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Surface Texturing with Hemispherical Cavities to Improve Efficiency in Silicon Solar Cells
Joint Authors
Costa, R. F. de Oliveira
Honorato, F. P.
de Lima Monteiro, D. W.
Salles, L. P.
Source
International Journal of Photoenergy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-26
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Improvement of solar-cell efficiency at a minimum possible cost addition is constantly sought, and this is often achieved at incremental percentage steps.
Among a number of alternatives, antireflective coatings and surface texturing are the most prominent.
This paper presents an alternative texturing method of crystalline silicon in an attempt to improve the efficiency of photon transmission through the surface and collection in the bulk.
The method relies on anisotropic etching of bulk silicon and requires only a single oxide mask and two etching steps with a KOH or TMAH aqueous solution.
The surface texture consists of smooth hemispherical cavities, which do not demand a lithographic mask or intricate technology processes to obtain the hemispherical cavities.
This method can be applied to increase the profile area of the originally flat frontal surface exposed to light and consequently increase the effective width of the depletion region.
The latter implies a higher probability of photon collection, contributing to the improvement of the conversion efficiency of the device.
The textured nontilted silicon solar-cell transmittance under small solar incidence angles at dawn and sunset is improved compared to a flat surface, increasing the photocurrent.
American Psychological Association (APA)
de Lima Monteiro, D. W.& Honorato, F. P.& Costa, R. F. de Oliveira& Salles, L. P.. 2012. Surface Texturing with Hemispherical Cavities to Improve Efficiency in Silicon Solar Cells. International Journal of Photoenergy،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-495234
Modern Language Association (MLA)
de Lima Monteiro, D. W.…[et al.]. Surface Texturing with Hemispherical Cavities to Improve Efficiency in Silicon Solar Cells. International Journal of Photoenergy No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-495234
American Medical Association (AMA)
de Lima Monteiro, D. W.& Honorato, F. P.& Costa, R. F. de Oliveira& Salles, L. P.. Surface Texturing with Hemispherical Cavities to Improve Efficiency in Silicon Solar Cells. International Journal of Photoenergy. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-495234
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-495234