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Kafle B.,Fraunhofer Institute for Solar Energy Systems | Seiffe J.,Fraunhofer Institute for Solar Energy Systems | Hofmann M.,Fraunhofer Institute for Solar Energy Systems | Clochard L.,Nines Photovoltaics | And 2 more authors.
Physica Status Solidi (A) Applications and Materials Science | Year: 2014

A novel atmospheric pressure dry texture process is investigated in order to create nanostructures at the c-Si surface. The texture process uses diluted molecular fluorine (F2) as the process gas. F2 is partially dissociated at an elevated temperature before it is delivered to the c-Si wafer. Thermal activation of fluorine occurs on Si wafer surface in a dissociative chemisorption process leading to the removal of Si in the form of volatile SiFx species. The etching process can be controlled to form nanostructures with different aspect ratios and surface reflection values. In this work, we dry textured multicrystalline (mc) Si wafers to reach weighted surface reflection ∼12% in the wavelength range of 250-1200nm. Nanotextured mc Si wafers were used to prepare p-type Al-BSF solar cells. The fabricated nanostructured cells show a gain in short circuit current (Jsc) of ∼0.5mA/cm2 and reached a conversion efficiency of 17.3%. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Kafle B.,Fraunhofer Institute for Solar Energy Systems | Schon J.,Fraunhofer Institute for Solar Energy Systems | Fleischmann C.,Fraunhofer Institute for Solar Energy Systems | Werner S.,Fraunhofer Institute for Solar Energy Systems | And 5 more authors.
Solar Energy Materials and Solar Cells | Year: 2016

In this paper, we study the effect of an enlarged surface area of nanotextured crystalline silicon wafers on the formation of n-type emitters using a tube diffusion process applying POCl3 as P dopant source. A fast, single-step and industrially viable F2-based dry texturing process is used to perform nanotexturing of Si wafers. This process is presented as an alternative route of nanotexturing in comparison to the two-step nanotexturing approach of creating black silicon and then modifying it with an alkaline or acidic solution. Predictive simulations of phosphorous in-diffusion aided by microscopical characterization of the selected emitters are used to understand the formation of emitter in nanotextured surfaces. Based on these investigations, we show that the optimized emitter leads to a significant improvement in short circuit current density (Jsc≥0.7 mA/cm2) of nanotextured mc-Si solar cells in comparison to the industrial standard acidic textured solar cells. © 2016 Elsevier B.V. All rights reserved.


Kafle B.,Fraunhofer Institute for Solar Energy Systems | Mannan A.,Fraunhofer Institute for Solar Energy Systems | Freund T.,Fraunhofer Institute for Solar Energy Systems | Clochard L.,Nines Photovoltaics | And 4 more authors.
Physica Status Solidi - Rapid Research Letters | Year: 2015

We report recent achievements in adapting industrially used solar cell processes on nanotextured surfaces. Nanostructures were etched into c-Si surfaces by dry exothermic plasma-less reaction of F species with Si in atmospheric pressure conditions and then modified using a short post-etching process. Nanotextured multicrystalline wafers are used to prepare Al-BSF solar cells using industrially feasible solar cell proc- essing steps. In comparison to the reference acidic textured solar cells, the nanostructured cells showed gain in short circuit current (Jsc) of up to 0.8 mA/cm2 and absolute gain in conversion efficiency of up to 0.3%. The best nanotextured solar cell was independently certified to reach the conversion efficiency of 18.0%. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Nines Photovoltaics | Entity website

PROCESS TOOLS The first tool that was launched on the market is the 9sADE100 which is aimed at the R&D/Pilot Production line market. The 9sADE100 introduces our customers to the ADE Process and to the flexibility it offers in developing new cell architectures & process flows ...


Nines Photovoltaics | Entity website

HOW IT WORKS The ADE (Atmospheric Dry Etching) technology provides a new way of carrying out dry gaseous etching without the limitations of other common vacuum plasma based technologies. The ADE process works at atmospheric pressure and does not require a plasma or the containment of a vacuum ...


Nines Photovoltaics | Entity website

Development of a competitive 0 Global Warming Potential (GWP) dry process to reduce the dramatic water consumption in the ever-expanding solar cell manufacturing industry. Project acronym:SOLNOWAT Type of funding scheme:Capacities Research for the benefit of SMEs FP7-SME-2011- BSG The project (SOLNOWAT) aims to develop a dry route alternative for the solar cell industry that will eliminate the very high water consumption and GWP emissions of current process while meeting all production requirements ...


Nines Photovoltaics | Entity website

Intersolar Europe 2015 NINES PV will attend from the 9th to the 11th of June, Munich. Intersolar Europe takes place annually at Messe Mnchen ...


Nines Photovoltaics | Entity website

About Us Nines Photovoltaics was established in 2010, with a dedicated team that is focused on bringing new innovative process technology, machinery and equipment to the international Photovoltaic (PV) solar cell manufacturing industry. The company is based in Dublin, Ireland ...


News Article | September 12, 2013
Site: www.finsmes.com

Backers included the Bank of Ireland Seed and Early Stage Equity Fund, managed by Kernel Capital, and existing investor Business Venture Partners (BVP), which committed €350k together, and others. The company intends to use the funds to complete the process development work and launch the product into the market. Led by Edward Duffy, CEO, Nines Photovoltaics is now validating its first silicon wafer processing tool in a production environment in collaboration with Fraunhofer ISE in Freiburg, Germany. To date, the company has demonstrated improved reflection properties of solar cells advancing energy capture and efficiency.

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