Review on Recent Advances in Titanium Dye Oxide Nanoparticles for Dye Sensitized Solar Cell Applications.

Abstract

Alternate energy source becomes a crucial for green energy solution against ever increasing demand. Dye Sensitized solar cell is another promising option toward green energy providing opportunity to explore natural dye extracts from plants. This review explores recent developments in the field of Dye Sensitized solar cell technology specifically with sensitizer synthesized from plants which are also found in India. Anthocyanin, betalain, chlorophyll and carotenoids are among the most common plant pigments explored as sensitizers. The review of different attempts on fabrication of natural dye based solar cells implies that titanium dioxide (TiO 2 ) nano particles can be used as photoanode, platinum (Pt) as counter electrode and iodine/iodide electrolyte. Plant pigments are highly pH sensitive and can alter solar cell performance based on its extraction method, concentration and its ability to anchor with photoanode. Stability of dye, absorption in near IR range and leakage of liquid electrolyte are few of the challenges ahead. However, natural dye is biodegradable and non-toxic having most of the extraction process harmless to environment. In addition, natural dye has the promising future as it is abundant. …………………………………………………………………………………………………….... Introduction:-Exhaustion of fossil fuels lead the world to shift from the conventional energy sources to renewable energy to meet the growing energy demand. Although the process is gradual but the potential of renewable energy was well talked in the past decade. Wind energy is effective, but due to the inconsistency of the blowing wind, it is not quite efficient. Unlike wind energy, solar energy has a fair amount of consistency. As a result, the conversion of solar energy into different forms was the core of the research for the recent past years [1].Nanotechnology is a rapidly promising technology with vast potential in creating new materials with unique properties and to produce new and improved products for photo voltaic applications. The term nanoparticle refers to any small particle with all three dimensions less than 100 nanometres (nm) in size. It has a large surface area per unit mass. Titanium dioxide (TiO 2 ) nanomaterials are known for their numerous and different applications, which range from common products, such as sunscreens, to in advanced devices such as photovoltaic cells a series of environmental and biomedical applications such as photocatalytic degradation of pollutants, water purification, biosensing and drug delivery. The importance and variety of these applications have spur enormous interest and

Effect of ZnO Nanomaterial and Red and Green Cabbage Dyes on the Performance of Dye-Sensitised Solar Cells

“…Iodide regenerates the sensitiser and the sensitiser is regenerated itself by the reduction of triiodide at the counter electrode. In this way, the circuit is completed by transferring electrons via the external load, as shown in Figure 3f in agreement with Divya et al [22].…”

“…Sengupta et al [21] reported a conversion efficiency of 0.148% using dye from spinach leaves as the sensitiser. Divya et al [22] reviewed various attempts to fabricate solar cells using TiO 2 nanoparticles. Vallejo et al [23] synthesised and characterised composites of graphene.…”

“…Bahman et al [27] used a surface methodology to extract alkaloid compounds. Divya et al [22] used an anthocyanin-rich extract with TiO 2 thin films for the photocatalytic degradation of methylene blue. Harnchana et al [24] used poly (N-vinylcarbazole) (PVK) as an additive in the I − /I −3 redox electrolyte and studied the photoelectrochemical effect of PVK with various concentrations, in terms of the corresponding photovoltaic performance.…”