Dye-Sensitized Solar Cells with Conversion Efficiency of 11.1%

Chiba, Yasuo; Islam, Ashraful; Watanabe, Yūki; Komiya, Ryoichi; Koide, Naoki; Li, Han

doi:10.1143/jjap.45.l638

Cited by 1,880 publications

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“…Using state-of-the-art ruthenium-based inorganic dyes, efficiencies higher than 11% have been reported. [2][3][4] DSCs are generally made from cheap and nontoxic components and can be designed in a variety of different colors and transparencies, which distinguishes them as an ideal photovoltaic concept for integrated architecture. It therefore seems only a matter of time before large scale production will follow.…”

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confidence: 99%

Dye-Sensitized Solar Cell Based on a Three-Dimensional Photonic Crystal

et al. 2010

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We present a material assembly route for the manufacture of dye-sensitized solar cells, coupling a high-surface mesoporous layer to a three-dimensional photonic crystal (PC). Material synthesis aided by self-assembly on two length scales provided electrical and pore connectivity at the mesoporous and the microporous level. This construct allows effective dye sensitization, electrolyte infiltration, and charge collection from both the mesoporous and the PC layers, opening up additional parameter space for effective light management by harvesting PC-induced resonances.KEYWORDS Photonic crystal, self-assembly, photovoltaics, dye-sensitized solar cell E ver since the pioneering work of O'Regan and Grät-zel, dye-sensitized solar cells (DSCs) have attracted great interest as a promising technology for future sustainable energy generation. 1 In DSCs, charge carrier generation takes place in a chemisorbed monolayer of photoactive dye which is sandwiched between a semiconductor oxide, usually mesoscopic anatase, and an electrolyte acting as electron and hole conducting materials, respectively. Using state-of-the-art ruthenium-based inorganic dyes, efficiencies higher than 11% have been reported. [2][3][4] DSCs are generally made from cheap and nontoxic components and can be designed in a variety of different colors and transparencies, which distinguishes them as an ideal photovoltaic concept for integrated architecture. It therefore seems only a matter of time before large scale production will follow. 5 In general, improvements in the overall power conversion efficiency have been centered on increasing the photovoltage through manipulation of the oxide, improving the photocurrent with new dyes, and increasing stability by better encapsulation. 5 While record-holding liquid electrolyte DSCs already achieve maximum quantum efficiency (photon-toelectron conversion) in the spectral range around 520 nm, light harvesting in the red and near-infrared (at the tail of the absorption spectra) is still relatively low. In solid-state devices, light absorption is generally limited by the film thickness, as thick mesoporous films prove difficult to infiltrate. 6 One way to successfully enhance light harvesting is the introduction of optical elements, such as highly scattering layers. These consist of large particles, that increase the photon path length in the cell. 7,8 This ubiquitous approach has the unfortunate effect of rendering the DSC opaque thus depriving it of one of its main advantages over competing technologies. As a result, photonic band gap materials in the form of 3D inverted TiO 2 opal or porous bragg stacks have been applied to DSCs to enhance light harvesting in specific partsofthespectrumwhileretainingthecelltransparency. 9-12 Several theoretical approaches report a variety of possible effects, including the localization of heavy photons near the edges of a photonic bandgap, 13 Bragg diffraction in a periodic lattice, 14 multiple scattering at disordered regions in the photonic crystal (PC), 15 and the for...

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Dye-Sensitized Solar Cell Based on a Three-Dimensional Photonic Crystal

et al. 2010

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“…sehingga disebut juga sel Gratzel. Efisiensi konversi yang dihasilkan dari sel surya TiO 2 tersensitisasi dye telah mencapai 10-11% [4,5].…”

