Microstructure Characterization of TiO₂Photoelectrodes for dyesensitized Solar Cell using Statistical Design of Experiments

Abstract

Employing statistical design of experiments, we have performed studies on the characterization of electrodes using TiO 2 and process variables in the fabrication process of nanocrystalline dye sensitized solar cell. Systematic experiment to identify the effects of process variables on cell's efficiency has based on broad-band absorption of light by tailor made organometallic dye molecules dispersed on a high surface of TiO 2 . Employing statistical design of experiment on TiO 2 photoelectrode forming process, structural characterization of electrodes and process variable have been investigated. Through the statistical analysis we have found that the particle size of TiO 2 and the amount of PEG/PEO are significantly affecting on the cell efficiency. In addition, a significant amount of interaction exists between the particle size and the amount of PEG/PEO.

Etch Characterization of TiO2 Thin Films Using Metal–Insulator–Metal Capacitor in Adaptively Coupled Plasma

“…2(a)-2(d). [11][12][13][14][15][16][17] To investigate the chemical states on the etched surfaces of the TiO 2 thin films, XPS analysis was carried out. The chemical states on the etched surfaces were compared with those on the as-deposited one.…”

Enhancement of the photoelectric performance of dye-sensitized solar cells using Ag-doped TiO2 nanofibers in a TiO2 film as electrode

“…Since the Grätzel group discovered dye-sensitized solar cells [DSSCs], many people became interested. The low-cost, high-solar conversion efficiency of DSSCs is considered as a possible alternative to the present silicon solar cells [ 1 - 3 ]. DSSCs employ a sensitizer (dye) adsorbed on a surface of a wide energy bandgap semiconductor and electrolyte dissolving redox couples such as I - /I 3 - and platinum [Pt] counter electrode [ 4 ].…”

Capillary Electrophoresis Analysis of Metal/Metalloid Oxide Nanoparticles in Water: Method Development for the Enhancement of UV Detection Sensitivity

“…Due to its photocatalytic properties and UV light absorptivity, TiO2 finds numerous applications including utilization in consumer products such as sunscreens 13, cosmetics [14], plastics 15, electronics [16], sports equipment [17], clothing [18], household cleaning solutions 19, and paints. [20] Other fundamental applications [21] include agriculture, environmental remediation of pollutants in wastewater treatment, air purification, solar energy conversion, tunnel lighting, sound insulation, offset printing, medical imaging, and drug delivery.…”

“…Equation (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) indicates that the µep is proportional to r. This relationship suggests that negatively charged particles with larger radii travel at a faster rate toward the anode (or capillary inlet). Since they move in the opposite direction to the EOF, μeo ones determined by TEM.…”

“…This was first done by Wiersema et al [151] and further extended to higher value of ζ-potential by O'Brien and White. [152] Few years later, Oshimah presented the following approximate equation, which is valid for 1:1 electrolytes and ζ-potential values ≤ 100 mV [153]; (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) where εr is the relative electric permittivity, ε0 is the electric permittivity of vacuum, , κ is the Debye-Hückel parameter, Rh is the hydrodynamic radius, k is Boltzmann constant, e is the elementary electric charge, T is the absolute temperature, and f 1, f 3, and f 4 are a function of κRh and are given by:…”