Abstract
Performances of textured crystalline-silicon (c-Si) solar cells enhanced by silver nanoparticles (Ag-NPs) and indium nanoparticles (In-NPs) plasmonic effects are experimentally demonstrated and compared. Plasmonic nanoparticles integrated into textured c-Si solar cells can further increase the absorption and enhance the short-circuit current density (Jsc) of the solar cell. To examine the profile of the proposed metallic particles, the average diameter and coverage of the In-NPs (Ag-NPs) at 17.7 nm (19.07 nm) and 30.5% (35.1%), respectively, were obtained using scanning electron microscopy. Optical reflectance and external quantum efficiency response were used to measure plasmonic light scattering at various wavelengths. Compared to a bare reference cell, the application of In-NPs increased the Jsc of the cells by 8.64% (from 30.32 to 32.94 mA/cm2), whereas the application of Ag-NPs led to an increase of 4.71% (from 30.32 to 31.75 mA/cm2). The conversion efficiency of cells with embedded In-NPs (14.85%) exceeded that of cells with embedded Ag-NPs (14.32%), which can be attributed to the broadband plasmonic light scattering of the In-NPs.
Highlights
Most solar cells are made of silicon-based wafers with a thickness of 150–200 μm
The efficiency of solar cells is enhanced by plasmonic light scattering using metallic nanoparticles (NPs) [6,7,8,9]
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Summary
Most solar cells are made of silicon-based wafers with a thickness of 150–200 μm. Light trapping in crystalline-silicon (c-Si) solar cells is generally achieved using pyramidal structures on the surface to scatter incident light into the solar cell [1,2,3,4,5]. To investigate the plasmonic effects of metallic NPs on the textured c-Si solar cells, we began by depositing a 15-nm thick TiO2 spacer layer o6n66t9he bare textured c-Si solar cells using e-beam evaporation. FigureF8ig. uErQe E8.eEnQhaEnceenmhaennctesm(∆enEtQs E(Δ) EofQcEe)llowf ictehllInw-iNthPIsno-Nn PTsiOo2n sTpiaOc2ersplaayceerr, lcaeylelrw, citehllAwgi-thNPs on TiO2 sAFpigagc-uNerrPelsa8yo.neEr,TQciEOel2lenwsphiatchnecIrenml-aNyenePrtss, ce(eΔmlElbQwedEitdh)eoIdnf -icNnePltlhsweeimTthibOeI2nd/-dNAedPl2siOno3nt,haTeniTOdi2Oces2pl/lAawcl2eiOrth3l,aAyaengrd-,NcPelsl ewmitbhedded in TiOA2/gA-Nl2POs3eo.mn bTeidOd2esdpianceTriOla2y/Aerl,2Oce3l.l with In-NPs embedded in the TiO2/Al2O3, and cell with
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