Section: Pendahuluanunclassified

PENGGUNAAN EKSTRAK ANTOSIANIN KOL MERAH SEBAGAI FOTOSENSITIZER PADA SEL SURYA TiO2 NANOKRISTAL TERSENSITISASI DYE

Maddu¹,

Zuhri²

2010

MST

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AbstrakTelah dipabrikasi sel surya TiO 2 nanokristal padat tersensitisasi dye menggunakan ekstrak antosianin dari kol merah sebagai fotosensitizer. Sel surya dibentuk dengan struktur sandwich, dimana dua elektroda mengapit elektrolit polimer yang mengandung kopel redoks I -/I 3 -. Salah satu elektroda, yaitu elektroda kerja berupa lapisan TiO 2 pada substrat kaca berlapis bahan TCO (transparent conducting oxide) disensitisasi dengan dye antosianin sebagai donor elektron dalam sistem sel surya ini. Elektroda lain berupa lempengan karbon sebagai elektroda lawan. Elektrolit gel berbasis PEG (polyethylene glycol) mengandung kopel redoks I -/I 3 -digunakan sebagai pengganti elektrolit cair pada sel fotoelektrokimia ini. Dua sel yang dipabrikasi memiliki luas 1 cm 2 direndam dengan dye antosianin masing-masing selama 1 jam dan 24 jam. Sel-sel ini diuji dengan penyinaran menggunakan lampu halogen 24 Watt dengan intensitas 4 mW/cm 2 pada jarak 30 cm. Hasil pengujian sel-sel ini memperlihatkan karakteristik I-V yang ideal dengan parameter keluaran: tegangan rangkaian buka (V OC ) 500 mV, arus rangkaian pendek (ISC) 5,6 µA dan 7,2 µA untuk masingmasing sel, fill factor (ff) 48% untuk kedua sel, konversi energi (η) 0,023% dan 0,055% masing-masing untuk sel yang direndam dengan dye selama 1 jam dan 24 jam. AbstractThe use of Red Cabbage's anthocyanine extract as a photosensitizer on a Dye-Sensitized Nanocrystalline TiO 2 Solar Cell. A solid-state dye-sensitized nanocrystalline TiO 2 solar cell utilizing anthocyanin extract form red cabbage as photosensitizer was fabricated. The solar cell was formed in sandwich structure, which two electrodes sandwiching polymer electrolyte containing a redox couple (I -/I 3 -). One of the electrodes, namely working electrode, TiO 2 layer on TCO (transparent conducting oxide) coated glass substrate was sensitized with anthocyanin dye as electron donor in the system. Another electrode was a carbon sheet as a counter electrode. Gel electrolyte based on PEG (polyethylene glycol) containing a redox couple (I -/I 3 -) used instead of liquid electrolyte in this photoelectrochemical cell. Two fabricated cells have an active area of 1 cm 2 were soaked with anthocyanine dye for 1 hr and 24 hrs, respectively. The cells were tested by irradiation with halogen lamp of 24 Watt with intensity 4 mW/cm 2 at a distance 30 cm. The testing results of the cells show an ideal I-V characteristic with output parameters: open circuit voltage (V OC ) of 500 mV, short circuit current (I SC ) of 5,6 µA and 7,2 µA for each cells, fill factor (FF) of 48% for both cells, energy conversion (η) of 0.023 % and 0,055 % for the cells with 1 hr and 24 hrs dye soaked, respectively.

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“…[1][2][3] Generally, DSSCs comprises three components: nanocrystalline TiO 2 film photoanode, redox electrolyte, and counter electrode. [4,5] As one of the most important components in DSSCs, the nanocrystalline TiO 2 film covered by a monolayer of dye molecules has significant influence on photoelectric performance of DSSCs.…”

Section: Introductionmentioning

confidence: 99%

Influence of Electrolyte Concentration on Photovoltaic Performance of DSSCs Based on TiO2 Nanotube Array

Tong¹,

Chen²

2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. The present work reports a double-layer composite film made of TiO 2 nanotube arrays (TNT-arrays) as the overlayer and TiO 2 nanoparticle (P25) as the underlayer as the photoanode of dye-sensitized solar cells (DSSCs). The TNT-arrays were fabricated by two-step anodization process. In order to further improve the conversion efficiency of DSSCs, TNT-arrays were optimized by changing the anodization conditions. The photoelectric conversion properties of DSSCs with different electrolyte concentration were investigated and compared, and the highest conversion efficiency of 4.20% was achieved in double-layer photoanode at the electrolyte concentration of 0.3wt%.

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Dye-Sensitized Solar Cells with Conversion Efficiency of 11.1%

Cited by 1,880 publications

References 10 publications

Dye-Sensitized Solar Cell Based on a Three-Dimensional Photonic Crystal

Dye-Sensitized Solar Cell Based on a Three-Dimensional Photonic Crystal

PENGGUNAAN EKSTRAK ANTOSIANIN KOL MERAH SEBAGAI FOTOSENSITIZER PADA SEL SURYA TiO2 NANOKRISTAL TERSENSITISASI DYE

Influence of Electrolyte Concentration on Photovoltaic Performance of DSSCs Based on TiO2 Nanotube Array

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