Silver nanodiscs for light scattering in thin epitaxial silicon solar cells: influence of the disc radius

2012 ◽  
Vol 1391 ◽  
Author(s):  
O. El Daif ◽  
L. Tong ◽  
B. Figeys ◽  
S. Jain ◽  
V. D. Miljkovic ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Front Surface ◽  
Antireflection Coating ◽  
Silicon Solar Cells ◽  
Silicon Substrates ◽  
Epitaxial Silicon ◽  
Loss Mechanism ◽  
Absorption Increase ◽  
Through Hole

ABSTRACTThe effect of silver nanoparticles showing localised plasmonic resonances on the efficiency of thin film silicon solar cells is studied. Silver (Ag) nanodiscs were deposited on the surface of silicon cells grown on highly doped silicon substrates, through hole-mask colloidal lithography, which is a low-cost and bottom-up technique. The cells have no back reflector in order to exclusively study the effect of the front surface on their properties. Cells with nanoparticles were compared with both bare silicon cells and cells with an antireflection coating. We optically observe a resonance showing an absorption increase controllable by the disc radius. We also see an increase in efficiency with respect to bare cells, but we see a decrease in efficiency with respect to cells with an antireflection coating due to losses at wavelengths below the plasmon resonance. As the material properties are not notably affected by the particles deposition, the loss mechanism is an important absorption in the nanoparticles. We confirm this by numerical simulations.

Effects of heat treatment on epitaxial silicon solar cells on metallurgical silicon substrates

Solar Cells ◽  
1981 ◽  
Vol 5 (1) ◽  
pp. 29-38 ◽  
Author(s):  
T.L. Chu ◽  
Shirley S. Chu ◽  
L.L. Kazmerski ◽  
Ray Whitney ◽  
C.L. Lin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Silicon Solar Cells ◽  
Silicon Substrates ◽  
Epitaxial Silicon ◽  
Metallurgical Silicon

Defect Studies in Solar Cell Silicon

1982 ◽  
Vol 40 ◽  
pp. 434-437
Author(s):  
B. Cunningham
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Low Cost ◽  
Structural Defects ◽  
Silicon Solar Cells ◽  
Silicon Substrates ◽  
Float Zone ◽  
Chemical Impurities ◽  
Heat Shields ◽  
Growth Methods

IntroductionOne of the requirements for low-cost silicon solar cells is that the silicon substrates be relatively inexpensive (compared to standard Czochralski and float-zone wafers). This requirement has led to the development of a number of techniques for growing silicon ‘ribbons’, e.g. edge defined film-fed growth (EFG), silicon-on-ceramic (SOC), ribbon-to-ribbon (RTR) and dendritic web. Details of these and other growth techniques can be found in ref. Most of the growth methods produce silicon ribbons which contain relatively high densities of structural defects, such as grain boundaries, twin boundaries and dislocations. In addition, small amounts of chemical impurities are introduced into the ribbons during growth from sources such as shaping dies (EFG), substrates (SOC, RTR), heat shields, etc.

scholarly journals Application of CBD-Zinc Sulfide Film as an Antireflection Coating on Very Large Area Multicrystalline Silicon Solar Cell

2007 ◽  
Vol 2007 ◽  
pp. 1-5 ◽  
Author(s):  
U. Gangopadhyay ◽  
K. Kim ◽  
S. K. Dhungel ◽  
H. Saha ◽  
J. Yi
Keyword(s):  
Refractive Index ◽  
Solar Cells ◽  
Solar Cell ◽  
Silicon Solar Cell ◽  
Low Cost ◽  
Antireflection Coating ◽  
Film Deposition ◽  
Multicrystalline Silicon ◽  
Silicon Solar Cells ◽  
Large Area

