Reference LPI-ARTICLE-2008-048doi:10.1002/anie.200703852View record in Web of Science Record created on 2008-01-16, modified 2016-08-08

A binder-free nanocrystalline TiO2 paste with high viscosity (see Figure) has been developed using non-thermal sintering conditions to deposit a film good interparticle connectivity. dye-sensitized dried at 150 °C demonstrates an overall conversion efficiency of 3.52 % under AM 1.5 (1000 W m–2) illumination. The is expected be utilizable in flexible solar cells. Supporting information for this article available on the WWW http://www.wiley-vch.de/contents/jc_2089/2005/c0288_s.pdf or from...

Doubly sensitized: Stepwise cosensitization is carried out on Al2O3-coated nanocrystalline TiO2 layers using two organic dyes (JK-2 and SQ1) having complementary spectral absorption bands in the visible region. The Al2O3 coating results retardation of interfacial charge recombination dynamics at oxide/sensitizer interface improves overall performance dye-sensitized solar cells. CB=conduction band. Supporting information for this article available WWW under...

Core-shell type nanoparticles with SnO2 and TiO2 cores zinc oxide shells were prepared characterized by surface sensitive techniques. The influence of the structure ZnO shell morphology ofnanoparticle films on performance was evaluated. X-ray absorption near-edge extended fine studies show presence thin ZnO-like around at low Zn levels. In case cores, nanocrystals are formed high Zn/Sn ratios (ca. 0.5). Scanning electron microscopy that modification changes film from a compact mesoporous to...

A quasi-solid-state dye-sensitized solar cell with novel organic sensitizers incorporating a benzothiadiazole chromophore showed excellent long-term stability, which exhibited 10% decrease during the 1000 h light soaking; optimized gave short circuit photocurrent density of 12.03 mA cm−2, an open voltage 0.720 V and fill factor 0.76, corresponding to overall conversion efficiency 6.61% under standard global AM 1.5 conditions.

Three organic sensitizers containing bis-dimethylfluorenyl amino donor and a cyanoacrylic acid acceptor bridged by p-phenylene vinylene unit were synthesized. The power conversion efficiency was quite sensitive to the length of phenylene groups. A nanocrystalline TiO2 dye-sensitized solar cell fabricated using three sensitizers. maximum JK-59 reached 7.02%.

Organic dyes with long alkyl chains have been synthesized and demonstrated to be highly efficient sensitizers for liquid quasi-solid-state solar cells, giving power conversion efficiencies of 8.31-8.39% 7.03-7.31% under AM 1.5 G irradiation, respectively.

Three new organic dyes that contain the dithienosilole (DTS) moiety as spacer have been synthesized and their photophysical/electrochemical properties, theoretical calculation dye-sensitized solar cell (DSSC) performance investigated. The overall conversion efficiencies for DSSCs based on these range from 6.73 to 7.50%, comparable a (3–5′-[N,N-bis(9,9-dimethylfluorene-2-yl)phenyl]2,2′-bithiophene-5-yl}-2-cyanoacrylic acid (JK-2)-sensitized device (7.63%), fabricated measured under same...

Dying to get inside: Charge recombination is retarded and dye aggregation prevented in solar cells that contain the JK-2 encapsulated a cyclodextrin (CD) cavity (see picture). The β-CD/JK-2 device with polymer gel electrolyte gave an overall conversion efficiency of 7.40 %, which highest value reported date for DSSCs based on organic sensitizers, showed excellent stability. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed,...

Novel star-shaped hole transporting materials (HTMs) with a bis-dimethylfluorenylamino moiety have been synthesized and evaluated for high performance perovskite solar cell applications. Maximum power conversion efficiency of 14.21% has achieved by using the HTM fused TPA core long-term stability was also shown to be comparable that .

Electron diffusion coefficient (D) and electron lifetime (τ) of mesoporous TiO2 films with Nb2O5 energy barrier were investigated by the stepped light-induced transient measurements photocurrent photovoltage, compared that without Nb2O5. Both D τ values significantly increased barrier, resulting in remarkable enhancements length optimum thickness film. As a result, could provide much more efficient dye-sensitized solar cells additional effect improved as well existing at same film thickness.

Eine extrem hohe Umwandlungseffizienz von 8.6 % unter AM1.5-Sonnenlicht wurde mit Funktionseinheiten bestehend aus JK-46 (siehe Struktur) und einem flüchtigen Elektrolyten erzielt. Solarzellen, die dem JK-46-Sensibilisator lösungsmittelfreien flüssig-ionischen gefertigt wurden, ergaben Ausbeuten über 7 zeigten bei intensiver Bestrahlung 60 °C während 1000 h exzellente Stabilitäten. Supporting information for this article is available on the WWW under...

Six organic sensitizers containing 3,4-ethylenedioxythiophene and thienothiophene in the bridged group are designed synthesized, which under standard global AM 1.5 solar conditions, device using JK-184 gave a conversion efficiency of 8.70%. The photovoltaic performance data quite sensitive to structural modification sensitizer. hexyl substituent hexyloxy on sensitizer was shown improve stability. based with an ionic liguid electolyte exhibits excellent stability after 1000 h light soaking at 60 °C.

Understanding exoelectrogenic reactions of the bioanode is limited due to its complexity and absence analytics. Impedance thermodynamics bioanode, abiotic anode, riboflavin-amended anode were evaluated. Activation overpotential was negligible compared with that anode. spectroscopy shows had much lower charge transfer resistance higher capacitance than in low frequency reaction. In high reaction, impedance parameters, however, relatively similar between At open-circuit spectroscopy, a arc not...

Abstract The feasibility of using bacterial cellulose as a source for environmentally compatible ion‐exchange membranes (IEM) was studied. Bacterial modified with cation‐exchangeable acrylic acid (AAc) by UV‐graft polymerization to prepare having capacity (IEC) and greater structural density. Fourier transform infrared (FTIR) spectra showed that acids were successfully bound cellulose. Morphological changes acid‐treated examined through scanning electron microscopy. A dense structure the...

A new class of cyclometalated ruthenium sensitizers incorporating a ĈN̂N ligand and conjugated 2,2′-bipyridine in the ancillary have been designed synthesized. The photovoltaic performance JK-206 using an electrolyte containing 0.6 M 1,2-dimethyl-3-propylimidazolium iodide, 0.05 I2, 0.1 LiI, 0.5 tert-butylpyridine CH3CN gave short-circuit photocurrent density 19.63 mA cm–2, open-circuit voltage 0.74 V, fill factor 0.72, affording overall conversion efficiency 10.39%. is highest one reported...