Electrical Behaviour of Crystal Defects in Silicon Solar Cells

Gum Arabica, an Electro-Active Bio-Polymer (EABP) is employed to develop photosensitive bio-complexes with chromophore matter collected from natural flowers and chlorophyll from plant leaves. The photosensitivity and enhancement of electro-activity of the developed complex and nano-cluster doped specimens of the same are examined experimentally. The electrical, optical, and photoelectrical characteristics are also investigated experimentally. It has been observed that the electrical property is mostly mixed conducting and can be tailored. The photo electrical behaviour is found to be fascinating. The developed complex is capable of absorbing light by losing or gaining electrons. The application potential of the developed complex toward light harvesting processes is exploited to develop a non-silicon based solar cell. The electrical characteristics of the developed solar cells are studied. The results obtained are good when compared to those of existing solar cells.

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Combined EL and LBIC Study of the Electrical Activity of Defects in Solar Cells Based on Innovative Wafers Grown by Casting Methods

Materials Science Forum ◽

10.4028/www.scientific.net/msf.725.137 ◽

2012 ◽

Vol 725 ◽

pp. 137-140

Author(s):

Benito Moralejo ◽

Vanesa Hortelano ◽

Oscar Martínez ◽

Juan Jiménez ◽

Miguel Angel González ◽

...

Keyword(s):

Solar Cells ◽

Electrical Activity ◽

Crystalline Silicon ◽

Crystal Defects ◽

Silicon Solar Cells ◽

Integrated Analysis ◽

Wafer Scale ◽

Crystalline Silicon Solar Cells ◽

Spatially Resolved

In this paper we combine LBIC and EL measurements of commercially multi-crystalline silicon solar cells, in order to obtain detailed information about the electrical activity around defect areas. This integrated analysis is suitable for the study of different crystal defects at both micrometric and full wafer scale. In particular, the electrical activity of some defect areas is studied in detail by means of highly spatially-resolved LBIC maps, showing important differences in their behaviours. A discussion about the origin of these differences is presented.

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Crystal defects and their impact on ribbon growth on substrate (RGS) silicon solar cells

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2013.07.019 ◽

2013 ◽

Vol 117 ◽

pp. 471-475 ◽

Cited By ~ 10

Author(s):

U. Hess ◽

P.Y. Pichon ◽

S. Seren ◽

A. Schönecker ◽

G. Hahn

Keyword(s):

Solar Cells ◽

Crystal Defects ◽

Silicon Solar Cells ◽

Ribbon Growth

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Electrical behaviour of n-type silicon solar cells under reverse bias: Influence of the manufacturing process

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2012.04.046 ◽

2012 ◽

Vol 104 ◽

pp. 175-179 ◽

Cited By ~ 6

Author(s):

Fabien Dauzou ◽

Raphaël Cabal ◽

Yannick Veschetti

Keyword(s):

Solar Cells ◽

Manufacturing Process ◽

Reverse Bias ◽

Silicon Solar Cells ◽

Electrical Behaviour ◽

Type Silicon

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Sodium Decoration of PID-s Crystal Defects after Corona Induced Degradation of Bare Silicon Solar Cells

Energy Procedia ◽

10.1016/j.egypro.2015.07.055 ◽

2015 ◽

Vol 77 ◽

pp. 397-401 ◽

Cited By ~ 27

Author(s):

Volker Naumann ◽

Dominik Lausch ◽

Christian Hagendorf

Keyword(s):

Solar Cells ◽

Crystal Defects ◽

Silicon Solar Cells

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Failure Analysis of Breakdown Sites in Silicon Solar Cells

ISTFA 2009: Conference Proceedings from the 35th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2009p0162 ◽

2009 ◽

Author(s):

Otwin Breitenstein ◽

Jan Bauer ◽

Jan-Martin Wagner ◽

Horst Blumtritt ◽

Nikolai Zakharov ◽

...

Keyword(s):

Solar Cells ◽

Reverse Bias ◽

Physical Mechanism ◽

Crystal Defects ◽

Silicon Solar Cells ◽

Etch Pits ◽

Lock In ◽

Microscopy Techniques ◽

Soft Breakdown ◽

High Reverse Bias

Abstract In this contribution the use of electroluminescence imaging, bias-dependent lock-in thermography, special dark and illuminated lock-in thermography techniques, and electron microscopy techniques is demonstrated for investigating the physical mechanism of breakdown in multicrystalline silicon solar cells. Two dominant breakdown mechanisms are identified, which are breakdown at recombination-active crystal defects, showing a relatively soft breakdown, and avalanche breakdown at dislocation-induced etch pits, which occurs very steep (hard breakdown) and dominates in our cells at high reverse bias.

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