The low-cost chemical bath deposition (CBD) technique is used to prepare CBD-ZnS films as antireflective (AR) coating for multicrystalline silicon solar cells. The uniformity of CBD-ZnS film on large area of textured multicrystalline silicon surface is the major challenge of CBD technique. In the present work, attempts have been made for the first time to improve the rate of deposition and uniformity of deposited film by controlling film stoichiometry and refractive index and also to minimize reflection loss by proper optimization of molar percentage of different chemical constituents and deposition conditions. Reasonable values of film deposition rate (12.13 Å′/min.), good film uniformity (standard deviation <1), and refractive index (2.35) along with a low percentage of average reflection (6-7%) on a textured mc-Si surface are achieved with proper optimization of ZnS bath. 12.24% efficiency on large area (125 mm × 125 mm) multicrystalline silicon solar cells with CBD-ZnS antireflection coating has been successfully fabricated. The viability of low-cost CBD-ZnS antireflection coating on large area multicrystalline silicon solar cell in the industrial production level is emphasized.

A novel low cost texturization method for large area commercial mono-crystalline silicon solar cells

2006 ◽  
Vol 90 (20) ◽  
pp. 3557-3567 ◽  
Author(s):  
U. Gangopadhyay ◽  
K.H. Kim ◽  
S.K. Dhungel ◽  
U. Manna ◽  
P.K. Basu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Crystalline Silicon ◽  
Low Cost ◽  
Silicon Solar Cells ◽  
Large Area ◽  
Crystalline Silicon Solar Cells

scholarly journals Broadband Unidirectional Forward Scattering with High Refractive Index Nanostructures: Application in Solar Cells

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4421
Author(s):  
Ángela Barreda ◽  
Pablo Albella ◽  
Fernando Moreno ◽  
Francisco González
Keyword(s):  
Refractive Index ◽  
Solar Cells ◽  
Forward Direction ◽  
High Refractive Index ◽  
Incident Radiation ◽  
Antireflection Coating ◽  
Electromagnetic Response ◽  
Silicon Substrates ◽  
Graded Index ◽  
Dielectric Substrates

High refractive index dielectric (HRID) nanoparticles are a clear alternative to metals in nanophotonic applications due to their low losses and directional scattering properties. It has been demonstrated that HRID dimers are more efficient scattering units than single nanoparticles in redirecting the incident radiation towards the forward direction. This effect was recently reported and is known as the “near zero-backward” scattering condition, attained when nanoparticles forming dimers strongly interact with each other. Here, we analyzed the electromagnetic response of HRID isolated nanoparticles and aggregates when deposited on monolayer and graded-index multilayer dielectric substrates. In particular, we studied the fraction of radiation that is scattered towards a substrate with known optical properties when the nanoparticles are located on its surface. We demonstrated that HRID dimers can increase the radiation emitted towards the substrate compared to that of isolated nanoparticles. However, this effect was only present for low values of the substrate refractive index. With the aim of observing the same effect for silicon substrates, we show that it is necessary to use a multilayer antireflection coating. We conclude that dimers of HRID nanoparticles on a graded-index multilayer substrate can increase the radiation scattered into a silicon photovoltaic wafer. The results in this work can be applied to the design of novel solar cells.

An optimum design of antireflection coating for spherical silicon solar cells

2006 ◽  
Vol 90 (1) ◽  
pp. 46-56 ◽  
Author(s):  
Takahiro Mizuta ◽  
Tomohiro Ikuta ◽  
Takashi Minemoto ◽  
Hideyuki Takakura ◽  
Yoshihiro Hamakawa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Optimum Design ◽  
Antireflection Coating ◽  
Silicon Solar Cells

scholarly journals Influence of the Front Surface Passivation Quality on Large Area n-Type Silicon Solar Cells with Al-Alloyed Rear Emitter

2011 ◽  
Vol 8 ◽  
pp. 487-492 ◽  
Author(s):  
F. Book ◽  
T. Wiedenmann ◽  
G. Schubert ◽  
H. Plagwitz ◽  
G. Hahn
Keyword(s):  
Solar Cells ◽  
Surface Passivation ◽  
Front Surface ◽  
Silicon Solar Cells ◽  
Large Area ◽  
Type Silicon
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