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Showing papers in "Solar Energy Materials and Solar Cells in 2007"


Journal ArticleDOI
TL;DR: Transparent conductors (TCs) have a multitude of applications for solar energy utilization and for energy savings, especially in buildings as discussed by the authors, which leads naturally to considerations of spectral selectivity, angular selectivity, and temporal variability of TCs, as covered in three subsequent sections.

1,471 citations


Journal ArticleDOI
TL;DR: Low band gap polymer materials and their application in organic photovoltaics (OPV) are reviewed in this paper, where the authors provide a compilation of the most studied classes of low band gap materials.

1,317 citations


Journal ArticleDOI
TL;DR: In this article, the authors used the Kubelka-Munk radiative transfer model to measure the diffuse reflectance of TiO2 semiconductor coatings, such as are used for water splitting, and found that while the band gap wavelength is extended into the visible region, it is overestimated.

756 citations


Journal ArticleDOI
TL;DR: In this article, three ways in which the cell efficiency of silicon solar cells may be improved by better exploitation of the solar spectrum: down-conversion (cutting one high energy photon into two low energy photons), photoluminescence (shifting photons into wavelength regions better accepted by the solar cell), and up-converting (combining low-energy photons to one high-energy photon).

585 citations


Journal ArticleDOI
TL;DR: In this paper, a dye-sensitized solar cells were fabricated using natural dyes extracted from rosella, blue pea and a mixture of the extracts, which showed synergistic light absorption and photosensitization compared to the individual extracts.

526 citations


Journal ArticleDOI
TL;DR: In this article, a large area (>10 cm 2 ) interconnected organic solar cell modules are reported, both on glass substrates as well as on flexible ultra-high barrier foils, reaching 1.5% and 0.5 % overall power conversion efficiency under AM1.5 conditions.

479 citations


Journal ArticleDOI
TL;DR: In this paper, the authors present a review of five different methods to determine the series resistance RS of solar cells and an experimental investigation of these to find the most reliable and robust method(s) for cell characterization under operating conditions.

468 citations


Journal ArticleDOI
TL;DR: In this paper, a single phase CZTS thin film was prepared by sulfurizing precursors deposited by the sol-gel method, and the chemical composition of the films was almost stoichiometric and the band gap energy was 1.49 eV.

347 citations


Journal ArticleDOI
TL;DR: In this article, the short-circuit current density of organic solar cells based on poly (3hexylthiophene)(P3HT)/6,6-phenyl C61-butyric acid methyl ester (PCBM) blend is investigated.

288 citations


Journal ArticleDOI
TL;DR: In this paper, a modified 3-diode equivalent circuit model for analysis of multicrystalline silicon (Mc-Si) solar cells was proposed to precisely evaluate the characteristics of Mc-Si solar cells taking the influence of grain boundaries and large leakage current through the peripheries into consideration and extract electrical properties.

277 citations


Journal ArticleDOI
TL;DR: In this article, the authors describe methods for creating solar-reflective nonwhite surfaces and their application to a wide variety of residential roofing materials, including metal, clay tile, concrete tile, wood, and asphalt shingle.

Journal ArticleDOI
TL;DR: In this article, the photocatalytic reduction of carbon dioxide (CO 2 ) was studied in a self-designed circulated photocatalysis reaction system under titanium dioxide (TiO 2, Degussa P-25) and zirconium oxide (ZrO 2 ) photocatalyststs and reductants at room temperature and constant pressure.

Journal ArticleDOI
TL;DR: In this article, the authors demonstrate that EVA will decompose to produce acetic acid that will lower the pH and generally increase surface corrosion rates and this enhanced corrosion is demonstrated in this work using aluminum mirrors deposited on glass.

Journal ArticleDOI
TL;DR: In this article, a large variation of the short-circuit current, which does not correspond to the device thickness as one might expect, was found in organic bulk-heterojunction solar cells, and it was observed that devices with a thick absorber layer might consist of a conductive bulk region and a poorly conductive depletion region at the metal contact.

