scholarly journals Block Textured a-Si:H Solar Cell

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Seung Jae Moon ◽  
Chang Min Keum ◽  
Ju-Yeon Kim ◽  
Jin Kuk Kim ◽  
Byung Seong Bae
Keyword(s):  
Solar Cell ◽  
Glass Substrate ◽  
High Efficiency ◽  
Light Trapping ◽  
Steep Slope ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Block Height ◽  
Etching Profile ◽  
Glass Etching

A series of etching experiments on light trapping structure have been carried out by glass etching. The block structure provides long light traveling path and a constant distance between the cathode and anode electrodes regardless of the block height, which results in higher efficiency of the block textured solar cell. In terms of etching profile of the glass substrate, the addition of NH4F resulted in the smooth and clean etching profile, and the steep slope of the block was obtained by optimizing the composition of etching solution. For a higher HF concentration, a more graded slope was obtained and the addition of HNO3and NH4F provided steep slope and clean etching profile. The effects of the block textured glass were verified by a comparison of the solar cell efficiency. For the textured solar cell, the surface was much rougher than that of the plain glass, which also contributes to the improvement of the efficiency. We accomplished block shaped light trapping structure for the first time by wet etching of the glass substrate, which enables the high efficiency thin film solar cell with the aid of the good step coverage deposition.

Improvement of solar cell efficiency by applying Si3N4 nanopattern on glass substrate

2014 ◽  
Vol 14 (9) ◽  
pp. 1240-1244 ◽  
Author(s):  
Yang Doo Kim ◽  
Ju-Hyeon Shin ◽  
Kyeong Suk Oh ◽  
Jeong Chul Lee ◽  
Heon Lee
Keyword(s):  
Solar Cell ◽  
Glass Substrate ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

scholarly journals Back Cover: Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere arrays (Phys. Status Solidi A 2/2013)

2013 ◽  
Vol 210 (2) ◽  
Author(s):  
Jonathan Grandidier ◽  
Raymond A. Weitekamp ◽  
Michael G. Deceglie ◽  
Dennis M. Callahan ◽  
Corsin Battaglia ◽  
...  
Keyword(s):  
Solar Cell ◽  
Light Trapping ◽  
Efficiency Enhancement ◽  
Solar Cell Efficiency ◽  
Back Cover ◽  
Cell Efficiency

Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere arrays

2012 ◽  
Vol 210 (2) ◽  
pp. 255-260 ◽  
Author(s):  
Jonathan Grandidier ◽  
Raymond A. Weitekamp ◽  
Michael G. Deceglie ◽  
Dennis M. Callahan ◽  
Corsin Battaglia ◽  
...  
Keyword(s):  
Solar Cell ◽  
Light Trapping ◽  
Efficiency Enhancement ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

scholarly journals The Effect of Eriochrome Black T Concentrations on the Efficiency of Dye-sensitized Solar Cells

2018 ◽  
pp. 1-13
Author(s):  
Moutasim Ali Ahmed ◽  
M. Dirar ◽  
Mohamed A. Siddig ◽  
S. M. H. Abdalsakhi
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Glass Substrate ◽  
Science And Technology ◽  
Medical Science ◽  
Dye Sensitized Solar Cells ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Eriochrome Black T ◽  
Ito Glass

Aims: To investigate The effect of concentration on organic solar cell efficiency. Study Design:  Polymer and natural dye Eriochrome black T were deposited on ITO glass substrate, and then the resulted cells were tested for  characteristics. Place and Duration of Study: International University of Africa Faculty of Pure and applied science-Department of Physics collaboration with University Medical Science and Technology- Alawia Centre and  AlNilain University – Faculty of Science and Technology – Department of Physics, between March 2016 and May 2017. Methodology: we have dye of different colour, we select three colours the dye, and then UV-visible spectrometer used for absorption spectra. After that, the relation between absorption and wavelength, absorption coefficient, and energy band gap were found graphically. Finally, cells were designed on ITO glass substrate by using spin coating deposition. Characteristics measured.   Results: The relation between the Eriochrome black T concentration of dye for three samples are 6.67, 6.03, and 5.43 g/L, and the corresponding efficiencies for dark blue are 0.091, 0.090 and 0.229 respectively. The efficiencies of yellow Eriochrome Black T are 0.228, 0.193 and 0.181. And the efficiencies of red Eriochrome Black T are 0.246, 0.235 and 0.193. The decreases of efficiency due to the decreases of Eriochrome Black T concentration is related to the direct relation between Eriochrome Black T concentration and solar cell. Conclusion: The efficiency of dye-sensitised solar cells can be increased by increasing the Eriochrome Black T dye concentrations at least within the examined range. The Eriochrome Black T dye type also affect efficiency. This includes the transparency of the Eriochrome Black T dye beside the value of the Fermi energy. In addition to the relative positions of highest occupied molecular orbitals (HOMO) and lowest unoccupied molecular orbits (LUMO) to nearby layers.  

