scholarly journals Effective Passivation of Large Area Black Silicon Solar Cells bySiO2/SiNx:H Stacks

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Zengchao Zhao ◽  
Bingye Zhang ◽  
Ping Li ◽  
Wan Guo ◽  
Aimin Liu
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Silicon Solar Cell ◽  
Internal Quantum Efficiency ◽  
State Density ◽  
Electrical Performance ◽  
Silicon Solar Cells ◽  
Black Silicon ◽  
Large Area

The performance of black silicon solar cells with various passivation films was characterized. Large area (156×156 mm2) black silicon was prepared by silver-nanoparticle-assisted etching on pyramidal silicon wafer. The conversion efficiency of black silicon solar cell without passivation is 13.8%. For the SiO2andSiNx:H passivation, the conversion efficiency of black silicon solar cells increases to 16.1% and 16.5%, respectively. Compared to the single film of surface passivation of black silicon solar cells, the SiO2/SiNx:H stacks exhibit the highest efficiency of 17.1%. The investigation of internal quantum efficiency (IQE) suggests that the SiO2/SiNx:H stacks films decrease the Auger recombination through reducing the surface doping concentration and surface state density of the Si/SiO2interface, andSiNx:H layer suppresses the Shockley-Read-Hall (SRH) recombination in the black silicon solar cell, which yields the best electrical performance of b-Si solar cells.

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.

Black Silicon for Higher Efficiency in Solar Cells

2015 ◽  
Vol 787 ◽  
pp. 92-96
Author(s):  
Digvijay Raghunathan
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Black Body ◽  
Black Body Radiation ◽  
Silicon Solar Cells ◽  
Black Silicon ◽  
Manufacturing Cost ◽  
Nano Fabrication ◽  
Reflective Coating ◽  
Low Efficiency

The very low efficiency of solar cells can be attributed to a plethora of reasons. The most important reason being, reflection of sunlight from the solar cell surface. Most of the sunlight incident on the solar cells gets reflected back due to the smooth surface of the silicon wafers. This paper presents a novel method to avoid this by using black silicon solar cells. Black silicon tends to make use of the concept of black body radiation to absorb all the rays incident on it and thereby reducing the reflectivity of the solar cell. The nano-fabrication technique involves usage of special wet-etch techniques to achieve nano-sized pores on the surface of silicon. In case of normal solar cells, usually layers of a suitable anti-reflective coating are given which tend to minimize the amount of reflection. This unfortunately increases the manufacturing cost. The unfavourable conditions of heat and dirt further tend to soil the layer of anti-reflective coating, reducing the gains of anti-reflective coating. Thus, black silicon solar cells provide better efficiency while simultaneously reducing the fabrication cost.

scholarly journals Large-Area Crystalline Silicon Solar Cell Using Novel Antireflective Nanoabsorber Texturing Surface by Multihollow Cathode Plasma System and Spin-On Doping

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Utpal Gangopadhyay ◽  
Sukhendu Jana ◽  
Sayan Das
Keyword(s):  
Solar Cell ◽  
Hollow Cathode ◽  
Silicon Solar Cell ◽  
Crystalline Silicon ◽  
Low Cost ◽  
Black Silicon ◽  
Textured Surface ◽  
Crystalline Silicon Solar Cell ◽  
Rf Power ◽  
Large Area

We present 11.7% efficient p-type crystalline silicon solar cells with a nanoscale textured surface and no dielectric antireflection coating. We propose nanocrystalline-like textured surface consisting of nanocrystalline columnar structures of diameters from 50 to 100 nm and depth of about 500 nm formed by reactive-ion etching (RIE) in multihollow cathode system. This novel nano textured surface acts as an antireflective absorbing surface of c-Si abbreviate as ARNAB (antireflective nanoabsorber). Light shining on the surface of RIE-etched silicon bounces back and forth between the spikes in such a way that most of it never comes back. Radio frequency (RF) hollow cathode discharge allows an improvement of plasma density by an order of magnitude in comparison to standard RF parallel-plate discharge. Desirable black silicon layer has been achieved when RF power of about 20 Watt per one hollow cathode glow is applied for our multihollow cathode system. The RF power frequency was 13.56 MHz. The antireflection property of ARNAB textured surface has been investigated and compared with wet-textured and PECVD coated silicon samples. Solar cell using low-cost spin-on coating technique has been demonstrated in this paper. We have successfully achieved 11.7% efficient large area (98 cm2) ARNAB textured crystalline silicon solar cell using low-cost spin-on coating (SOD) doping.

