Plasmonic back contacts with non-ordered Ag nanostructures for light trapping in thin-film silicon solar cells

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• 作者：Ulrich W. Paetzold ; ^{u.paetzold@fz-juelich.de} ; Matthias Meier¹ ; ^{ma.meier@fz-juelich.de} ; Etienne Moulin² ; ^{e.moulin@fz-juelich.de} ; Vladimir Smirnov³ ; ^{v.smirnov@fz-juelich.de} ; Bart E. Pieters⁴ ; ^{b.pieters@fz-juelich.de} ; Uwe Rau⁵ ; ^{u.rau@fz-juelich.de} ; Reinhard Carius⁶ ; ^{r.carius@fz-juelich.de}
• 关键词：Thin-film solar cell ; Light trapping ; Plasmonic ; Nanostructures
• 刊名：Materials Science and Engineering: B
• 出版年：2013
• 出版时间：15 May, 2013
• 年：2013
• 卷：178
• 期：9
• 页码：630-634
• 全文大小：961 K

文摘

In this work, we investigate the light trapping of thin-film silicon solar cells which apply plasmonic Ag back contacts with non-ordered Ag nanostructures. The preparation, characterization and three-dimensional electromagnetic simulations of these back contacts with various distributions of non-ordered Ag nanostructures are presented. The measured reflectance spectra of the Ag back contacts with non-ordered nanostructures in air are well reproduced in reflectance spectra derived from the three-dimensional electromagnetic simulations of isolated nanostructures on Ag back contacts. The light-matter interaction of these nanostructures is given by localized surface plasmons and, thus, the measured diffuse reflectance of the back contacts is attributed to plasmon-induced light scattering. A significant plasmonic light-trapping effect in n-i-p substrate-type ¦Ìc-Si:H thin-film solar cell prototypes which apply a Ag back contact with non-ordered nanostructures is identified when compared with flat reference solar cells.