Long-term stability of novel double rhodanine indoline dyes having one and two anchor carboxyl group(s) in dye-sensitized solar cells

Matsui, Masaki; Tanaka, Nagisa; Kubota, Yasuhiro; Funabiki, Kazumasa; Jin, Jiye; Higashijima, Shinji; Miura, Hidetoshi; Manseki, Kazuhiro

doi:10.1039/c5ra23623a

Cited by 10 publications

(5 citation statements)

References 42 publications

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“…The preparation of dye-sensitized nanocrystalline-TiO 2 and Pt electrodes was described elsewhere; the thickness of the transparent nanocrystalline-TiO 2 layer (JGC C&C, PST-18NR) was ∼8 μm, and the scattering layer was not used. For the dye uptake, the TiO 2 electrodes were immersed into the DN488, D205, and DN182 solution, respectively, with a concentration of 0.2 mM in a mixture of acetonitrile and tert -butylalcohol (v/v, 1:1) and kept at room temperature for 30 min or 6 h. For the coadsorption, chenodeoxycholic acid with a concentration of 0.4 mM was added.…”

Section: Methodsmentioning

confidence: 99%

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

et al. 2016

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Electric field effects on photoexcitation dynamics and electronic properties of highly efficient indoline sensitizers, DN488, D205, and DN182, embedded in PMMA films have been examined by using electroabsorption (E-A) and electrophotoluminescence (E-PL) spectroscopic techniques and time-resolved photoluminescence (PL) decay measurements in the presence of electric fields. Photovoltaic performances have been also measured for devices constructed using these sensitizers. Then, field-induced quenching of PL and field-induced change in PL decay profile were observed, and it was found that these field effects, which depend on the sensitizers investigated herein, are well correlated with the trend of power conversion efficiencies of the corresponding photovoltaic cells. Electric dipole moment and molecular polarizability of these sensitizers both in the ground state (S0) and in the excited state have been calculated at the level of B3LYP/6-31G(d), and the differences of these physical parameters between S0 and the excited state thus obtained have been compared with the ones determined from the E-A and E-PL spectra. The present study of Stark spectroscopy of indoline dyes provides new insights for the exciton dissociation property and carrier mobility of organic dyes, which are important factors to understand the operation mechanism in dye-sensitized solar cells.

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Section: Methodsmentioning

confidence: 99%

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

et al. 2016

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“…The conversion efficiency achieved by using D205 dye molecules is comparable with indoline dyes (3.39-5.46%), reported by our group, in which a high-performance TiO 2 paste (PST-18NR) was adapted for the device assembly [17]. Furthermore, such a respectable performance was achieved without a commonly used TiCl 4 treatment (for making better contacts between TiO 2 particles and/or, TiO 2 particle, and FTO) in this work, suggesting that our submicron-scale TiO 2 particles can offer favorable electron transport in indoline-based DSSCs.…”

Section: Resultsmentioning

confidence: 59%

“…The electrolyte solution was a combination of 0.6 M 1,2-dimethyl-3-propylimidazolium iodide, 0.1 M LiI, 0.05 M I 2 , and 0.05 M 4-t-butylpyridine using 3-methoxypropionitrile as a solvent. The electrolyte was filled into the assembled cell with a vacuum backfilling method [17].…”

Section: Deposited Porous Layer Of Tio 2 Nanoparticlesmentioning

confidence: 99%

Controlled Assembly of Nanorod TiO₂ Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells

Vafaei

Manseki

Horita

et al. 2017

International Journal of Photoenergy

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We present for the first time a synthetic method of obtaining 1D TiO 2 nanorods with sintering methods using bundle-shaped 3D rutile TiO 2 particles (3D BR-TiO 2 ) with the dimensions of around 100 nm. The purpose of this research is (i) to control crystallization of the mixture of two kinds of TiO 2 semiconductor nanocrystals, that is, 3D BR-TiO 2 and spherical anatase TiO 2 (SA-TiO 2 ) on FTO substrate via sintering process and (ii) to establish a new method to create photoanodes in dye-sensitized solar cells (DSSCs). In addition, we focus on the preparation of low-cost and environmentally friendly titania electrode by adopting the "water-based" nanofluids. Our results provide useful guidance on how to improve the photovoltaic performance by reshaping the numerous 3D TiO 2 particles to 1D TiO 2 -based electrodes with sintering technique.

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“…We analyzed the quality of printed TiO2 thin films, including ink film thickness, uniformity and surface roughness of ink film by Scanning Electron Microscope (SEM) and 3D measuring laser microscope, respectively. The fabrication of DSSCs using the obtained TiO2 thin films were assembled in a way that was previously reported method using an indoline dye, D205 [9]. The conversion efficiency of DSSCs were measured using solar simulator as described previously [9].…”

Section: Characterization Of Tio 2 Thin Films and Dsscs Assemblymentioning

confidence: 99%

“…The fabrication of DSSCs using the obtained TiO2 thin films were assembled in a way that was previously reported method using an indoline dye, D205 [9]. The conversion efficiency of DSSCs were measured using solar simulator as described previously [9].…”

Section: Characterization Of Tio 2 Thin Films and Dsscs Assemblymentioning

confidence: 99%

3D Printed Titanium Dioxide Thin Films for Optoelectronic Applications

Charoensopa

Hansuebsai

Manseki

2020

KEM

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This work focused on the printing of semiconductor TiO2 thin films for solar cell applications by 3D printing system. We demonstrate a Liquid Deposition Modeling (LDM) type for controlling the pattern of TiO2 electrode. The advantage of this type of printer is able to vary the numbers of printed layer as well as different levelling pattern of TiO2 thin films by one time operation. Our aim was to study the effects of operating parameters of the 3D printer, such as nozzle size, speed and pressure on the thickness and uniformity of the printed TiO2 films. Using a commercial TiO2 paste, TiO2 precursor films were deposited on a conductive F-doped SnO2 glass by adjusting nozzle size, speed and pressure. The precursor films with different printed layers and levelling pattern were sintered using oven to produce porous TiO2 electrodes. The thickness and surface roughness of obtained TiO2 electrodes were characterized using Scanning Electron Microscope (SEM) and 3D Measuring Laser Microscope. The printed TiO2 substrates were applied to dye-sensitized solar cells as electrodes. Our LDM type 3D printing will provide a new way of levelling design of device components for versatile optoelectronic applications.

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Long-term stability of novel double rhodanine indoline dyes having one and two anchor carboxyl group(s) in dye-sensitized solar cells

Abstract: An indoline dye having both α-cyanoacrylic and rhodanine acetic acid anchor groups at the acceptor moiety exhibited improved stability upon fluorescence lamp irradiation.

Cited by 10 publications

References 42 publications

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

Controlled Assembly of Nanorod TiO₂ Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells

3D Printed Titanium Dioxide Thin Films for Optoelectronic Applications

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Long-term stability of novel double rhodanine indoline dyes having one and two anchor carboxyl group(s) in dye-sensitized solar cells

Abstract: An indoline dye having both α-cyanoacrylic and rhodanine acetic acid anchor groups at the acceptor moiety exhibited improved stability upon fluorescence lamp irradiation.

Cited by 10 publications

References 42 publications

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

Stark Spectroscopy of Absorption and Emission of Indoline Sensitizers: A Correlation with the Performance of Photovoltaic Cells

Controlled Assembly of Nanorod TiO2 Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells

3D Printed Titanium Dioxide Thin Films for Optoelectronic Applications

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Controlled Assembly of Nanorod TiO₂ Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells