Highly efficient dual-plasmon polymer solar cell incorporating Au@SiO2 core–shell nanorods and Ag nanoparticles
| Autor: | Chen Shufen, Deng Lingling, Peng Ling, Zhang Qin, Feng Xiao-miao, Zhang Ran, Huang Wei |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry General Chemical Engineering Energy conversion efficiency Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polymer solar cell 0104 chemical sciences Photoactive layer Optoelectronics Nanorod Surface plasmon resonance 0210 nano-technology business Absorption (electromagnetic radiation) Current density Plasmon |
| Zdroj: | RSC Advances. 6:90944-90951 |
| ISSN: | 2046-2069 |
| Popis: | Generally, metallic nanoparticles (NPs) are widely employed in polymer solar cells (PSCs) to enhance power conversion efficiency (PCE) via the localized surface plasmon resonance (LSPR) effect. Herein, a significant performance enhancement is demonstrated in inverted PSCs by incorporating two kinds of metallic NPs on the rear side of photoactive layer. The Au nanorods (NRs) capped with ∼2 nm ultrathin SiO2 shells, with plasmonic absorption peaks of 520 nm for the transverse axis and 615 nm for the longitudinal axis (in deionized water), and 1 nm-ultrathin Ag NPs with an absorption peak of 517 nm, are in sequence spin-coated on a photoactive layer and thermally evaporated onto MoO3. To the best of our knowledge, this is the first time that Au NRs are directly spin-coated on a photoactive layer. The dual-plasmon device exhibits an improved short-circuit current density (JSC) of 10.36 mA cm−2 and an increased fill factor (FF) of 0.64, generating a PCE of 4.11% with a ∼30% enhancement factor compared with that of the reference device. The enhancement is attributed to the light absorption improvement in the photoactive layer over a wide wavelength range of 500–650 nm, induced by the LSPR of Au@SiO2 NRs and Ag NPs. In addition to the excitation of the LSPR effect, the incorporation of Ag NPs into MoO3 also contributes to the increase in FF value through enhancing the electric conductivity of MoO3. |
| Databáze: | OpenAIRE |
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