Impact of Size Distribution of Nanoparticles in TiO2 Paste for its Application in Dye Sensitized Solar Cells

Dhungel, Suresh Kumar; Park, Chang Woo

doi:10.3126/hj.v4i0.9423

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…The short-circuit current density (J SC ) and open-circuit voltage (V OC ) of sample B are 0.127 mA cm −2 and 215 mV, respectively, which are higher than those of sample A (0.058 mA cm −2 and 170 mV), leading to a significant enhancement of efficiency (0.010% compared to 0.0037% for sample A). It is well known that the TiO 2 photoanode constructed from the smaller particles has greater surface area than that having larger particles [30] and therefore, the amount of the adsorbed dye by the TiO 2 photoanode fabricated with small particles is more [31]. UV-Vis absorption spectra of desorbed N719 dye from the TiO 2 photoanode confirms our statement about the amount of adsorbed dye on the surface of nanoparticles (figure 3b).…”

Section: Methodssupporting

confidence: 86%

Influence of $$\hbox {TiO}_{2}$$ TiO 2 particle size and conductivity of the CuCrO $$_{2}$$ 2 nanoparticles on the performance of solid-state dye-sensitized solar cells

Asemi

Ghanaatshoar

2017

Bull Mater Sci

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Solid-state dye-sensitized solar cells have been fabricated with mesoporous TiO 2 photoanode and N719 dye as photosensitizer. First, TiO 2 and non-doped, Zn-and Mg-doped CuCrO 2 nanoparticles have been synthesized by sol-gel method. In addition, the TiO 2 pastes have been prepared through Pechini-type sol-gel method. The effect of TiO 2 particle size, mesoporous TiO 2 photoanode thickness and solid-state electrolyte thickness on the efficiency of the fabricated devices has been investigated. Our results show that in spite of the low amount of dye loading for photoanode with large TiO 2 nanoparticles (80-180 nm), the dye-sensitized solar cell made from it has higher efficiency than that constructed from the photoanode comprising of small particles about 10-15 nm in size. The higher efficiency is attributed to the longer diffusion length of electrons because of a better electron transport and penetration of a large amount of CuCrO 2 nanoparticles in the porous structure of TiO 2 photoanode. By using the doped CuCrO 2 nanoparticles, the efficiency has been increased from 0.027% for TiO 2 /N719 dye/CuCrO 2 to 0.033% for TiO 2 /N719 dye/CuCrO 2 :Zn and further increased to 0.042% for TiO 2 /N719 dye/CuCrO 2 :Mg. The efficiency enhancement by doping is ascribed to the conductivity improvement due to the presence of impurity atoms.

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Section: Methodssupporting

confidence: 86%