Stress and doping uniformity of laser crystallized amorphous silicon in thin film silicon solar cells

2010 ◽  
Vol 107 (5) ◽  
pp. 054312 ◽  
Author(s):  
R. M. B. Agaiby ◽  
M. Becker ◽  
S. B. Thapa ◽  
U. Urmoneit ◽  
A. Berger ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Silicon Solar Cells ◽  
Thin Film Silicon

Periodic Structures for Improved Light Management in Thin-film Silicon Solar Cells

2008 ◽  
Vol 1101 ◽  
Author(s):  
Janez Krc ◽  
Andrej Campa ◽  
Stefan L. Luxembourg ◽  
Miro Zeman ◽  
Marko Topic
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Photonic Crystal ◽  
Amorphous Silicon ◽  
Periodic Structures ◽  
Light Trapping ◽  
Silicon Solar Cells ◽  
Thin Film Silicon ◽  
Light Management

AbstractAdvanced light management in thin-film solar cells is important in order to improve the photo-current and, thus, to raise up the conversion efficiencies of the solar cells. In this article two types of periodic structures ¡V one-dimensional diffraction gratings and photonic crystals,are analyzed in the direction of showing their potential for improved light trapping in thin-film silicon solar cells. The anti-reflective effects and enhanced scattering at the gratings with the triangular and rectangular features are studied by means of two-dimensional optical simulations. Simulations of the complete microcrystalline solar cell incorporating the gratings at all interfaces are presented. Critical optical issues to be overcome for achieving the performances of the cells with the optimized randomly textured interfaces are pointed out. Reflectance measurements for the designed 12 layer photonic crystal stack consisting of amorphous silicon nitride and amorphous silicon layers are presented and compared with the simulations. High reflectance (up to 99 %) of the stack is measured for a broad wavelength spectrum. By means of optical simulations the potential for using a simple photonic crystal structure as a back reflector in an amorphous silicon solar cell is demonstrated.

Light trapping in amorphous silicon solar cells on plastic substrates

2003 ◽  
Vol 769 ◽  
Author(s):  
Vanessa Terrazzoni-Daudrix ◽  
Joelle Guillet ◽  
Xavier Niquille ◽  
Arvind Shah ◽  
R. Morf ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Theoretical Calculations ◽  
Light Trapping ◽  
Production Costs ◽  
Silicon Solar Cells ◽  
Plastic Substrates ◽  
Trapping Effect ◽  
Thin Film Silicon

AbstractIn order to simultaneously decrease the production costs of thin film silicon solar cells and obtain higher performances, the authors have studied the possibility to increase the light trapping effect within thin film silicon solar cells deposited on flexible plastic substrates. In this context, different nano-structure shapes useable for the back contacts of amorphous silicon solar cells on plastic substrates have been investigated: random textures and gratings.The optimisation of such back reflectors is so far empirical. Gratings constitute a well-known optical technique and their light trapping effect can be optimised by simulation.A first conclusion is that neither the traditional “Haze factor” determined in air for a wavelength of 650nm nor the “rms roughness” of the surfaces are sufficient as criteria to optimise the back contact roughness for light trapping in cells. The shape of grains is a further essential criterion. The authors have so far obtained a relative current enhancement of 16% for solar cells deposited on randomly textured polyethylene terephthalate (PET) as compared to a corresponding conventional solar cell co-deposited on a flat mirror (Ag) on glass. Solar cells on PET with 6.3% stabilized efficiency have until now been obtained. Theoretical calculations indicate that gratings can enhance the current of a-Si solar cells by up to 30 percent.

Optimization of amorphous silicon double junction solar cells for an efficient photoelectrochemical water splitting device based on a bismuth vanadate photoanode

2014 ◽  
Vol 16 (9) ◽  
pp. 4220-4229 ◽  
Author(s):  
Lihao Han ◽  
Fatwa F. Abdi ◽  
Paula Perez Rodriguez ◽  
Bernard Dam ◽  
Roel van de Krol ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Water Splitting ◽  
Bismuth Vanadate ◽  
Photoelectrochemical Water Splitting ◽  
Silicon Solar Cells ◽  
Thin Film Silicon ◽  
Double Junction

An effective photoelectrochemical water splitting device based on a bismuth vanadate photoanode and thin film silicon solar cells has been optimized.

Optical and electrical modeling of thin-film silicon solar cells

2008 ◽  
Vol 23 (4) ◽  
pp. 889-898 ◽  
Author(s):  
M. Zeman ◽  
J. Krc
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Triple Junction ◽  
Silicon Germanium ◽  
Buffer Layers ◽  
Silicon Solar Cells ◽  
Antireflective Coatings ◽  
Thin Film Silicon

This article focuses on the modeling and simulation of thin-film silicon solar cells to obtain increased efficiency. Computer simulations were used to study the performance limits of tandem and triple-junction, silicon-based solar cells. For the analysis, the optical simulator SunShine, which was developed at Ljubljana University, and the optoelectrical simulator ASA, which was developed at Delft University of Technology, were used. After calibration with realistic optical and electrical parameters, we used these simulators to study the scattering properties required, the absorption in nonactive layers, antireflective coatings, and the crucial role of the wavelength-selective intermediate reflector on the performance of the solar cells. Careful current matching was carried out to explore whether a high photocurrent [i.e., more than 15 mA/cm2 for a tandem hydrogenated amorphous silicon (a-Si:H)/hydrogenated microcrystalline silicon (μc-Si:H) solar cell and 11 mA/cm2 for a triple-junction a-Si:H/amorphous silicon germanium (a-SiGe:H)/μc-Si:H solar cell] could be obtained. In simulations, the extraction of the charge carriers, the open-circuit voltage, and the fill factor of these solar cells were improved by optimizing the electrical properties of the layers and the interfaces: a p-doped, a-SiC layer with a larger band gap (EG > 2 eV) and buffer layers at p/i interfaces were used. Simulations demonstrated that a-Si:H/μc-Si:H solar cells could be obtained with a conversion efficiency of 15% or higher, and triple-junction a-Si:H/a-SiGe:H/μc-Si:H solar cells with an efficiency of 17%.

Development of n-μc-SiOx:H as cost effective back reflector and its application to thin film amorphous silicon solar cells

Solar Energy ◽  
2013 ◽  
Vol 97 ◽  
pp. 591-595 ◽  
Author(s):  
C. Banerjee ◽  
T. Srikanth ◽  
U. Basavaraju ◽  
R.M. Tomy ◽  
M.G. Sreenivasan ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Cost Effective ◽  
Silicon Solar Cells ◽  
Back Reflector

Optimization of the texturization of ZnO:Al surface using HCl + HNO3 for application in thin film silicon solar cells

2017 ◽  
Vol 29 (4) ◽  
pp. 3210-3218 ◽  
Author(s):  
Sukanta Bose ◽  
Arokiyadoss Rayarfrancis ◽  
P. Balaji Bhargav ◽  
Gufran Ahmad ◽  
Sumita Mukhopadhyay ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Silicon Solar Cells ◽  
Thin Film Silicon

Enhanced light trapping in thin-film silicon solar cells with concave quadratic bottom gratings

2018 ◽  
Vol 57 (19) ◽  
pp. 5348 ◽  
Author(s):  
Ke Chen ◽  
Rui Wu ◽  
Hongmei Zheng ◽  
Yuanyuan Wang ◽  
Xiaopeng Yu
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Silicon Solar Cells ◽  
Thin Film Silicon
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