Abstract
The multifunctional silica-coated Au nanobowtie (GNB@SiO2) core-shell structure was embedded in organic solar cells (OSCs), and an intense performance promotion of the devices was achieved by optimizing the shape and the size of the GNB@SiO2. The light absorption of the active layer was increased with GNB@SiO2 doping concentration increasing until the doping concentration exceeds 10 nM. The devices obtain the best J-V characteristics when GNB@SiO2 doping concentration is 10 nM. Comparing with that of the control cells, the optimal performance of the devices with GNB@SiO2 incorporated was significantly increased by 47%. The finite-difference time-domain method was used to simulate the special asymmetry shape and the size of the multifunctional GNB@SiO2 impact on the performance of the OSCs. The electric field intensity |E|2 in the different planes revealed that the local surface plasmon resonance (LSPR) and far-field scattering effect played an important role in the light absorption of the devices. The cooperation effect of LSPR near-field and the far-field scattering resulted in the electric field redistribution of the active layer as the result of the absorption enhanced.
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This work was supported by the National Natural Science Foundation of China (No. 61704028), Natural Science Foundation of Fujian Province, China (No. 2019 J01217).
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Jin, M., Zheng, Q., Ma, G. et al. Enhanced performance of organic solar cells with multifunctional silica-coated Au nanobowtie core-shell structure. J Nanopart Res 22, 277 (2020). https://doi.org/10.1007/s11051-020-05008-0
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DOI: https://doi.org/10.1007/s11051-020-05008-0