Water as infrared filter for silicon solar cell efficiency enhancement for Kerman province of Iran as a talent region for solar energy production

2017 ◽  
Vol 14 (5) ◽  
pp. 363-367 ◽  
Author(s):  
Mohammad Bagher Askari ◽  
Mohammad Reza Bahrampour ◽  
Vahid Mirzaei ◽  
Amir Khosro Beheshti Marnani ◽  
Mirhabibi Mohsen
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solar Energy ◽  
Energy Production ◽  
Silicon Solar Cell ◽  
Silicon Solar Cells ◽  
Efficiency Enhancement ◽  
Content Type ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Purpose The aim of this paper is to apply a watery infrared filter for silicon solar cell efficiency enhancement in Kerman province of Iran as a talent region for solar energy production. Design/methodology/approach With this research, the water is applied as a filter for silicon solar cells in different volumes and thicknesses. Findings The obtained results showed that using various amounts of water could be a suitable choice for increasing the efficiency of silicon solar cells. Originality/value Other wavelength regions just cause the increase in the entropy and decrease in the efficiency. With this research, the water is applied as a filter for silicon solar cell in different volumes and thickness. The obtained results showed that using different thicknesses of water could be suitable choice for increasing the efficiency of silicon solar cell.

scholarly journals SIMULATION HETEROJUNCTION SOLAR CELL A-SI:H(N)/A-SI:H(I)/C-SI(P)

2020 ◽  
Vol 2 (6(75)) ◽  
pp. 56-61
Author(s):  
S.A. Livinskaya S.A.
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Thin Layer ◽  
Layer Thickness ◽  
Silicon Solar Cell ◽  
Heterojunction Solar Cell ◽  
Silicon Solar Cells ◽  
Technological Research ◽  
A Value ◽  
Photovoltaic Characteristics

In this work, a silicon solar cell HIT (heterojunction with intrinsic thin-layer) a-Si:H(n)/a-Si:H(i)/c-Si(p) was simulated using AFORS-HET software. The influence of layer thickness and temperature of the solar cell under study on its photovoltaic characteristics is discussed. When optimizing the above characteristics, its effectiveness reaches a value of 19.1%. The results obtained are the foundation for further scientific and technological research on the development of highly efficient silicon solar cells.

scholarly journals Novel Photonic Crystal Based Polycrystalline CdTe/Silicon Solar Cells

2020 ◽  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Photonic Crystal ◽  
Conversion Efficiency ◽  
Current Density ◽  
Cell Structure ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Silicon Solar Cells

In this paper, a novel photonic crystal (PhC) polycrystalline CdTe/Silicon solar cells are theoretically explained that increase their short circuit current density and conversion efficiency. The proposed structure consist of a polycrystalline CdTe/Silicon solar cell that a photonic crystal is formed in the upper cell. The optical confinement is achieved by means of photonic crystal that can adjust the propagation and distribution of photons in solar cells. For validation of modeling, the electrical properties of the experimentally-fabricated based CdS/CdTe solar cell is modeled and compared that there is good agreement between the modeling results and experimental results from the litterature. The results of this study showed that the solar cell efficiency is increased by about 25% compared to the reference cell by using photonic crystal. The open circuit voltage, short circuit current density, fill factor and conversion efficiency of proposed solar cell structure are 1.01 V, 40.7 mA/cm2, 0.95 and 27% under global AM 1.5 conditions, respectively. Furthermore, the influence of carrier lifetime variation in the absorber layer of proposed solar cell on the electrical characteristics was theoretically considered and investigated.

scholarly journals Lifespan and Decomposition Effects of 1st and 3 rd Generation Silicon Solar Cell with respect to Environment and Health

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sadaf Faryal ◽  
Amjad Ali ◽  
Abdul Hameed Memon
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Health Effects ◽  
Atomic Number ◽  
Chemical Element ◽  
Silicon Solar Cell ◽  
Silicon Solar Cells ◽  
Solar Photovoltaic ◽  
The Past ◽  
Environment And Health

— Utilization of solar photovoltaic is increasing dayby day to reduce dependence on the power grid. Decompositionof 1st and 3rd generation silicon solar cells not only depends uponthe plastic and other materials but also the hazardous elementmainly used as their character on the bases of which they arecategorized as 1st , 2nd and 3rd contemporaries solar cells. Theseingredient are mostly carcinogenic and some of them having lifespan of more than 100 years. After abjection of solar cells, theyremain in the soil for many years and cause serious problem toland environment and also responsible for causing carcinogenicdisease in human and other living beings. This paper exploresdecomposition rates of the chemical element mainly used in 1stand 3rd generation solar cells throughout the past years, possibleenvironmental and health effects by the hazardous elements usedin them typically silicon (atomic number 14) and focusing onpossible suggested solutions or alternatives.

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.

scholarly journals Series resistance effect on the output parameters of buried emitter silicon solar cells

1999 ◽  
Vol 1 (2) ◽  
pp. 117-129
Author(s):  
Gamal M. Eldallal ◽  
Mohamed Y. Feteha ◽  
Mostafa E. Mousaa
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Theoretical Model ◽  
Equivalent Circuit ◽  
Silicon Solar Cell ◽  
Series Resistance ◽  
Silicon Solar Cells ◽  
Published Data

A realistic distributed equivalent circuit for the buried emitter silicon solar cell is presented taking into consideration the carriers paths through the planar and vertical junctions. In addition, a new theoretical model for the cell characteristics including the cell's mismatching, series resistance, different junctions (planar and vertical) and junctions geometry is considered in this work. The results are compared with the published data.

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