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Since the solar cell efficiency is defined as
This dissertation focuses on developing materials for replacing CdS and ZnO films to improve the damp-heat stability of the solar cells and for minimizing the use of Cd.
A simple silicon solar cell with top p-type contacts (cathode) and an n type bulk with back substrate contact is used. A cell of 4 mm2 and 100 micron thick was created using Victory Process ( Cell Mode ) employing a mask set for the implants and metallization layer. A simple basic process flow involving two implants and anneal steps as well as the Aluminium metallization for the top contacts was used.
CIGS Solar Cells: How and Why is their Cost Falling?
Since this is a large solar cell structure of 4 mm2 or 4 million μm2, careful device meshing of the final structure suitable for the Victory Device simulation was needed. The conformal meshing algorithm generated more than 1.2 million nodes and 70 million tetrahedral, while the Delaunay mesh algorithm produced 65k nodes and less than 300k tetrahedral. For the Delaunay mesh adaptive refinement based on the distance to the p-n junction was used. This leads to a significant speed up of the device calculations.
Modelling and Optimization of CIGS Solar Cell Modules Joar Johansson Master s Thesis December 2007 Supervisors: Uwe Zimmermann Marika Edo Examiner: Björn Karlsson.
CIGS Solar Cells: How and Why is their Cost ..
Jenny Nelson is a Professor of Physics at Imperial College London, where she has researched novel varieties of material for use in solar cells since 1989. Her current research is focussed on understanding the properties of molecular semiconductor materials and their application to organic solar cells. This work combines fundamental electrical, spectroscopic and structural studies of molecular electronic materials with numerical modelling and device studies, with the aim of optimising the performance of solar cells based on molecular and hybrid materials. Since 2010 she has been working together with the Grantham Institute for Climate Change to explore the mitigation potential of photovoltaic, and other renewable, technologies. She has published over 200 articles in peer reviewed journals, several book chapters and a book on the physics of solar cells. She was awarded the 2009 Institute of Physics Joule Prize and medal and the 2012 Royal Society Armourers and Brasiers Company Prize for her research.
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Nov 27, 2013 5.3.5 17.7% efficiency CIGS solar cell on SS substrate In this thesis several aspects of the electronic transport which limit the efficiency.
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Degradation of CIGS solar cells :: TNO Repository
Solar cells suffer from optical losses. These limit the total number of photogenerated carriers. Add to that, carriers suffer from electronic (recombination) losses. Using numerical simulations these losses can be quantified and minimized.
the degradation behaviour of complete CIGS solar cells
An alternative approach useful for regular geometrical shape contacts such as used has been added in Version V 7.1.11 onwards. The new feature implemented on the specifymaskpoly statement allows users to convert circular shapes to regular polygons using “npoints” and “radius” to define the number of regular sides and the radius length.
The device calculations were performed using the Victory Device paralyzed linear iterative solver PAM. Raytracing was used to propagate the light into the solar cell. This robust algorithm is valid since no complex coherence effects were anticipated in the structure used in here. To expedite the calculations, the incoming beam was limited to a monochromatic beam with a wavelength of 0.6 μm. A full solar spectrum could be used which might produce more representative results. Nevertheless, the methodological approach remains the same.
E lectri cal parameter s of CIGS solar cell are a ..
Among the many design criteria for solar cells, the design of the top metal contact impacts the cell efficiency. The areal density of the top contact modifies the magnitude of the cell output power significantly.
phd thesis on dye sensitized solar cells
Nam-Gyu Park is professor and SKKU-Fellow at School of Chemical Engineering, Sungkyunkwan University. He received his B.S., M.S. and Ph.D. from Seoul National University in 1988, 1992 and 1995, respectively. He worked at ICMCB-CNRS, France, from 1996 to 1997 and at National Renewable Energy Laboratory, USA, from 1997 to 1999 as postdoctoral researchers. He worked as Director of Solar Cell Research Center at Korea Institute of Science and Technology (KIST) from 2005 to 2009 and as a principal scientist at Electronics and Telecommunications Research Institute (ETRI) from 2000 to 2005 before joining Sungkyunkwan University as a full professor in 2009. He has been doing researches on high efficiency mesoscopic nanostructured solar cells since 1997. He is pioneer of solid state perovskite solar cell, which was first developed in 2012. He received awards, including Scientist Award of the Month (MEST, Korea), KyungHyang Electricity and Energy Award (KEPCO, Korea), KIST Award of the Year (KIST, Korea), Dupont Science and Technology Award (Dupont Korea), SKKU fellowship, MRS Outstanding Research Award (MRS, Boston), WCPEC Paper Award (Kyoto, Japan), Hamakawa Award of PVSEC (Busan, Korea) and KAST Engineering Award (KAST, Korea). He is a fellow of Korean Academy of Science and Technology (KAST). He published over 230 peer-reviewed scientific papers, including Science, Nature Materials, Nature Nanotechnology, Nature Energy and Nature Communications, 80 patent applications, 1 book editor, 7 book chapters. He received H-index of 70 (Google Scholar) as of August 2017.
Modelling and Optimization of CIGS Solar Cell Modules ..
These cells produced similar open circuit voltage Voc of about 0.65 V. Although the largest hexagon solar cell produces 6% more short circuit current Isc the associated benefit is counteracted by 16% lower fill factor FF of 0.61 compared to a FF of 0.71 for the other two cells.
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