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Photocurrent enhancement of ultrathin front-textured crystalline silicon solar cells by rear-located periodic silver nanoarrays

Yan, Wensheng; Tao, Zhikuo; Gu, Min; Richards, Bryce S.

Abstract (englisch):
Ultrathin crystalline silicon solar cells are alternative technology roadmap to achieve more cost-effectiveness. However, when silicon thickness is reduced to less than 50 µm, light absorption loss becomes severe, especially in the long wavelength range of 900–1200 nm. Therefore, it is significant to investigate the enhancements of photocurrent and efficiency by improving light absorption in the long wavelength range. In this work, we design and fabricate approximately 20 µm-thick front-textured monocrystalline silicon solar cells. When periodic silver nanoarrays with precise geometries are applied to the rear of the solar cells, the measured external quantum efficiency clearly reveals an enhancement in the longer wavelengths. For our best sample, the short-circuit current density and the absolute efficiency present the enhancements of ΔJsc = 0.8 mA/cm2 and Δη = 0.6%.



Originalveröffentlichung
DOI: 10.1016/j.solener.2017.04.046
Scopus
Zitationen: 8
Web of Science
Zitationen: 7
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 0038-092X, 1471-1257
KITopen-ID: 1000069226
HGF-Programm 43.23.04 (POF III, LK 01)
Erschienen in Solar energy
Band 150
Seiten 156–160
Bemerkung zur Veröffentlichung http://www.sciencedirect.com/science/article/pii/S0038092X17303390
Schlagworte Photovoltaic; Ultrathin crystalline silicon; Photocurrent enhancement; Silver nanoarrays; Plasmonic effect
Nachgewiesen in Web of Science
Scopus
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