scholarly journals Improvement of polycrystalline silicon wafer solar cell efficiency by forming nanoscale pyramids on wafer surface using a self-mask etching technique

2013 ◽  
Vol 31 (3) ◽  
pp. 031401 ◽  
Author(s):  
Hsin-Han Lin ◽  
Wen-Hwa Chen ◽  
Franklin C.-N. Hong
Keyword(s):  
Solar Cell ◽  
Silicon Wafer ◽  
Polycrystalline Silicon ◽  
Wafer Surface ◽  
Etching Technique ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Mask Etching

Enhancement of silicon-wafer solar cell efficiency with low-cost wrinkle antireflection coating of polydimethylsiloxane

2018 ◽  
Vol 181 ◽  
pp. 15-20 ◽  
Author(s):  
Yaoju Zhang ◽  
Jun Zheng ◽  
Chaolong Fang ◽  
Zhihong Li ◽  
Xuesong Zhao ◽  
...  
Keyword(s):  
Solar Cell ◽  
Silicon Wafer ◽  
Low Cost ◽  
Antireflection Coating ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Polycrystalline Silicon Wafer Surface Color Defect Inspection Based on Machine Vision

2014 ◽  
Vol 548-549 ◽  
pp. 48-52 ◽  
Author(s):  
Han Wang ◽  
Rui Miao ◽  
Xiao Song Wu ◽  
Wang Yuan Ni ◽  
Xu Chen Tang
Keyword(s):  
Solar Cell ◽  
Machine Vision ◽  
Silicon Wafer ◽  
Polycrystalline Silicon ◽  
Silicon Solar Cell ◽  
Wafer Surface ◽  
Actual Application ◽  
Silicon Wafer Surface ◽  
Surface Defect Detection ◽  
Low Efficiency

As non-uniform color and complex texture exist on the polycrystalline silicon solar cell, manual surface inspection adopted by most domestic factories suffers from low efficiency and poor repetitive detection ability. To overcome the shortcomings of manual inspection, based on machine vision and SVM, an automatic silicon wafer surface defect detection and classification system has been developed in this paper: through feature extraction of color images and defect areas, a series of wafer classifiers are trained and used to separate the defective products from qualified ones. Experiments on samples and actual application in the enterprise show that the system has achieved high accuracy and fast run-time performance, indicating that machine vision is an effective and promising method for polycrystalline silicon solar cell inspection.

scholarly journals Toward High Solar Cell Efficiency with Low Material Usage: 15% Efficiency with 14 μm Polycrystalline Silicon on Glass

Solar RRL ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 2000058 ◽  
Author(s):  
Siddhartha Garud ◽  
Cham Thi Trinh ◽  
Daniel Abou-Ras ◽  
Bernd Stannowski ◽  
Rutger Schlatmann ◽  
...  
Keyword(s):  
Solar Cell ◽  
Polycrystalline Silicon ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Material Usage

Structural Defects in Polycrystalline Silicon and Their Effect on Solar Cell Efficiency

1977 ◽  
Vol 35 ◽  
pp. 296-297
Author(s):  
J. Narayan
Keyword(s):  
Solar Cell ◽  
Electrical Properties ◽  
Single Crystals ◽  
Polycrystalline Silicon ◽  
Structural Defects ◽  
Defect Structures ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Selection Of

Although extensive electron microscope studies of defect structures in silicon single crystals have been made, it appears that little or no attention has been given to the defect structures in polycrystalline silicon (Polysil) because it has been used almost exclusively as a source material subjected to further purification and growth into device grade single crystals. There is current interest in Polysil for fabrication of less expensive solar cells; however, improvement in the electrical properties will be necessary in order to achieve reasonable solar cell efficiency. Since most structural defects degrade the electrical properties of both p- and n-type silicon, the characterization of their structures will provide a basis for selection of better material and/or processes for reducing defect densities. The present work is part of a program which includes the evaluation and development of Polysil as a solar cell material. The observations reported here were made on Polysil obtained from Texas Instruments and Monsanto and are believed to be more or less representative of the structures observed in other Polysil material.

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

Solar cell efficiency tables (Version 58)

2021 ◽  
Author(s):  
Martin A. Green ◽  
Ewan D. Dunlop ◽  
Jochen Hohl‐Ebinger ◽  
Masahiro Yoshita ◽  
Nikos Kopidakis ◽  
...  
Keyword(s):  
Solar Cell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

scholarly journals CdTe-Based Thin Film Solar Cells: Past, Present and Future

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1684
Author(s):  
Alessandro Romeo ◽  
Elisa Artegiani
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Early Years ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

CdTe is a very robust and chemically stable material and for this reason its related solar cell thin film photovoltaic technology is now the only thin film technology in the first 10 top producers in the world. CdTe has an optimum band gap for the Schockley-Queisser limit and could deliver very high efficiencies as single junction device of more than 32%, with an open circuit voltage of 1 V and a short circuit current density exceeding 30 mA/cm2. CdTe solar cells were introduced at the beginning of the 70s and they have been studied and implemented particularly in the last 30 years. The strong improvement in efficiency in the last 5 years was obtained by a new redesign of the CdTe solar cell device reaching a single solar cell efficiency of 22.1% and a module efficiency of 19%. In this paper we describe the fabrication process following the history of the solar cell as it was developed in the early years up to the latest development and changes. Moreover the paper also presents future possible alternative absorbers and discusses the only apparently controversial environmental impacts of this fantastic technology.

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