Characterisation of Dislocation-Content in Multicrystalline-Silicon Wafers

2013 ◽  
Vol 205-206 ◽  
pp. 65-70
Author(s):  
Ali Ghaderi ◽  
Semih Senkader
Keyword(s):  
Silicon Wafers ◽  
Multicrystalline Silicon ◽  
Structural Defects ◽  
Limiting Factor ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Etch Pit ◽  
Process Characterization ◽  
Crystallisation Process ◽  
Dislocation Content

A major performance limiting factor of multicrystalline silicon wafers is structural defects, mainly dislocations, reducing solar cell efficiency. Dislocations are formed during crystallisation process. Characterization of dislocation-content is necessary both to optimise the crystallisation and to eliminate bad wafers before cell processing. We developed two techniques to characterise dislocations: conventional etch-pit counting modified for full size wafers using a new etch-recipe and a novel etch-pit counting algorithm. Secondly we developed a technique to estimate the dislocation content directly from photoluminescence images of as-cut wafers.

scholarly journals Corresponding relation between PL of multicrystalline silicon wafers and solar cell efficiency

2019 ◽  
Vol 64 (9) ◽  
pp. 923-927
Author(s):  
Liang He ◽  
Sheng Cao ◽  
Hai Liu ◽  
Hua Liu ◽  
Hongzhi Luo ◽  
...  
Keyword(s):  
Solar Cell ◽  
Silicon Wafers ◽  
Multicrystalline Silicon ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Solar Cell Efficiency Losses Due to Impurities From the Crucible in Multicrystalline Silicon

2014 ◽  
Vol 4 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Florian Schindler ◽  
Bernhard Michl ◽  
Jonas Schon ◽  
Wolfram Kwapil ◽  
Wilhelm Warta ◽  
...  
Keyword(s):  
Solar Cell ◽  
Multicrystalline Silicon ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Efficiency Losses

Characterization of defects in mono-like silicon wafers and their effects on solar cell efficiency

2014 ◽  
Vol 120 ◽  
pp. 289-294 ◽  
Author(s):  
Longfei Gong ◽  
Fengzhen Wang ◽  
Qing Cai ◽  
Da You ◽  
Bing Dai
Keyword(s):  
Solar Cell ◽  
Silicon Wafers ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

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.

Potential Gain in Multicrystalline Silicon Solar Cell Efficiency by n-Type Doping

2015 ◽  
Vol 5 (2) ◽  
pp. 499-506 ◽  
Author(s):  
Florian Schindler ◽  
Bernhard Michl ◽  
Andreas Kleiber ◽  
Heiko Steinkemper ◽  
Jonas Schon ◽  
...  
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Multicrystalline Silicon ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Potential Gain

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
Sign in / Sign up

Export Citation Format

Share Document