Highly stable dye-sensitized solid-state solar cell with the semiconductor 4CuBr 3S(C4H9)2 as the hole collector

Tennakone, K.; Senadeera, G.K.R.; Silva, D. B. R. A. De; Kottegoda, I. R. M.

doi:10.1063/1.1312858

Cited by 91 publications

(52 citation statements)

References 15 publications

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“…Thus, solid-state and quasi-solid-state electrolytes, such as polymer gel electrolytes, [8][9][10][11][12][13][14] organic hole conductors, [2,15,16] inorganic p-type semiconductors (CuI, CuBr, CuSCN, NiO, etc. ), [17][18][19][20][21] and polymer electrolytes, [9,[22][23][24][25][26][27] have been proposed as alternatives to the liquid electrolytes. Of these types of electrolytes, organic hole conductors, inorganic p-type semiconductors, and polymer electrolytes have been used in DSSCs as solid-state electrolytes.…”

Section: Introductionmentioning

confidence: 99%

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

Hao

Lin

et al. 2007

Adv Funct Materials

214

120

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Dye‐sensitized solar cells (DSSCs) are receiving considerable attention as low‐cost alternatives to conventional solar cells. In DSSCs based on liquid electrolytes, a photoelectric efficiency of 11 % has been achieved, but potential problems in sealing the cells and the low long‐term stability of these systems have impeded their practical use. Here, we present a thermoplastic gel electrolyte (TPGE) as an alternative to the liquid electrolytes used in DSSCs. The TPGE exhibits a thermoplastic character, high conductivity, long‐term stability, and can be prepared by a simple and convenient protocol. The viscosity, conductivity, and phase state of the TPGE can be controlled by tuning the composition. Using 40 wt % poly(ethylene glycol) (PEG) as the polymeric host, 60 wt % propylene carbonate (PC) as the solvent, and 0.65 M KI and 0.065 M I2 as the ionic conductors, a TPGE with a conductivity of 2.61 mS cm–2 is prepared. Based on this TPGE, a DSSC is fabricated with an overall light‐to‐electrical‐energy conversion efficiency of 7.22 % under 100 mW cm–2 irradiation. The present findings should accelerate the widespread use of DSSCs.

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Section: Introductionmentioning

confidence: 99%

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

Hao

Lin

et al. 2007

Adv Funct Materials

214

120

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“…Pioneering work towards all-solid nanocomposite cells was delivered by O'Regan [7] and Tennakone [8], who still used molecular light absorbing dyes but replaced the redox electrolyte with a transparent inorganic hole conductor, such as CuI and CuSCN. At the Hahn Meitner Institute (HMI) Rolf Könenkamp introduced the 'extremely thin absorber' (ETA) cell [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Spray-deposited CuInS₂solar cells

Goossens

Hofhuis

2008

Nanotechnology

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Spray deposition of CuInS 2 offers an attractive route towards industrial production of thin-film solar cells. With spray deposition it is possible to make nanocomposites of n-type TiO 2 and p-type CuInS 2 . Upon application of an In 2 S 3 buffer layer, solar cells can be made with efficiencies of ∼7%, being comparable to that of amorphous silicon. Rapid thermal annealing is not involved in the production of these solar cells. In order to further improve the performance, the concentration of electronic defect states in the bandgap must be reduced. Towards this end a detailed study has been undertaken to elucidate the role of associated point defects in the recombination of electron-hole pairs. Especially with transient absorption spectroscopy it is possible to make an accurate assessment of the fundamental electronic processes that are involved. We find electronic states in the bandgap related to the presence of anti-site defects. In addition, indium vacancies are also involved. State-to-state recombination occurs, indicating that the involved defects are associated. An electronic state located at 1.1 eV above the valence band, which is related to indium on a copper position, has a lifetime of about 20 μs at room temperature. The lower lying states related to copper on indium positions, and indium vacancies, are populated from this 1.1 eV state.

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“…Solid-hole transport materials and solvent free polymer electrolyte incorporating iodide and triiodide have been introduced to replace the liquid electrolytes, but until now efficiencies of these devices are still relatively low [8][9][10][11][12][13][14]. The use of non-volatile liquids or room temperature molten salts (ionic liquids) such as imidazolium salts and pyridinium salts with high ionic conductivity at room temperature would be another solution to the problems.…”

Section: Methodsmentioning

confidence: 99%

Efficient quasi-solid dye sensitized solar cells employing molten salt electrolyte

Senadeera¹,

Silva

2006

Sri Lankan J Phys

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There have been many attempts to increase the overall conversion efficiency of dye-sensitized solar cells using liquid-state electrolytes. However, this type of cells have unsolved critical problems such as leakage and evaporation of volatile organic solvents. Thus the development of more stable solid or quasi-solid state cell is of great importance. In the study reported here, we developed a novel fabrication method of dye sensitized quasi-solid solar cells using solid composite materials of LiSCN and methyl-hexyl-imidazolium iodide (MHImI) as hole transport materials to replace liquid iodide and polyiodide electrolyte which consists of volatile solvents. The device based on 6 µm thick nanocrystalline TiO 2 film absorbed by monolayer of Ru(II) terpyridyl complex photosensitizer (N719 dye), shows excellent incident photon-to-electron conversion efficiency (IPCE, ~ 75%) , large current density (11.6 mA cm -2 ), and high light-to-electric energy conversion efficiency (5.3-6.1%) under the illumination of 100 mW cm -2 (AM 1.5).

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Highly stable dye-sensitized solid-state solar cell with the semiconductor 4CuBr 3S(C4H9)2 as the hole collector

Cited by 91 publications

References 15 publications

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

Spray-deposited CuInS₂solar cells

Efficient quasi-solid dye sensitized solar cells employing molten salt electrolyte

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Highly stable dye-sensitized solid-state solar cell with the semiconductor 4CuBr 3S(C4H9)2 as the hole collector

Cited by 91 publications

References 15 publications

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

A Thermoplastic Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

Spray-deposited CuInS2solar cells

Efficient quasi-solid dye sensitized solar cells employing molten salt electrolyte

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Product

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About

Spray-deposited CuInS₂solar cells