Journal ArticleDOI
TL;DR: In this paper, the authors presented a new technique for the evaluation of the parameters of illuminated solar cell with a single diode lumped circuit model and considering the series and shunt resistances.

Journal ArticleDOI
TL;DR: In this paper, the influence of oxygen sputters gas pressure on the structural, optical and electrochromic properties of tungsten oxide (WO 3 ) thin films has been investigated.

Journal ArticleDOI
TL;DR: A new model of photovoltaic fields is introduced that allows the simulation of a PV generator whose subsections, e.g. cells, groups of cells, panels or group of panels, work under different solar irradiation values and/or at different temperatures.

Journal ArticleDOI
TL;DR: In this paper, the conductivity of PEDOT:PSS films was investigated using polar solvent-treated poly(3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT):PSS) coating on a conductive glass (fluorine-doped tin oxide, FTO) as a counter electrode.

Journal ArticleDOI
TL;DR: In this article, solution-processed bilayer heterojunction hybrid solar cells have been fabricated using size-quantized PbS nanoparticles and poly (3-hexylthiophene) (P3HT).

Journal ArticleDOI
TL;DR: In this paper, the porosity of monolithic multi-channeled silicon carbide (SiC) honeycombs employed as open volumetric receivers of concentrated solar radiation was evaluated with respect to their porous structure and thermomechanical properties before and after long-time operation.

Journal ArticleDOI
TL;DR: In this paper, a dye-sensitized solar cells (DSSC) using vertically oriented, high density, and crystalline array of ZnO nanowires was proposed, which is a suitable alternative to titanium dioxide nanoparticle films.

Journal ArticleDOI
TL;DR: Amin et al. as mentioned in this paper investigated the viability of CdTe thickness reduction to 1μm together with the insertion of higher band-gap materials (i.e., ZnTe) at the back contacts to reduce carrier recombination loss there.

Journal ArticleDOI
TL;DR: In this article, a solid-solid phase change heat storage material was synthesized via the two-step condensation reaction of high molecule weight polyethylene glycol (PEG10000) with pentaerythritol (PE) and 4,4′-diphenylmethane diisocyanate (MDI).

Journal ArticleDOI
TL;DR: In this article, a new approach is presented in order to improve the thermal stability of polymer: [6-6]-phenyl C61 butyric acid methyl ester (PCBM) bulk heterojunction solar cells.

Journal ArticleDOI
TL;DR: Durisch et al. as discussed by the authors proposed a new method for the calculation of the annual yield of photovoltaic (PV) modules at selected sites, using site-specific meteorological data.

Journal ArticleDOI
TL;DR: In this article, aluminum doping in CdO thin films was confirmed by X-ray photoelectron spectroscopic studies and actual doping percentages were also measured from it, and the deposited films were characterized by studying their structural, electrical and optical properties.

Journal ArticleDOI
TL;DR: In this paper, an attempt has been made to evaluate the overall performance of hybrid PV/thermal (PV/T) air collector and an analytical expression similar to Hottel-Whiller-Bliss (HWB) equation for flat plate collector has also been derived in terms of design and climatic parameters.

Journal ArticleDOI
TL;DR: In this article, the phase and morphology of ZnO nanosheets were investigated by using transmission electron microscope, scanning electron microscope and X-ray diffraction, and absorbance spectra were measured by using a UV-vis spectrophotometer.

Journal ArticleDOI
TL;DR: In this paper, the impact of environmental factors, especially solar spectrum distribution and module temperature, on the outdoor performance of amorphous Si and multicrystalline Si (mc-Si) PV modules is characterized.

Journal ArticleDOI
TL;DR: In this paper, the degradation efficiency of AC-ZnO composite photocatalyst was evaluated with solar light using an azo dye Direct blue 53 (DB53) at room temperature.