Simulation of electron diffusion in TiO2 porous structures in dye-sensitized solar cells

Kei Ogiya, Chen Lv, Ai Suzuki, Riadh Sahnoun, Michihisa Koyama, Hideyuki Tsuboi, Nozomu Hatakeyama, Akira Endou, Hiromitsu Takaba, Carlos A. Del Carpio, Ramesh C. Deka, Momoji Kubo, Akira Miyamoto

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In order to understand the behavior of electrons in complex porous structures, we have simulated electron diffusion processes in complex porous structures that have been fabricated using a system for a three-dimensional porous structure simulator, POCO2. For a given porosity, as the overlap ratio representing a necked porous TiO2 structure increased, the coordination number of TiO2 particles increased, resulting in an increase in electron flux and a decrease in trapping time. To gain better insights, we simulated the diffusion of electrons using models with different particle size distributions. This study shows that for a narrower size distribution of TiO2 particles, a better electron diffusion process is realized. This result can be ascribed to the formation of a better TiO 2 coordination network. Consequently, through this study, we have shown that a well-formed neck between TiO2 particles improves the electron diffusion properties of a complex porous material.

Original languageEnglish
Article number04C166
JournalJapanese journal of applied physics
Volume48
Issue number4 PART 2
DOIs
Publication statusPublished - Apr 1 2009

Fingerprint

electron diffusion
solar cells
dyes
Electrons
electron flux
simulation
porous materials
particle size distribution
coordination number
simulators
electrons
trapping
porosity
Particle size analysis
Porous materials
Dye-sensitized solar cells
Porosity
Simulators
Fluxes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Ogiya, K., Lv, C., Suzuki, A., Sahnoun, R., Koyama, M., Tsuboi, H., ... Miyamoto, A. (2009). Simulation of electron diffusion in TiO2 porous structures in dye-sensitized solar cells. Japanese journal of applied physics, 48(4 PART 2), [04C166]. https://doi.org/10.1143/JJAP.48.04C166

Simulation of electron diffusion in TiO2 porous structures in dye-sensitized solar cells. / Ogiya, Kei; Lv, Chen; Suzuki, Ai; Sahnoun, Riadh; Koyama, Michihisa; Tsuboi, Hideyuki; Hatakeyama, Nozomu; Endou, Akira; Takaba, Hiromitsu; Del Carpio, Carlos A.; Deka, Ramesh C.; Kubo, Momoji; Miyamoto, Akira.

In: Japanese journal of applied physics, Vol. 48, No. 4 PART 2, 04C166, 01.04.2009.

Research output: Contribution to journalArticle

Ogiya, K, Lv, C, Suzuki, A, Sahnoun, R, Koyama, M, Tsuboi, H, Hatakeyama, N, Endou, A, Takaba, H, Del Carpio, CA, Deka, RC, Kubo, M & Miyamoto, A 2009, 'Simulation of electron diffusion in TiO2 porous structures in dye-sensitized solar cells', Japanese journal of applied physics, vol. 48, no. 4 PART 2, 04C166. https://doi.org/10.1143/JJAP.48.04C166
Ogiya, Kei ; Lv, Chen ; Suzuki, Ai ; Sahnoun, Riadh ; Koyama, Michihisa ; Tsuboi, Hideyuki ; Hatakeyama, Nozomu ; Endou, Akira ; Takaba, Hiromitsu ; Del Carpio, Carlos A. ; Deka, Ramesh C. ; Kubo, Momoji ; Miyamoto, Akira. / Simulation of electron diffusion in TiO2 porous structures in dye-sensitized solar cells. In: Japanese journal of applied physics. 2009 ; Vol. 48, No. 4 PART 2.
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