Surface Plasmon Polariton-coupled Waveguide Back Reflector in Thin-film Silicon Solar Cell
Surface plasmon polariton (SPP) waveguide-coupled back reflector geometry is proposed for efficient light trapping and broadband absorption enhancement in thin-film silicon solar cells. The proposed geometry takes advantage of the localized surface plasmon (LSP) enhancement, Fabry-Perot (FP) resonan...
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| Main Authors: | , |
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| 格式: | Article |
| 語言: | English |
| 出版: |
2016
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/80301 http://hdl.handle.net/10220/40515 |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | Surface plasmon polariton (SPP) waveguide-coupled back reflector geometry is proposed for efficient light trapping and broadband absorption enhancement in thin-film silicon solar cells. The proposed geometry takes advantage of the localized surface plasmon (LSP) enhancement, Fabry-Perot (FP) resonance, and strong electric field confinement resulting from the SPP interference in a metal waveguide. It is shown that the designed light trapping structures contribute to significant light trapping and enhancement in the red to near-infrared part of the solar spectrum. For a thin-film silicon solar cell of 220-nm thickness, an absorption enhancement of 153 % is obtained when compared to a bare silicon solar cell. In comparison to other SPP-excited back reflection geometries, such as nano-gratings and nano-grooves, the proposed configuration shows a higher absorption enhancement factor and uniform field distribution inside the silicon layer. These results are expected to introduce new directions in the design of optimized nanoscale back reflectors in thin-film silicon solar cells. |
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