Polymer-sensitized Solar Cells with Novel Soluble Polythiophene Derivatives

Kubo, Takaya; Akitsu, Kenta; Uchida, Satoshi; Segawa, Hiroshio; Otani, Naoki; Tomura, Misayo; Tamura, Takayuki; Matsumura, Mitsunobu

doi:10.2494/photopolymer.23.283

Cited by 6 publications

(7 citation statements)

References 9 publications

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“…Hydrolysis of the PT-MC polymer was performed using NaOH to obtain a polymer with a hydrolysis ratio, defined as [COOH]/([COOH] + [COOMe]), of 85%, hereafter referred to as PT-C 85 (see Figure 1). A detailed description of the polymer synthesis can be found in the work of Kubo et al 16 Core−Shell Particle Fabrication. Core−shell Au@SiO 2 particles were synthesized using wet chemical methods.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Plasmon-Enhanced Polymer-Sensitized Solar Cells

et al. 2015

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Plasmon-enhanced polymer-sensitized solar cells were manufactured by incorporating core−shell Au@ SiO 2 particles into the TiO 2 photoanode. The plasmonenhanced solar cells showed an improved performance due to an increased j sc leading to a higher power conversion efficiency compared to reference devices without Au@SiO 2 particles, and a small increase in the V oc was also observed. The incident photon to current efficiency (IPCE) spectra showed that an enhanced absorption in the plasmon devices was the cause of the improved performance. By electrodynamics modeling of the Au@SiO 2 particles, we conclude that a combination of scattering and near-field enhancement is the cause of the increased efficiency in these plasmon-enhanced solar cells.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Plasmon-Enhanced Polymer-Sensitized Solar Cells

et al. 2015

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“…Therefore, some researchers speculated that these electrochromic materials could be used in energy-storable solar cells. [32][33][34][35][36][37][38] Terakado et al 39 reported an erasable photochromic bilayer metal oxide film of tin oxide and magnesium oxide. In their paper, they inferred absorption or scattering for electrochromic phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of photochromic nanoparticles and determination of the mechanism of photochromism

et al. 2016

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Photochromic nanoparticles of zinc-silicon oxide were synthesized using plasma enhanced chemical vapor deposition. These particles turned black upon irradiating with ultraviolet light. We investigated this phenomenon using density functional theory calculations. Silicon inclusions create trap levels and oxygen defects that reduce the ionization potential of ZnO. This forms a quantum potential between ZnO and zinc-silicon oxide, and the excited electron is stable. Because oxygen defects also increase the bond overlap population between the zinc atoms in a ZnO crystal, they introduce further defects and help in the formation of quantum potentials. Growth of a perfect crystal of ZnO prevents the formation of oxygen defects, which is not desirable for photochromism.

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“…When using polymers as sensitizers it is highly important that the polymers attach efficiently enough to the mesoporous TiO 2 layer. Recently Kubo et al used hydrolysis to create hydrophilic carboxyl acid groups attached directly to the thiophene ring to ensure good adhesion [10]. It was shown that the hydrophilic anchoring units improved the solar cell performance.…”

Section: Introductionmentioning

confidence: 99%

Charge transport studies on novel PT-derivatives with hydrophilic anchoring groups

et al. 2013

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Using charge extraction techniques we have clarified the charge transport properties of novel poly-thiophene derivatives intended for use as sensitizers in polymer sensitized solar cells. The polymers are of low molecular weight in order to enable penetration into a mesoporous titanium dioxide film. Hydrophilic anchoring units are attached to the thiophene ring to facilitate attachment of the polymer to the titanium dioxide. The hole transporting properties were determined in order to clarify the possibility of using the polymers both as sensitizers and hole transporting material in a hybrid type device. We found that the mobilities are in the range of 1-4•10-8 cm 2 /Vs. The low mobility is compensated by very long charge carrier lifetimes in the order of 100 ms resulting in a very promising charge carrier drift distance of 1 µm.

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Polymer-sensitized Solar Cells with Novel Soluble Polythiophene Derivatives

Cited by 6 publications

References 9 publications

Plasmon-Enhanced Polymer-Sensitized Solar Cells

Plasmon-Enhanced Polymer-Sensitized Solar Cells

Synthesis of photochromic nanoparticles and determination of the mechanism of photochromism

Charge transport studies on novel PT-derivatives with hydrophilic anchoring groups

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