Toward a theoretical limit of solar cell efficiency with light trapping and sub-structure

Solar Energy ◽  
1995 ◽  
Vol 54 (6) ◽  
pp. 381-385 ◽  
Author(s):  
F. Pelanchon ◽  
P. Mialhe
Keyword(s):  
Solar Cell ◽  
Light Trapping ◽  
Theoretical Limit ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Real Time Optics of Amorphous Silicon Solar Cellfabrication on Textured Tin-Oxide-Coated Glass

1999 ◽  
Vol 557 ◽  
Author(s):  
P. I. Rovira ◽  
A. S. Ferlauto ◽  
Ilsin An ◽  
H. Fujiwara ◽  
Joohyun Koh ◽  
...  
Keyword(s):  
Solar Cell ◽  
Amorphous Silicon ◽  
Real Time ◽  
Tin Oxide ◽  
Light Trapping ◽  
Degree Of Polarization ◽  
Stokes Vector ◽  
Solar Cell Efficiency ◽  
Coated Glass ◽  
Cell Efficiency

AbstractA rotating-compensator multichannel ellipsometer has been used to measure the four spectra (1.4-4.0 eV) that describe the Stokes vector of the light beam reflected from the surface of an amorphous silicon (a-Si:H) p-i-n solar cell during fabrication on textured tin-oxide (SnO2) coated glass. The Stokes vector elements include the irradiance in the reflected beam (or the reflectance) and the parameters {(Q, χ), p} of the reflected beam, where Q and χ are the tilt and ellipticity angles of the polarization ellipse and p is the degree of polarization. The value of p deviates from unity in part due to the non-uniform nature of the textured SnO2 substrate film. An analysis of Q and χ that neglects the effects of the texture can provide the time evolution of the thicknesses, microscopic structure, and the optical properties of the component layers of the a-Si:H solar cell. Deviations of the measured reflectance spectra from those predicted on the basis of the (Q, χ) analysis provide the thickness dependence of the scattering and the evolution of the macroscopic structure of the solar cell. The measurement and analysis approach is important because of its potential application for real time monitoring of solar cell production. The analysis results also provide realistic inputs for optical modeling of the effects of texture in light trapping for solar cell efficiency enhancement.

scholarly journals Influence of Front and Back Contacts on Photovoltaic Performances of p-n Homojunction Si Solar Cell: Considering an Electron-Blocking Layer

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Md. Feroz Ali ◽  
Md. Faruk Hossain
Keyword(s):  
Solar Cell ◽  
Work Function ◽  
High Efficiency ◽  
Blocking Layer ◽  
Back Contact ◽  
Electron Blocking Layer ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Proposed Model

In this simultion work, the effect of front and back contacts of p-n homojunction Si solar cell with an electron-blocking layer (EBL) has been studied with the help of a strong solar cell simulator named AMPS-1D (analysis of microelectronic and photonic structures one dimensional). Without the effect of these contact parameters, low solar cell efficiency has been observed. Fluorine-doped tin oxide (FTO) with high work function (5.45 eV) has been used as the front contact to the proposed solar cell. Zinc (Zn) metal which has a work function of 4.3 eV has been used as the back contact of the proposed model. With FTO as the front contact and Zn as the back contact, the optimum efficiency of 29.275% (Voc = 1.363 V, Jsc = 23.747 mA/cm2, FF = 0.905) has been observed. This type of simple Si-based p-n homojunction solar cell with EBL of high efficiency has been proposed in this paper.

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