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.

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.

Study of the Influence of Structural Defects on Properties of Silicon Solar Cells

2013 ◽  
Vol 592-593 ◽  
pp. 449-452
Author(s):  
Jiří Šicner ◽  
Pavel Škarvada ◽  
Robert Macků ◽  
Pavel Koktavý
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Electron Microscope ◽  
Solar Cell ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Ccd Camera ◽  
Structural Defects ◽  
Silicon Solar Cells

Solar cells of common sizes contains many of these defects and it is not easy to determine the influence of particular defects on the characteristics of the whole solar cell. Therefore, in our research we use samples of size of square centimeter at which we can disentangle the influence of the defect. We localize the defect by using a CCD camera, we measure the electrical, thermal and optical properties of the sample and then study it by means an electron microscope, we find the damaged structure and put it to focused ion beam. We expect the change in electrical, thermal and optical properties of the sample.

The Development and Application of High-Efficiency Low-Cost Silicon Thin Film Solar Cell

2015 ◽  
Vol 1771 ◽  
pp. 97-107
Author(s):  
Xueshi Tan ◽  
Bingxue Mao ◽  
Feng Zhang ◽  
Jingjing Yang
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
System Integration ◽  
High Efficiency ◽  
Low Cost ◽  
Silicon Solar Cells ◽  
Silicon Thin Film ◽  
Photovoltaic Conversion Efficiency ◽  
Degradation Effect

ABSTRACTFor the industrial application of silicon thin film solar cells, the current focus is on how to realize high-efficiency low-cost production process and minimize light-induced degradation effect, thus effectively reducing the balance-of-system (BOS) costs of system integration. In this paper, a brief introduction based on our development and application in this area is presented, highlighting in the achievement of some layers in a-Si:H/μc-Si:H tandem solar cell by optimizing the property of single layers, such as amorphous intrinsic layer, intermediate reflective layer and microcrystalline intrinsic layer. After transferring the process achievement to the industrial production line, we obtained the low-cost thin-film silicon solar cells with high photovoltaic conversion efficiency of 10.2%.

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.

Low-cost and flexible ultra-thin silicon solar cell implemented with energy-down-shift via Cd0.5Zn0.5S/ZnS core/shell quantum dots

2015 ◽  
Vol 3 (2) ◽  
pp. 481-487 ◽  
Author(s):  
Seung-Wook Baek ◽  
Jae-Hyoung Shim ◽  
Yun-Hyuk Ko ◽  
Jin-Seong Park ◽  
Gon-Sub Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Silicon Solar Cell ◽  
Low Cost ◽  
Power Conversion ◽  
Silicon Solar Cells ◽  
Core Shell ◽  
Thin Silicon

Flexible ultra-thin silicon solar cells with power-conversion-efficiency of 12.4 % implemented with an energy-down-shift layer show stable, flexible and twistable characteristics.

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 Low-cost substrates for polycrystalline-silicon solar cells by electrodeposition processes. Final report

1982 ◽  
Author(s):  
W. Gass ◽  
R. Witkowski ◽  
I. Kanter ◽  
A. Berringer ◽  
T. Temofonte, II
Keyword(s):  
Solar Cells ◽  
Polycrystalline Silicon ◽  
Low Cost ◽  
Silicon Solar Cells ◽  
Final Report
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