Searched for: department:"Electrical%5C%2BSustainable%5C%2BEnergy"
(1 - 20 of 33)

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Isabella, O. (author), Kr?, J. (author), Zeman, M. (author)
Substrates with a modulated surface texture were prepared by combining different interface morphologies. The spatial frequency surface representation method is used to evaluate the surface modulation. When combining morphologies with appropriate geometrical features, substrates exhibit an increased scattering level in a broad wavelength region....
journal article 2010
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Lipovšek, B. (author), Kr?, J. (author), Isabella, O. (author), Zeman, M. (author), Topi?, M. (author)
Diffusive dielectric materials such as white paint have been demonstrated as effective back reflectors in the photovoltaic technology. In this work, a one-dimensional (1D) optical modeling approach for simulation of white paint films is developed and implemented in a 1D optical simulator for thin-film solar cells. The parameters of white paint,...
journal article 2010
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Isabella, O. (author), Battaglia, C. (author), Ballif, C. (author), Zeman, M. (author)
Nano-scale randomly textured front transparent oxides are superposed on micro-scale etched glass substrates to form modulated surface textures. The resulting enhanced light scattering is implemented in single and double junction thin-film silicon solar cells.
conference paper 2012
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Isabella, O. (author), Elshinawy, M.A.A. (author), Solntsev, S. (author), Zeman, M. (author)
Superstrate thin-film silicon triple-junction solar cells on 2-D gratings were optimized using opto-electrical modeling. Tuning the thickness of intermediate and back reflectors and the band gap of the middle cell resulted in 17% initial efficiency.
conference paper 2012
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Zeman, M. (author), Isabella, O. (author), Jäger, K. (author), Santbergen, R. (author), Solntsev, S. (author), Topic, M. (author), Krc, J. (author)
Light management is important for improving the performance of thin-film solar cells. Advanced concepts of efficient light scattering and trapping inside the cell structures need to be investigated. An important tool for design and optimisation of the concepts present optical modelling and simulation. In the article a model of light scattering...
journal article 2012
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Isabella, O. (author)
Solar energy can fulfil mankind’s energy needs and secure a more balanced distribution of primary sources of energy. Wafer-based and thin-film silicon solar cells dominate todays’ photovoltaic market because silicon is a non-toxic and abundant material and high conversion efficiencies are achieved with silicon-based solar cells. To stay...
doctoral thesis 2013
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Pahud, C. (author), Isabella, O. (author), Naqavi, A. (author), Haug, F.J. (author), Zeman, M. (author), Herzig, H.P. (author), Ballif, C. (author)
We study n-i-p amorphous silicon solar cells with light-scattering nanoparticles in the back reflector. In one configuration, the particles are fully embedded in the zinc oxide buffer layer; In a second configuration, the particles are placed between the buffer layer and the flat back electrode. We use stencil lithography to produce the same...
journal article 2013
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Tan, H. (author), Psomadaki, E. (author), Isabella, O. (author), Fischer, M. (author), Babal, P. (author), Vasudevan, R.A. (author), Zeman, M. (author), Smets, A.H.M. (author)
journal article 2013
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Si, F.T. (author), Kim, D. (author), Santbergen, R. (author), Tan, H. (author), Van Swaaij, R.A.C.M.M. (author), Smets, A.H.M. (author), Isabella, O. (author), Zeman, M. (author)
journal article 2014
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Ingenito, A. (author), Ortiz Lizcano, J.C. (author), Luxembourg, S.L. (author), Santbergen, R. (author), Weeber, A. (author), Isabella, O. (author), Zeman, M. (author)
At present, research in c-Si solar cells is focused on increasing the efficiency while reducing the amount of used materials. Since silicon wafer and metal contribute up to 50% to the cost of a module, it is crucial to reduce the amount of these materials to fabricate cost-effective modules. In particular, for reducing the consumption of metal,...
