Showing papers in "Solar Energy Materials and Solar Cells in 2004"

TL;DR: In this paper, an overview of the development of organic photovoltaics is given, with emphasis on polymer-based solar cells, where different strategies have been used to gain better control over the morphology and further improve efficiency.

TL;DR: In this paper, the economical and technical production aspects for organic photovoltaics are discussed and the key property which makes organic PV so attractive is the potential of reel to reel processing on low cost substrates with standard coating and printing processes.

TL;DR: In this article, an exact closed-form solution based on Lambert W -function is presented to express the transcendental currentvoltage characteristic containing parasitic power consuming parameters like series and shunt resistances.

TL;DR: A review of the various solar hybrid beam splitting systems proposed in the literature and the different spectrum splitting strategies employed is presented in this article, where the authors present a review of different spectrum-splitting strategies employed.

TL;DR: In this paper, the authors show that water, with a refractive index of 1.3, is a viable intermediary between glass (nglass = 1.5) and air (nair=1.0).

TL;DR: In this paper, the photocatalytic decolourisation and degradation of an azo dye reactive orange 4 (RO4) in aqueous solution with TiO 2 -P25 (Degussa) as photocatalyst in slurry form have been investigated using solarlight.

TL;DR: In this paper, the possibility of making large area (100 cm 2 ) polymer solar cells based on conjugated polymer poly 1,4-(2methoxy-5-ethylhexyloxy)phenylenevinylene (MEH-PPV) was demonstrated by etching an electrode pattern on ITO covered polyethyleneterephthalate (PET) substrates.

TL;DR: In this paper, X-ray diffraction analysis of vacuum-evaporated cadmium telluride (CdTe) films reveals that the structure of the films is polycrystalline in nature for the samples prepared at higher substrate temperatures.

TL;DR: In this paper, a photovoltaic device based on regioregular poly(3-hexylthiophene) (P3HT) and ([6,6]-phenyl-C61-butyric acid methyl ester) (PCBM) was fabricated and characterized using 5×5 cm ITO polyester foils with an active cell area of 0.5×0.5 cm 2.

TL;DR: A series of nip-type microcrystalline silicon (mc-Si:H) single-junction solar cells has been studied by electrical characterisation, by transmission electron microscopy (TEM) and by Raman spectroscopy using 514 and 633 nm excitation light and both top and bottomillumination as discussed by the authors.

TL;DR: In this paper, a 0.1-M Zn(NO 3 ) 2 solution with the initial pH adjusted to 6.0, different electrodeposition potentials from E =−700 to −1200 ǫmV (saturated calomel electrode, SCE).

TL;DR: In this paper, the optical, structural and electronic properties of amorphous and crystalline molybdenum oxide thin films have been investigated using reflectance and transmittance data.

TL;DR: In this paper, the room-temperature bandgap energies for each sample were determined from the transmittance by two different methods: extrapolating absorption coefficient and first derivative peak position.

TL;DR: In this paper, two novel porous materials, which have been foreseen as volumetric receivers for concentrated solar radiation: a double-layer silicon carbide foam and a screen-printed porous material, are reported.

TL;DR: In this paper, a simple model is proposed to explain both the observed differences in device behavior as copper is added or removed from the contact region, and how copper movement depends on electrical bias.

TL;DR: In this article, an antireflection (AR) coating for the VO 2 -based window was proposed, which achieved an improvement in the maximum integrated luminous transmittance (T lum) from 32% to 55% for 50-nm VO 2 films.

TL;DR: In this paper, the influence of front TCO thickness, surface texture and different back reflectors on short-circuit current density and fill factor of thin film silicon solar cells were investigated.

TL;DR: In this article, the effects of film thickness, codeposition and introduction of exciton blocking layers are investigated for heterojunction photovoltaic devices based on copper phthalocyanine (CuPc) and fullerene (C60).

TL;DR: In this paper, nano-crystalline CdTe and nano-structured CdS films in crystalline, porous and fiber forms were deposited on ITO-coated glass substrates.

TL;DR: The correlation between morphology of the films and photoelectrochemical characteristics of dye-sensitized solar cells fabricated from these films was investigated in this paper, where the amount of the adsorbed dye (Adye) on the film and photocurrent of the cell were proportional to the roughness factor (rf) of the film, but did not depend on the particle size and pore size of the panels under rf 3 Sun.

TL;DR: In this article, nanosized TiO2 powders for photocatalytic degradation of organic pollutants are prepared by sol-gel method by synthesizing by hydrolysis and controlled condensation of titanium isopropoxide Ti(O-iC3H7)4.

TL;DR: In this article, the authors used photocurrent imaging techniques to determine characteristic patterns of efficiency and degradation of bulk-heterojunction plastic solar cells (PSC) produced from a conjugated polymer, poly(2-methoxy-5-(3′,7′-dimethyl octyl-oxy)-1,4-phenylenevinylene) (MDMO-PPV), and a methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM).

TL;DR: Electrochromism in Nickel Oxide Films Containing Mg, Al, Si, V, Zr, Nb, Ag, or Ta, Solar Energy Mater.

TL;DR: In this article, the photovoltaic panel (PVP) area is shown to be much smaller than that of the solar collector, and the performance of different panels in the hybrid PV-thermal system was investigated, in particular, those made of crystalline (c-) Si, α-Si and CuInSe2 as well as different materials and constructions for the thermal contact between the panel and the collector.

TL;DR: In this article, the morphology of electrosynthesized poly(3-methylthiophene) (P3MT) thin films was analyzed by atomic force microscopy and different film morphologies were found for different electrodeposition technique and solution temperature.

TL;DR: A stack of luminescent solar concentrator sheets has been developed, which utilises three different coloured fluorescent dyes to produce a concentrated near-white light source to be coupled into flexible polymer sheets and transported up to 10m as discussed by the authors.

TL;DR: In this paper, high quality SnO 2 :F films were grown on glass substrates at relatively low temperatures of 325-340°C by intermittent spray pyrolysis deposition using a perfume atomizer for cosmetics use.

TL;DR: In this article, Al 2 O 3 -coated TiO 2 porous films were used to fabricate solid-state dye-sensitized solar cells using CuI as hole conductor.

TL;DR: In this paper, the authors review the concept of defects in amorphous materials with a special emphasis on tungsten oxide coatings produced by sputter deposition, and discuss the character of localized electronic states giving rise to the electrochromic effect upon proton or lithium intercalation.

TL;DR: In this paper, the n-p junction electrode fabricated coating nanocrystalline SnO 2 thin film with a thin layer of p-type NiO was found to increase the sensitized photocurrent and photovoltage.