Effect of passivation process in upgraded metallurgical grade (UMG)-silicon solar cells

We have investigated the effect of high-pressure pure hydrogen annealing (HPHA) for upgraded metallurgical grade (UMG)-silicon solar cell in order to obtain cost-effective high-efficiency cell using post-metallization anneal at a relatively low temperature. We have observed that high-pressure pure h...

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Bibliographic Details
Published inSolar energy materials and solar cells Vol. 95; no. 1; pp. 63 - 65
Main Author Chang, Hyo Sik
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 2011
Elsevier
Subjects
Annealing
Applied sciences
Conversion
Crystalline solar cell
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Energy
Exact sciences and technology
Guidelines
High pressure hydrogen annealing
Hydrogen storage
Hydrogenation
Minority carriers
Natural energy
Photoelectric conversion
Photovoltaic cells
Photovoltaic conversion
Solar cells
Solar cells. Photoelectrochemical cells
Solar energy
Upgraded metallurgical grade (UMG) silicon
Crystalline solar cell
High pressure hydrogen annealing
Upgraded metallurgical grade (UMG) silicon
Solar cell
Crystalline material
Silicon solar cells
Annealing
Heat treatment
Hydrogen
Silicon
High pressure
Passivation
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Summary:We have investigated the effect of high-pressure pure hydrogen annealing (HPHA) for upgraded metallurgical grade (UMG)-silicon solar cell in order to obtain cost-effective high-efficiency cell using post-metallization anneal at a relatively low temperature. We have observed that high-pressure pure hydrogen annealing effectively passivated the defects and improved the minority carrier lifetime, series resistance and conversion efficiency. It can be attributed to significantly improved hydrogenation in high-pressure pure hydrogen process. This improvement can be explained by the enhanced hydrogenation of silicon solar cell with antireflection layer due to hydrogen re-incorporation. The results of this experiment represent a promising guideline for improving the high-efficiency solar cells by introducing an easy and low cost process of post-hydrogenation in optimized condition.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2010.05.018