scholarly journals Optimization of surface reflectance for silicon solar cells

2018 ◽  
Vol 69 ◽  
pp. 01008 ◽  
Author(s):  
Gagik Ayvazyan ◽  
Razmik Barseghyan ◽  
Sergey Minasyan
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Surface Recombination ◽  
Silicon Solar Cells ◽  
Black Silicon ◽  
Gas Mixture ◽  
Surface Reflectance ◽  
High Efficiency Solar Cells ◽  
Average Reflectance ◽  
Si Wafer

A study on the formation of black silicon (b-Si) antireflection layers on crystalline Si wafers using SF6/O2gas mixture in a reactive ion etching method is presented. The process is low-temperature, fast and does not depend on the crystallographic orientation of the Si wafer. The b-Si layers have demonstrated average reflectance values of 4% and 5% for monoand polycrystalline Si wafers respectively, feature that is suitable for the fabrication of high efficiency solar cells. Passivation of b-Si antireflection layers by suitable different thin films can significantly reduce needle-like surface recombination losses.

High Efficiency Thin Film Silicon Solar Cells

2013 ◽  
Vol 750-752 ◽  
pp. 970-973
Author(s):  
Chun Rong Xue ◽  
Xia Yun Sun
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Amorphous Silicon ◽  
Triple Junction ◽  
High Efficiency ◽  
Silicon Solar Cells ◽  
Cell Efficiency ◽  
High Efficiency Solar Cells ◽  
Alternative Material ◽  
Staebler Wronski Effect

High-efficiency solar cells based on amorphous silicon technology are designed. Multi-junction amorphous silicon solar cells are discussed, how these are made and how their performance can be understood and optimized. Although significant amount of work has been carried out in the last twenty-five years, the Staebler-Wronski effect has limited the development of a-Si:H solar cells. As an alternative material, nc-Si:H has attracted remarkable attention. Taking advantage of a lower degradation in nc-Si:H than a-Si:H and a-SiGe:H alloys, the light induced degradation in triple junction structures has been minimized by designing a bottom-cell-limited current mismatching, and obtained a stable active-area cell efficiency. All this has been investigated in this paper.

Electric Field Effect Surface Passivation for Silicon Solar Cells

2013 ◽  
Vol 205-206 ◽  
pp. 346-351 ◽  
Author(s):  
Ruy S. Bonilla ◽  
Christian Reichel ◽  
Martin Hermle ◽  
Peter R. Wilshaw
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Field Effect ◽  
High Efficiency ◽  
Surface Recombination ◽  
Front Surface ◽  
Double Layers ◽  
Surface Recombination Velocity ◽  
Silicon Solar Cells ◽  
Electric Field Effect

Effective reduction of front surface carrier recombination is essential for high efficiency silicon solar cells. Dielectric films are normally used to achieve such reduction. They provide a) an efficient passivation of surface recombination and b) an effective anti-reflection layer. The conditions that produce an effective anti-reflection coating are not necessarily the same for efficient passivation, hence both functions are difficult to achieve simultaneously and expensive processing steps are normally required. This can be overcome by enhancing the passivation properties of an anti-reflective film using the electric field effect. Here, we demonstrate that thermally grown silicon dioxide is an efficient passivation layer when chemically treated and electrically charged, and it is stable over a period of ten months. Double layers of SiO2 and SiN also provided stable and efficient passivation for a period of a year when the sample is submitted to a post-charge anneal. Surface recombination velocity upper limits of 9 cm/s and 19 cm/s were inferred for single and double layers respectively on n-type, 5 Ωcm, Cz-Si.

scholarly journals Surface Plasmon Enhanced Light Trapping in Metal/Silicon Nanobowl Arrays for Thin Film Photovoltaics

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Ruinan Sun ◽  
Haoxin Fu ◽  
Jiang Wang ◽  
Yachun Wang ◽  
Xingchen Du ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Efficiency ◽  
Light Trapping ◽  
Short Circuit ◽  
Silicon Solar Cells ◽  
Periodic Arrays ◽  
High Efficiency Solar Cells ◽  
Wide Range ◽  
Significant Cost Reduction

