Showing papers in "Solar Cells in 1981"

TL;DR: In this paper, the authors considered solar cells as generators, and the classical one-diode equivalent circuit was assumed to be valid for a given light intensity, where the true circuit parameters R s, R sh, I s, and I ph were computed from the experimental data of the fourth-quadrant characteristics using a programmable calculator.

TL;DR: The physics and technology of a new class of photovoltaic devices, namely the conductor-insulator-semiconductor (CIS) solar cells, are reviewed in this article.

TL;DR: In this paper, a CdO/Cu2O junction formed at room temperature, no copper metal was found at the interface, presumably due to dislocations and impurities in the Cu2O samples as prepared.

TL;DR: Fluorescent planar collector-concentrators as mentioned in this paper are a new idea for the conversion of solar energy into electrical and thermal energy, which is possible by using a stack of transparent sheets of material doped with fluorescent dyes.

TL;DR: In this paper, high conductive transparent thin films of fluorine-doped SnO2 (SnO2:F) were prepared using spray pyrolysis and the optical data were interpreted to give a direct band gap of 4.27 eV and an indirect band gap 2.73 eV.

TL;DR: In this article, a description of the physics of operation of heavily doped diffused n+p junction solar cells based on the current understanding of heavy-doping effects is given.

TL;DR: In this article, the first p+n-n+ bifacial solar cells are presented, achieving mean efficiencies of 15.7% and 13.6% under front and back air mass one illumination respectively at 28°C.

TL;DR: In this paper, the authors derived analytical expressions for the photogenerated current and voltage of a solar cell, for the power at the maximum power point and for the curve factor of the solar cell.

TL;DR: In this article, a new method is described to provide quantitative evaluation of the overall effectiveness of antireflection coatings on optical detectors and solar cells in terms of a single parameter.

TL;DR: In this article, bypass diodes are connected across cells or groups of cells to avoid mismatch in the output of individual cells in a solar cell array, and the cell can be interconnected in the same manner as conventional cells.

TL;DR: In this article, a study of commercially available thin film conductor inks to determine their suitability for use as solar cell front electrical contacts was performed and found that most of the silver-based inks formed good electrical contacts.

TL;DR: In this paper, the theoretical bases for casting maximum energy on a cell placed in a static concentrator of minimum entry aperture were derived and several concentrators were analysed according to this theory and the gain achievable with each is obtained.

TL;DR: Taking reliability and availability into consideration early in the design at the system level will prevent some major field problems and should encourage the early development of complete photovoltaic systems that satisfy the demanding availability precedent set by the electric utilities.

TL;DR: In this article, a hybrid prototype photovoltaic-thermal collector using concentrated sunlight was studied theoretically, realized and tested, and the experimental peak electrical and thermal efficiencies were then presented as functions of temperature and concentration ratio and are compared with the efficiencies of specific collectors.

TL;DR: In this paper, a review of heavy-doping effects in silicon, of the important role of Auger recombination in silicon solar cells and of the competing band-gap-narrowing model of heavy doping effects is presented.

TL;DR: The presence of substances fluorescentes, associees en "cascade lumineuse" dans la resine polymethylmetacrylate (PMMA), enrobant les cellules solaires au silicium, permet d'accroitre de 25% le rendement de conversion des modules photovoltaiques as discussed by the authors.

TL;DR: In this article, the photoelectrochemical properties of n-type semiconducting ferric oxide (Fe2O3) were investigated using samples prepared by two different techniques: a flux-grown single crystal and a sputtered compound were used as electrodes in a photo electrochemical cell.

TL;DR: In this article, the authors describe and report on the fabrication and the most significant characteristics of 1.43 and 1.69 eV band gap Ga 1− x Al x AsGaAs solar cells, designed for high efficiency and high concentration systems.

TL;DR: In this paper, a spray-based n-(indium tin oxide (ITO))/p-InP solar cells of 11% efficiency using the spray method to deposit ITO onto single-crystal p-type InP were constructed.

TL;DR: In this paper, the kinetics of growth of chemiplated Cu 2− x S films on thermally deposited and chemically etched CdS layers were investigated. And the results revealed that for a pH value of 4.6 the growth is parabolic in nature whereas in solutions of lower pH (about 3.4) a fast linear growth mechanism dominates.

TL;DR: In this paper, an apparatus is described which is capable of depositing mixed semiconductor films by a novel co-evaporation technique, which is used to deposit a uniform mixed film of CdS x Ter 1−x with various values of the composition factor.

TL;DR: In this paper, the growth of the oxide layer has a dependence that follows the square root of time, which indicates that they can be used as antireflecting coatings on solar cells.

TL;DR: In this paper, the electron-beam-induced current (EBIC) was used to detect intragrain defects in Wacker cast and Monsanto zone-refined polycrystalline silicon materials.

TL;DR: The barrier height of aluminium Schottky diodes on hydrogenated amorphous silicon was found to increase after heat treatment at temperatures between 200 and 300 °C as discussed by the authors.

TL;DR: In this article, the effective series resistance of a solar cell can be measured easily and accurately by the following simple technique: two successive pulses of equal intensity from a high intensity flashlamp are used to measure first open-circuit voltage V oc and secondly the voltage V L across a small known series load resistance R L.

TL;DR: In this paper, a polycrystalline thin film solar cell based on alloys of CdS and CdTe is proposed and investigated, where the conductivity of both layers is controlled by simultaneous co-evaporation of suitable dopant materials.

TL;DR: In this article, a luminescent solar concentrator cell under an air mass one solar spectrum was designed for operation under illumination of 600 nm wavelength and 1 W cm −2, from these results and spectral response data an efficiency of 26% can be projected for illumination at 600 nm.

TL;DR: In this article, the effect of temperature on the short-circuit current of silicon MIS solar cells was investigated and it was shown that the short circuit current may decrease strongly with increasing temperature and this behavior depends on the oxide thickness.

TL;DR: In this paper, the authors describe the preparation and properties of ZnOp-InP heterojunction solar cells, which have an ideality factor of 1.54 and a saturation current density of 4 × 10−8 A cm−2.

TL;DR: Amorphous silicon (a-Si) solar cells with several back contact metals were investigated in this article, and it was shown that cells with highly reflecting back contacts have an increased collection efficiency in the wavelength region 600 - 700 nm.