journal article 2014
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Ingenito, A. (author), Isabella, O. (author), Zeman, M. (author)
The need for cost reduction requires using less raw material and cost-effective processes without sacrificing the conversion efficiency. For keeping high the generated photo-current, an advanced light trapping scheme for ultra-thin silicon wafers is here proposed, exhibiting absorptances up to 99% of 4n2 classical absorption limit for wafer...
conference paper 2014
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Yang, G. (author), Van Swaaij, R.A.C.M.M. (author), Isabella, O. (author)
The present invention relates to a new method of texturing a glass surface. In further aspects, the present invention relates to the resulting textured glass surface; to a photovoltaic device comprising the textured glass surface; and, to use of the textured glass surface for scattering light.
patent 2015
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Di Marco, G. (author), Galogero, G. (author), Di Carlo, A. (author), Lombardo, S. (author), Palmisano, L. (author), Isabella, O. (author)
journal article 2015
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Gao, Y. (author), Dong, J. (author), Isabella, O. (author), Zeman, M. (author), Zhang, G (author)
Diverse solar irradiance spectra can be observed under different conditions of time, date, location, weather, etc. Since the solar irradiance spectrum is required by certain scientific and engineering applications, obtaining accurate spectral data is essential. Measurements by spectrophotometers are able to achieve accurate real-time data with...
conference paper 2016
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Yang, G. (author), Ingenito, A. (author), van Hameren, Nienke (author), Isabella, O. (author), Zeman, M. (author)
Ion-implanted passivating contacts based on poly-crystalline silicon (polySi) are enabled by tunneling oxide, optimized, and used to fabricate interdigitated back contact (IBC) solar cells. Both n-type (phosphorous doped) and p-type (boron doped) passivating contacts are fabricated by ion-implantation of intrinsic polySi layers deposited via low...
journal article 2016
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Isabella, O. (author), Vismara, R. (author), Ingenito, A. (author), Rezaei, N. (author), Zeman, M. (author)
The optical analysis of optically-textured and electrically-flat ultra-thin crystalline silicon (c-Si) slabs is presented. These slabs were endowed with decoupled front titanium-dioxide (TiO2) / back silicon-dioxide (SiO2) dielectric textures and were studied as function of two types of back reflectors: standard silver (Ag) and dielectric...
journal article 2016
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Onwudinanti, Chidozie (author), Vismara, R. (author), Isabella, O. (author), Grenet, Louis (author), Emieux, Fabrice (author), Zeman, M. (author)
We have used 3-D optical modelling to investigate light management concepts based on periodic textures and material optimization for photovoltaic devices based on Cu(In,Ga)Se2 (CIGS) absorber material. At first, calibration of the software based on the characterization of a reference (1500-nm thick) CIGS device was carried out. The effects of 1...
journal article 2016
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Si, F.T. (author), Isabella, O. (author), Zeman, M. (author)
Multijunction solar cells promise higher power-conversion efficiency than the single-junction. With respect to two-terminal devices, an accurate measurement of the spectral response requires a delicate adjustment of the light- and voltage-biasing; otherwise it can result in artifacts in the data and thus misinterpretation of the cell properties....
journal article 2016
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Yang, G. (author), Ingenito, A. (author), Isabella, O. (author), Zeman, M. (author)
Ion-implanted poly-crystalline silicon (poly-Si), in combination with a tunnel oxide layer, is investigated as a carrier-selective passivating contact in c-Si solar cells based on an interdigitated back contact (IBC) architecture. The optimized poly-Si passivating contacts enable low interface recombination, resulting in implied VOC (iVOC) of...
journal article 2016
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van de Loo, B.W.H. (author), Ingenito, A. (author), Verheijen, M.P.A.M. (author), Isabella, O. (author), Zeman, M. (author)
Black silicon (b-Si) nanotextures can significantly enhance the light absorption of crystalline silicon solar cells. Nevertheless, for a successful application of b-Si textures in industrially relevant solar cell architectures, it is imperative that charge-carrier recombination at particularly highly n-type doped black Si surfaces is further...
journal article 2017
Searched for: department:"Electrical%5C%2BSustainable%5C%2BEnergy"
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