Fabrication of a high-performance dye-sensitized solar cell with 12.8% conversion efficiency using organic silyl-anchor dyes

Kakiage, Kenji; Aoyama, Yohei; Yano, Toru; Oya, Keiji; Kyômen, Tôru; Hanaya, Minoru

doi:10.1039/c5cc00464k

Cited by 191 publications

(139 citation statements)

References 19 publications

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“…[1] The highest laboratory cell efficiencies reportedf or DSSCs with ac obalt(II/ III) redox couple are 13.0 %f or zinc porphyrin dyes, [2] 11.5 % ruthenium dyes [3] and 12.8 %f or metal-free organic dyes. [4] Many organic dyes based on the donor-(p-bridge)-acceptor (D-p-A) system, which exhibit relatively high DSSC performances, have already been designed and developed. [5] One of the key issues in designing efficient D-p-A dyes relates to the effect of the p-bridge group.…”

Section: Introductionmentioning

confidence: 99%

Organic Dyes with Well‐Defined Structures for Highly Efficient Dye‐Sensitised Solar Cells Based on a Cobalt Electrolyte

Seo

Choi

Kim

2015

Chemistry A European J

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Seven SGT organics dyes, containing bis-dimethylfluoreneyl amino groups with a dialkoxyphenyl unit as an electron donor and a cyanoacrylic acid group as an anchoring group, connected with oligothiophenes, fused thiophenes and benzothiadiazoles as π-bridges, were designed and synthesised for applications in dye-sensitised solar cells (DSSCs). The photovoltaic performance of DSSCs based on organic dyes with oligothiophenes depends on the molecular structure of the dyes, in terms of the length change of the π-bridging units. The best performance was found with a π-bridge length of about 6 Å. To further enhance the photovoltaic performance associated with this concept, cyclopenta[1,2-b:5,4-b']dithiophene (CPDT) and benzothiadiazole were introduced into the π-bridge unit. As a result, the DSSC based on the organic dye containing the CPDT moiety showed the best photovoltaic performance with a short-circuit photocurrent density (Jsc ) of 14.1 mA cm(-2) , an open-circuit voltage (Voc ) of 0.84 V and a fill factor (FF) of 0.72, corresponding to an overall conversion efficiency (η) of 8.61 % under standard AM 1.5 irradiation.

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Section: Introductionmentioning

confidence: 99%

Organic Dyes with Well‐Defined Structures for Highly Efficient Dye‐Sensitised Solar Cells Based on a Cobalt Electrolyte

Seo

Choi

Kim

2015

Chemistry A European J

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“…Apart from CT, a matching of absorption spectra is hoped for full utility of sunlight. Because it is difficult for a single dye to cover the ultraviolet and near-infrared region, cosensitization provides a way with a variety of complementary dyes in order to broaden the absorption spectra range and strength [6][7][8][9][10][11]. A series of porphyrin dyes (XW1-XW4) cosensitized with Dye C1, in which highest cell efficiency has reached 10.45% [11], and the absorption band from dye C1 makes up for poor absorption in 500 nm for porphyrin dye.…”

Section: Introductionmentioning

confidence: 99%

Characterizations of Efficient Charge Transfer and Photoelectric Performance in the Cosensitization of Solar Cells

Liu

Lin

et al. 2018

Applied Sciences

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Dyes D35 and XY1 for solar cells have been investigated theoretically with the quantum chemistry method and visualized 3D cube representation. Some important information (such as absorption spectra, molecular orbitals, reorganization energy, chemical reactivity, driving force of electron injection, light-harvesting efficiency, as well as the dipole moment, etc.) has been studied to explain the efficiency of dyes, and the visualized intramolecular and intermolecular charge transfer process and fast dynamic process of the interface electron transfer have been studied to estimate the strength of electron transfer in cosensitization. Calculated results indicated that the improved absorption spectra range, fast electron injection, and the larger dipole moment significantly promote the cosensitized solar cell efficiency in comparison with isolated Dye-Sensitized Solar Cells (DSSCs).

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“…Recent developments have reported power conversion efficiencies (PCEs, η) exceeding 12%, achieved via optimization with materials such as panchromatic dyes and redox couples exhibiting higher redox potentials [7][8][9][10][11]. In DSCs, the dye absorbs light to form an exciton, then the charge generation is performed at the semiconductor-dye interface, and the semiconductor and the electrolyte serve as the charge transporting material.…”

Section: Introductionmentioning

confidence: 99%

Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells

Yum

Moon

et al. 2016

Energies

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Considering the increasing global demand for energy and the harmful ecological impact of conventional energy sources, it is obvious that development of clean and renewable energy is a necessity. Since the Sun is our only external energy source, harnessing its energy, which is clean, non-hazardous and infinite, satisfies the main objectives of all alternative energy strategies. With attractive features, i.e., good performance, low-cost potential, simple processibility, a wide range of applications from portable power generation to power-windows, photoelectrochemical solar cells like dye-sensitized solar cells (DSCs) represent one of the promising methods for future large-scale power production directly from sunlight. While the sensitization of n-type semiconductors (n-SC) has been intensively studied, the use of p-type semiconductor (p-SC), e.g., the sensitization of wide bandgap p-SC and hole transport materials with p-SC have also been attracting great attention. Recently, it has been proved that the p-type inorganic semiconductor as a charge selective material or a charge transport material in organometallic lead halide perovskite solar cells (PSCs) shows a significant impact on solar cell performance. Therefore the study of p-type semiconductors is important to rationally design efficient DSCs and PSCs. In this review, recent published works on p-type DSCs and PSCs incorporated with an inorganic p-type semiconductor and our perspectives on this topic are discussed.

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Fabrication of a high-performance dye-sensitized solar cell with 12.8% conversion efficiency using organic silyl-anchor dyes

Cited by 191 publications

References 19 publications

Organic Dyes with Well‐Defined Structures for Highly Efficient Dye‐Sensitised Solar Cells Based on a Cobalt Electrolyte

Organic Dyes with Well‐Defined Structures for Highly Efficient Dye‐Sensitised Solar Cells Based on a Cobalt Electrolyte

Characterizations of Efficient Charge Transfer and Photoelectric Performance in the Cosensitization of Solar Cells

Inorganic p-Type Semiconductors: Their Applications and Progress in Dye-Sensitized Solar Cells and Perovskite Solar Cells

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