Journal ArticleDOI
16. 7% efficient, laser textured, buried contact polycrystalline silicon solar cell
TLDR
In this article, a laser texturing technique on the top surface of a laser grooved, buried top contact polycrystalline silicon solar cell has been employed, which has demonstrated an independently confirmed 16.7% (air mass 1.5, 25°C) efficiency.Abstract:
In the evolution of single‐crystal silicon solar cells, crystallographic texturing of the cell surface using anisotropic etches was an important step in improving cell performance. Unfortunately, this technique is ineffective for polycrystalline silicon solar cells due to generally unfavorable grain orientation. This limitation has been overcome by employing a new laser texturing technique on the top surface of a laser grooved, buried top contact polycrystalline silicon solar cell. This approach has demonstrated an independently confirmed 16.7% (air mass 1.5, 25 °C) efficiency for a 10.5 cm2 polycrystalline silicon solar cell, the highest efficiency ever reported for a polycrystalline cell of this size.read more
Citations
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Journal ArticleDOI
Solar photovoltaic electricity: Current status and future prospects
T. M. Razykov,T. M. Razykov,Chris Ferekides,Don L. Morel,Elias K. Stefanakos,H.S. Ullal,Hari M. Upadhyaya +6 more
TL;DR: In this paper, the technical progress made in the past several years in the area of mono- and polycrystalline thin-film photovoltaic (PV) technologies based on Si, III-V, II-VI, and I-III-VI2 semiconductors, as well as nano-PV.
Book ChapterDOI
Fundamentals of Laser-Material Interaction and Application to Multiscale Surface Modification
Matthew S. Brown,Craig B. Arnold +1 more
TL;DR: In this article, the fundamental principles governing laser propagation and absorption as well as the resulting material responses are discussed, and two case studies of improving efficiency in photovoltaic and optoelectronic devices are presented.
Journal ArticleDOI
Efficient light trapping in silicon solar cells by ultrafast-laser-induced self-assembled micro/nano structures
TL;DR: In this paper, a novel ultrafast laser processing technique is used to create self-assembled micro/nano structures on a silicon surface for efficient light trapping, and the total efficiency of over 14% and high external quantum efficiency (EQE) results on photovoltaic devices fabricated on the ultrafast-laser-induced micro-nano structured silicon wafer.
Journal ArticleDOI
Optical and electrical properties of laser texturing for high-efficiency solar cells
Malcolm Abbott,Jeffrey E. Cotter +1 more
TL;DR: In this article, a process using laser-ablated pits to texture the front surface of monocrystalline and multicrystalline silicon solar cells is described, and optical and electrical characterization demonstrates that the technique performs as well as upright random pyramid texturing and causes no laser-induced defects or laser shunting.
Journal ArticleDOI
Optical properties of silicon light trapping structures for photovoltaics
TL;DR: In this paper, an ultrafast laser texturing method that successfully reduces the reflection below 5% over a broad spectral and angular range and more importantly, is applicable to crystalline, multi-crystalline, thin film silicon and other materials.
References
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Book
Solar Cells: Operating Principles, Technology, and System Applications
TL;DR: In this paper, the solar source of light energy is described and quantified, along with a review of semiconductor properties and the generation, recombination, and the basic equations of photovoltaic device physics.
Journal ArticleDOI
20% efficiency silicon solar cells
Andrew Blakers,Martin A. Green +1 more
TL;DR: In this paper, the use of micro-grooved surfaces which retain the advantages of pyramidally textured surfaces while avoiding some disadvantages of the latter has been proposed, which results in a 5-6% improvement in cell short-circuit current density for cells fabricated on 0.1 and 0.2 Ω cm (p type) substrates.
Journal ArticleDOI
17.8-percent efficiency polycrystalline silicon solar cells
TL;DR: In this article, a substantial increase in the efficiency of cast polycrystalline solar cells was achieved by incorporating phosphorus pretreatment and rear aluminium treatments into the passivated emitter solar cell (PESC) sequence.
Journal ArticleDOI
High-efficiency, laser grooved, buried contact silicon solar cells
TL;DR: In this paper, the performance of silicon solar cells based on a novel, laser grooved, buried contact approach is described, achieving energy conversion efficiency as high as 19.8% for cells of 12 cm2 area.
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Optical and electrical properties of laser texturing for high-efficiency solar cells
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