2006
DOI: 10.1021/jp062865q
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Fast Electron Transport in Metal Organic Vapor Deposition Grown Dye-sensitized ZnO Nanorod Solar Cells

Abstract: The electron transport in dye-sensitized solar cells with a MOCVD (metal organic vapor deposition)-grown ZnO nanorod array (ZnO-N) or a mesoporous film prepared from ZnO colloids (ZnO-C) as the working electrode was compared. The electrodes were of similar thickness (2 µm) and sensitized with zinc(II) mesotetrakis(3-carboxyphenyl)porphyrin, while the electrolyte was I -/I 3 -in 3-methoxypropionitrile. Electron transport in the ZnO-C cells was comparable with that found for colloidal TiO 2 films (transport time… Show more

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Cited by 426 publications
(303 citation statements)
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“…Using D ¼ L 2 / (2.47t tr ), an electron diffusion coefficient (D) of 5.4 Â 10 À5 cm 2 s À1 is calculated, which is much lower than expected for electron diffusion in a ZnO single crystal. 31 The t tr and s e dependence on the nanorod length is similar to that in DSCs based on ZnO NRAs, 30 indicating that the injected electrons are transported though the ZnO nanorod, which is different from the reported Al 2 O 3 /CH 3 NH 3 PbI 2 Cl solar cell where electron transport occurs in the perovskite layer. 25 The electron transport time in the ZnO NRAs is slightly faster than that in mesoporous TiO 2 lms of similar thickness.…”
Section: Resultsmentioning
confidence: 89%
“…Using D ¼ L 2 / (2.47t tr ), an electron diffusion coefficient (D) of 5.4 Â 10 À5 cm 2 s À1 is calculated, which is much lower than expected for electron diffusion in a ZnO single crystal. 31 The t tr and s e dependence on the nanorod length is similar to that in DSCs based on ZnO NRAs, 30 indicating that the injected electrons are transported though the ZnO nanorod, which is different from the reported Al 2 O 3 /CH 3 NH 3 PbI 2 Cl solar cell where electron transport occurs in the perovskite layer. 25 The electron transport time in the ZnO NRAs is slightly faster than that in mesoporous TiO 2 lms of similar thickness.…”
Section: Resultsmentioning
confidence: 89%
“…In the case of p-ZnTCPP, where the -COOH groups are situated in the plane of the tetrapyrrole macrocycle, the extensive hydrogen bonding of the carboxylic acid groups resulted in a shi to lower frequency of the n (C]O) stretch at 1690 cm À1 and a shi to higher frequency of the n (C-O) stretch at 1402 cm À1 . 22 Upon binding of m-ZnTCPP to TiO 2 , the n (C]O) and n (C-O) stretching modes disappeared completely, and new bands appeared in the 1385-1440 cm À1 and 1530-1570 cm À1 regions, corresponding to the symmetric and asymmetric n (CO 2 À ) stretches, respectively. In the case of p-ZnTCPP/TiO 2 , the bands corresponding to the C]O and C-O stretching modes were still partially present with a slight broadening of the latter.…”
Section: Resultsmentioning
confidence: 97%
“…Due to a variety of attractive physical and chemical properties, it is a promising candidate for a range of applications, such as solar cells (Galoppini et al 2006), gas sensors , lasing diodes (Huang et al 2001), catalysts (Height et al 2006), and antibacterial agents (Amornpitoksuk et al 2011). It is an effective bactericide against both Gram-positive and Gram-negative bacteria (Tam et al 2008;Zhang et al 2008).…”
Section: Introductionmentioning
confidence: 99%