scholarly journals SiO2Antireflection Coatings Fabricated by Electron-Beam Evaporation for Black Monocrystalline Silicon Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Minghua Li ◽  
Hui Shen ◽  
Lin Zhuang ◽  
Daming Chen ◽  
Xinghua Liang
Keyword(s):  
Electron Beam ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Single Layer ◽  
Bottom Layer ◽  
Energy Conversion Efficiency ◽  
Electron Beam Evaporation ◽  
Silicon Solar Cells ◽  
Antireflection Coatings ◽  
Efficiency Increase

In this work we prepared double-layer antireflection coatings (DARC) by using the SiO2/SiNx:H heterostructure design. SiO2thin films were deposited by electron-beam evaporation on the conventional solar cell with SiNx:H single-layer antireflection coatings (SARC), while to avoid the coverage of SiO2on the front side busbars, a steel mask was utilized as the shelter. The thickness of the SiNx:H as bottom layer was fixed at 80 nm, and the varied thicknesses of the SiO2as top layer were 105 nm and 122 nm. The results show that the SiO2/SiNx:H DARC have a much lower reflectance and higher external quantum efficiency (EQE) in short wavelengths compared with the SiNx:H SARC. A higher energy conversion efficiency of 17.80% was obtained for solar cells with SiO2(105 nm)/SiNx:H (80 nm) DARC, an absolute conversion efficiency increase of 0.32% compared with the conventional single SiNx:H-coated cells.

Cost Impacts of Anti-Reflection Coatings on Silicon Solar Cells

1996 ◽  
Vol 426 ◽  
Author(s):  
David C. Wong ◽  
Art Waugh
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Photovoltaic Effect ◽  
Golden Rule ◽  
Energy Conversion Efficiency ◽  
Silicon Solar Cells ◽  
Production Volume ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
The Cost

AbstractDespite the early discovery of the Photovoltaic effect by Bechquerel almost 107 years ago, its commercial value had never been seriously considered because of its high cost in production and low in energy conversion efficiency. A familiar predicament has restrained demand for photovoltaic application: People won't use them until they are affordable, but they won't get affordable until there is a mass market for them. As has happened in other expensive markets, businesses are desperate to crack the conundrum. Since the oil shortage in the 70s, crystalline solar cell efficiency has increased from 8% to over 13% to date on 100 mm2 commercial silicon cells by refining the process with advanced device technologies. Together with increased production volume, the cost per watt has been reduced from over $ 8 in the 80's to as low as $3 to day. However, the cost is still considered too high to compete with fossil fuel energy. Further cost reduction is necessary by improving the cell and module conversion efficiency. The increase in cell efficiency and the process to achieve the goal, however, have to follow the golden rule of economics that the operational cost is a fraction of the profit in return. It is shown numerically in this paper that Anti Reflection (AR) coating on silicon solar cells by Atmospheric Pressure Chemical Vapor Deposition (APCVD) technique for large volume production could have over 650% profit return.

scholarly journals Optimization of Antireflection Coating Design Using PC1D Simulation for c − Si Solar Cell Application

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3132
Author(s):  
Maruthamuthu Subramanian ◽  
Omar M. Aldossary ◽  
Manawwer Alam ◽  
Mohd Ubaidullah ◽  
Sreedevi Gedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Single Layer ◽  
Antireflection Coating ◽  
Silicon Solar Cells ◽  
Refractive Indices ◽  
Solar Cell Application ◽  
The Impact

Minimizing the photon losses by depositing an anti-reflection layer can increase the conversion efficiency of the solar cells. In this paper, the impact of anti-reflection coating (ARC) for enhancing the efficiency of silicon solar cells is presented. Initially, the refractive indices and reflectance of various ARC materials were computed numerically using the OPAL2 calculator. After which, the reflectance of SiO2,TiO2,SiNx with different refractive indices (n) were used for analyzing the performance of a silicon solar cells coated with these materials using PC1D simulator. SiNx and TiO2 as single-layer anti-reflection coating (SLARC) yielded a short circuit current density (Jsc) of 38.4 mA/cm2 and 38.09mA/cm2 respectively. Highest efficiency of 20.7% was obtained for the SiNx ARC layer with n=2.15. With Double-layer anti-reflection coating (DLARC), the Jsc improved by ∼0.5 mA/cm2 for SiO2/SiNx layer and hence the efficiency by 0.3%. Blue loss reduces significantly for the DLARC compared with SLARC and hence increase in Jsc by 1 mA/cm2 is observed. The Jsc values obtained is in good agreement with the reflectance values of the ARC layers. The solar cell with DLARC obtained from the study showed that improved conversion efficiency of 21.1% is obtained. Finally, it is essential to understand that the key parameters identified in this simulation study concerning the DLARC fabrication will make experimental validation faster and cheaper.

