Advanced Characterization Techniques for Thin Film Solar - download pdf or read online

By Daniel Abou-Ras, Thomas Kirchartz, Uwe Rau

ISBN-10: 3527410031

ISBN-13: 9783527410033

Written by way of scientists from best institutes in Germany, united states and Spain who use those strategies because the center in their medical paintings and who've an exact concept of what's correct for photovoltaic units, this article comprises concise and accomplished lecture-like chapters on particular examine methods.They specialize in rising, really good thoughts which are new to the sector of photovoltaics but have a confirmed relevance. even though, on account that new equipment must be judged based on their implications for photovoltaic units, a transparent introductory bankruptcy describes the elemental physics of thin-film sunlight cells and modules, delivering a advisor to the categorical merits which are provided via each one person method.The collection of topics is a consultant cross-section of these tools having fun with a excessive measure of visibility in contemporary clinical literature. moreover, they take care of particular device-related subject matters and contain a range of fabric and surface/interface research tools that experience lately confirmed their relevance. eventually, simulation thoughts are offered which are used for ab-initio calculations of proper semiconductors and for machine simulations in 1D and 2D.For scholars in physics, strong country physicists, fabrics scientists, PhD scholars in fabric sciences, fabrics institutes, semiconductor physicists, and people operating within the semiconductor undefined, in addition to being appropriate as supplementary studying in similar classes.

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Iv) The only loss mechanism in excess of the nonabsorbed photons of (i) and the thermalization losses in (v) is the j5 j 1 Introduction to Thin-Film Photovoltaics 6 spontaneous emission of photons by radiative recombination of electron–hole pairs as required by the principle of detailed balance. In order to calculate the maximum available short-circuit current Jsc,SQ as defined by (iii), we need the incoming photon flux winc and the absorptance A(E) defining the percentage of the incoming light at a certain photon energy E that is absorbed and not reflected or transmitted.

4 Absorptance as a function of photon energy for (a) a flat solar cell and (b) a textured solar cell with perfect light trapping. In both cases, the absorption coefficient a0 from Eq. 9) is varied. 4 pffiffiffiffiffi subfigures a0 ¼ 104 ; 10 Â 104 ; 105 cmÀ1 . For the same absorption coefficient, the textured solar cell has absorptances that are much closer to the perfect step function than the flat solar cell. 5 Comparison of the short-circuit current density of a flat (solid line) and a textured solar cell (dashed line) as a function of the product of a0 and the thickness d assuming an absorption coefficient according to Eq.

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Advanced Characterization Techniques for Thin Film Solar Cells by Daniel Abou-Ras, Thomas Kirchartz, Uwe Rau

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