-gap that will accelerate the oxidation process of dye molecules [12]. This TiO 2 acts as an electron acceptor or collector.…”

A review on the inference of doping TiO2 with metals/non-metals to improve its photocatalytic activities

“…These properties of anatase TiO2 are the reasons for its use for cancer therapy, air/water purification, self-cleaning of antibacterial materials, and solar cells [4]. The performance of TiO2 in absorbing sunlight depends on its band gap and richness in oxygen [5]. One of the drawbacks of TiO2 for photocatalytic activities is its bandgap.…”

“…Doping the TiO2 with some metals and/or nonmetals will help to modify its bandgap to make it utilize visible light that accounted for almost 45% of the solar energy [6]. To increase the lightabsorbing capacity of TiO2 there is a need to make it rich in oxygen and/or modifies the bandgap by doping with a precursor modification [5]. Doping with some metals/nonmetals can reduce the bandgap from 3.2 eV to even 1.3 eV or thereabout (depending on the metal/nonmetal used) that utilizes visible light.…”