Enhancing the light absorption in thin film silicon solar cells with nanophotonic and plasmonic structures is important for the realization of high efficiency solar cells with significant cost reduction. In this work, we investigate periodic arrays of conformal metal/silicon nanobowl arrays (MSNBs) for light trapping applications in silicon solar cells. They exhibited excellent light-harvesting ability across a wide range of wavelengths up to infrared regimes. The optimized structure (MSNBsH) covered by SiO2 passivation layer and hemisphere Ag back reflection layer has a maximal short-circuit density (Jsc) 25.5 mA/cm2, which is about 88.8% higher than flat structure counterpart, and the light-conversion efficiency (η) is increased two times from 6.3% to 12.6%. The double-side textures offer a promising approach to high efficiency ultrathin silicon solar cells.

High-efficiency multi-crystalline black silicon solar cells achieved by additive assisted Ag-MACE

Solar Energy ◽  
2020 ◽  
Vol 195 ◽  
pp. 176-184 ◽  
Author(s):  
Xinpu Li ◽  
Zhibo Gao ◽  
Danni Zhang ◽  
Ke Tao ◽  
Rui Jia ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Silicon Solar Cells ◽  
Black Silicon

Design for Amorphous Silicon Solar Cells

2013 ◽  
Vol 750-752 ◽  
pp. 961-964
Author(s):  
Chun Rong Xue ◽  
Xia Yun Sun
Keyword(s):  
Solar Cells ◽  
Amorphous Silicon ◽  
High Efficiency ◽  
Scientific Literature ◽  
Plasma Deposition ◽  
Silicon Solar Cells ◽  
Silicon Technology ◽  
High Efficiency Solar Cells ◽  
Fundamental Physical

This document explains and demonstrates how to design efficient amorphous silicon solar cells. Some of the fundamental physical concepts required to interpret the scientific literature about amorphous silicon are introduced. The principal methods such as plasma deposition that are used to make amorphous siliconbased solar cells are investigated. On the basis, high-efficiency solar cells based on amorphous silicon technology are designed. Multi-junction amorphous silicon solar cells are discussed, how these are made and how their performance can be understood and optimized. To conclude this document, some of the directions that are important for future progress in the field are presented.

Effective optimization of emitters and surface passivation for nanostructured silicon solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104073-104081 ◽  
Author(s):  
Ping Li ◽  
Yi Wei ◽  
Xin Tan ◽  
Xiaoxuan Li ◽  
Yuxuan Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Surface Passivation ◽  
Silicon Solar Cells ◽  
Black Silicon ◽  
Nanostructured Silicon

High efficiency black silicon solar cells achieved by optimization of emitter and surface passivation.

scholarly journals Challenges in Processing Diamond Wire Cut and Black Silicon Wafers in Large-Scale Manufacturing of High Efficiency Solar Cells

2020 ◽  
Vol 08 (02) ◽  
pp. 65-77
Author(s):  
Kishan Shetty ◽  
Yudhbir Kaushal ◽  
Nagesh Chikkan ◽  
D. S. Murthy ◽  
Chandra Mauli Kumar
Keyword(s):  
Solar Cells ◽  
Large Scale ◽  
High Efficiency ◽  
Silicon Wafers ◽  
Black Silicon ◽  
Diamond Wire ◽  
High Efficiency Solar Cells

scholarly journals Simulation and characterization of planar high-efficiency back contact silicon solar cells

2021 ◽  
Vol 24 (3) ◽  
pp. 319-327
Author(s):  
A.V. Sachenko ◽  
◽  
V.P. Kostylyov ◽  
R.M. Korkishko ◽  
V.M. Vlasiuk ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Short Circuit ◽  
Surface Recombination ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Back Contact ◽  
Planar Surfaces ◽  
High Efficiency Solar Cells

Short-circuit current, open-circuit voltage, and photoconversion efficiency of silicon high-efficiency solar cells with all back contact (BCSC) with planar surfaces have been calculated theoretically. In addition to the recombination channels usually considered in this kind of modeling, namely, radiative, Auger, Shockley–Read–Hall, and surface recombination, the model also takes into account the nonradiative trap-assisted exciton Auger recombination and recombination in the space charge region. It is ascertained that these two recombination mechanisms are essential in BCSCs in the maximum power operation regime. The model results are in good agreement with the experimental results from the literature.

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