Open Access
Improvements in silicon solar cell efficiency
Martin A. Green,Andrew Blakers,S. R. Wenham,S. Narayanan,M. R. Willison +4 more
- pp 39-42
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TLDR
In this article, the effect of substrate resistivity on PESC cell performance is described and the performance of cells on both 0.5 ω cm Czochralski and float zone substrates.Abstract:
Abstract The passivated emitter solar cell (PESC) structure has been responsible for recent improvements in silicon solar cell performance. The effect of substrate resistivity upon PESC cell performance is described. Also described is the performance of cells on both 0.5 ω cm Czochralski and float zone substrates. Finally recent results are described which have resulted in 19.8% energy conversion efficiencies measured relative to NASA calibrated reference cells.read more
Citations
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Journal ArticleDOI
Optimized antireflection coatings for high-efficiency silicon solar cells
Jianhua Zhao,Martin A. Green +1 more
TL;DR: In this paper, the effect of a thin passivating silicon dioxide layer under the double-layer antireflection coating was also considered, and a new half-quarter-wavelength double layer AA was achieved with very low reflection if the passivating oxide has to be thicker than this critical thickness.
Journal ArticleDOI
Industrial Silicon Wafer Solar Cells
Dirk-Holger Neuhaus,Adolf Münzer +1 more
TL;DR: In this article, the main efficiency losses of screen printing-based silicon solar cells are analyzed to demonstrate the future efficiency potential of this type of solar cell and the requirements a new solar cell technology has to fulfill to have an advantage over the current approach.
Journal ArticleDOI
Studies of diffused phosphorus emitters: saturation current, surface recombination velocity, and quantum efficiency
TL;DR: In this paper, the surface recombination velocity s for silicon surfaces passivated with thermal oxide was experimentally determined as a function of surface phosphorus concentration for a variety of oxidation, anneal, and surface conditions.
Journal ArticleDOI
27.5-percent silicon concentrator solar cells
TL;DR: In this paper, optical light trapping was used to enhance the absorption of weakly absorbed near bandgap light, achieving one-sun efficiencies under an AM1.5 spectrum normalized to 100 mW/cm2.
Proceedings ArticleDOI
A new method for accurate measurements of the lumped series resistance of solar cells
TL;DR: In this paper, the authors used the measured "J/sub SC/-V/sub OC/ curve" of a solar cell as an approximation to the unknown R/sub S/-corrected I-V curve and determined the "lumped series resistance" in dark and illuminated operating conditions (R/sub s.dark/ and R/ sub s.light/) from the voltage shift between the "J /sub SC/V/ sub O/C curve" and the dark and illumination I -V curve, respectively.
References
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Journal ArticleDOI
Limits on the open-circuit voltage and efficiency of silicon solar cells imposed by intrinsic Auger processes
TL;DR: The upper bound on the open-circuit voltage of a 300 µm-thick silicon cell is 750 mV (AMO, 25°C) irrespective of substrate resistivity as discussed by the authors.
Journal ArticleDOI
19.1% efficient silicon solar cell
TL;DR: In this article, the authors reported substantial improvements in silicon solar cell performance due to improved cell open circuit voltage obtained by improved passivation of the cell emitter region and careful attention to optical design and to the minimization of parasitic resistances.
Journal ArticleDOI
Characterization of high‐efficiency silicon solar cells
TL;DR: In this article, the results of a more detailed optical and electrical characterization of these devices were described, and it was shown that the high performance of the cells is due to a high optical efficiency and near ideal junction characteristics combined with low parasitic resistance losses.
Journal ArticleDOI
Optical absorption of thin film on a Lambertian reflector substrate
TL;DR: In this article, the optical absorption of thin films deposited on a Lambertian reflector substrate was derived for a 0.5-µm a-SiH x (bandgap 1.7 eV) solar cell.