Investigation on AR Techniques of Silicon Solar Cells

2014 ◽  
Vol 521 ◽  
pp. 52-55
Author(s):  
Chun Rong Xue ◽  
Yu Qin Gu ◽  
Ming Liang Deng
Keyword(s):  
Solar Cells ◽  
Reflection Loss ◽  
Short Circuit ◽  
Surface Texturing ◽  
Single Layer ◽  
Short Circuit Current ◽  
Silicon Solar Cells ◽  
Textured Surface ◽  
Antireflection Coatings ◽  
Si Solar Cells

This work presents study of both the antireflection coatings on silicon solar cells and surface texture of silicon solar cell, with the aim to prepare high quality Si solar cells. Surface texturing, either in combination with an anti-reflection coating or by itself, can be used to minimize reflection, but the large reflection loss can be reduced significantly via a suitable anti-reflecting coatings. Significant improvement of the short circuit current after anti-reflecting coatings was observed. It is found that the currentvoltage characteristic with a double-layer anti-reflecting coatings is better than that with a single-layer anti-reflecting coatings. Depositing a multilayer on the textured surface reduces the large reflection loss significantly. The short circuit current of silicon solar cells has significant improvement after depositing anti-reflecting coatings on textured surface silicon, and it increases the efficiency of the Si solar cells.

scholarly journals Temperature and color management of silicon solar cells for building integrated photovoltaic

2018 ◽  
Vol 9 ◽  
pp. 1 ◽  
Author(s):  
Mohamed Amara ◽  
Fabien Mandorlo ◽  
Romain Couderc ◽  
Félix Gerenton ◽  
Mustapha Lemiti
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Color Space ◽  
Single Layer ◽  
Silicon Solar Cells ◽  
Color Management ◽  
Building Integrated Photovoltaic ◽  
Maximum Conversion Efficiency ◽  
Perceived Color ◽  
Antireflective Properties

Color management of integrated photovoltaics must meet two criteria of performance: provide maximum conversion efficiency and allow getting the chosen colors with an appropriate brightness, more particularly when using side by side solar cells of different colors. As the cooling conditions are not necessarily optimal, we need to take into account the influence of the heat transfer and temperature. In this article, we focus on the color space and brightness achieved by varying the antireflective properties of flat silicon solar cells. We demonstrate that taking into account the thermal effects allows freely choosing the color and adapting the brightness with a small impact on the conversion efficiency, except for dark blue solar cells. This behavior is especially true when heat exchange by convection is low. Our optical simulations show that the perceived color, for single layer ARC, is not varying with the position of the observer, whatever the chosen color. The use of a double layer ARC adds flexibility to tune the wanted color since the color space is greatly increased in the green and yellow directions. Last, choosing the accurate material allows both bright colors and high conversion efficiency at the same time.

Studies on the Influence of In and Zn Doping on the CdSe Based Photo Electro Chemical (PEC) Solar Cells Using Electron Beam Evaporation Technique

2015 ◽  
Vol 832 ◽  
pp. 84-93
Author(s):  
S. Rani ◽  
J. Shanthi ◽  
S. Thanka Rajan ◽  
A. Ayeshamariam ◽  
M. Jayachandran
Keyword(s):  
Electron Beam ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Optical Band Gap ◽  
Electron Beam Evaporation ◽  
Zn Doping ◽  
Electron Beam Evaporation Technique ◽  
Pec Solar Cells ◽  
Crystalline Films ◽  
Evaporation Technique

CdSe thin films doped with 10% of Indium and 10 % Zinc were prepared by electron beam evaporation technique and the films were annealed at 200 oC for 30 min. Well crystalline films were deposited and the crystallite variation was studied for doping effect and it was found to be about 48 and 52 nm respectively. Optical band gap values are found to be modified by doping as well as annealing. PEC solar cells were fabricated using CdSe:In and CdSe:Zn films which showed 1.54% and 1.88% conversion efficiency respectively. Annealed films showed considerable influence in the optoelctronic properties and its improvement in conversion efficiency to about 2.75% and 2.87% respectively. In order to increase the photo output the films were annealed at 200o C at temperature. The photo output was Voc = 0.476 V, Jsc = 9.8 mA cm-2, ff = 0.44, η = 2.76 % at 80 mW cm-2. Photoetching increased the output parameters.

Investigation on Antireflection Coatings for Silicon Solar Cells

2014 ◽  
Vol 521 ◽  
pp. 33-36 ◽  
Author(s):  
Chun Rong Xue ◽  
Yu Qin Gu ◽  
Ming Liang Deng
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Optical Loss ◽  
Single Layer ◽  
Short Circuit Current ◽  
Phase Changes ◽  
Silicon Solar Cells ◽  
Antireflection Coatings ◽  
Si Solar Cells ◽  
Average Reflectance

Thin-film anti-reflecting coatings can greatly reduce the optical loss by making use of phase changes, and the reflectivity depends on the refractive index of materials. TiO2ZnS and Si3N4coatings are suitable for using as single layer anti-reflecting coating on bare silicon surface, while the MgF2/ZnS and SiO2/TiO2double-layer anti-reflecting coating result in a minimum reflectance lower than 0.5% over broad spectral regions, with an average reflectance of approximately 2.25% between 400 and 1100 nm on the non-textured Si substrate. The short circuit current of silicon solar cells has significant improvement after depositing anti-reflecting coatings, and it increases the efficiency of the Si solar cells.

First-principles study on the electronic and optical properties of the orthorhombic CsPbBr3 and CsPbI3 with Cmcm space group

2021 ◽  
Author(s):  
Xianhao Zhao ◽  
Tianyu Tang ◽  
Quan Xie ◽  
like gao ◽  
Limin Lu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
First Principles ◽  
Energy Conversion Efficiency ◽  
Space Group ◽  
Absorbing Materials ◽  
Halide Perovskites ◽  
Lead Halide

The cesium lead halide perovskites are regarded as effective candidates for light-absorbing materials in solar cells, which have shown excellent performances in experiments such as promising energy conversion efficiency. In...

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