Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Metal nanoparticles that exhibit plasmon resonance at UV-NiR range of the solar spectrum open new possibilities to improve light harvesting in solar cells (either organic, inorganic or hybrid one). The excitation of SPR results in an enhancement of electromagnetic field and by coupling plasmonic near-field to the semiconductor, its effective absorption cross-section is increased [1,2]. At LSPR nanoparticles can also act (depending on their geometry) as effective scattering elements with scattering cross-section a lot larger than geometrical one, increasing the optical path of light, thus allowing more light to be absorbed [2].
Nowadays it is difficult to predict how morphological structure of metallic nanoparticle influences on active layers components, therefore theoretical predictions are required. Nanoparticles dispersed in solution and spread out on the substrate aggregates, thus have different optical properties, depending on the degree of aggregation. In this work, the extinction spectra and electric near-field enhancement/distribution of single and dimer Au nanoprism with rounded edges were investigated by Finite Integration Technique [3].
In the experimental part of the studies we demonstrate plasmonic effects on the organic solar cells performance.
Acknowledgments
The project was supported by the Ministry of Science & Higher Education in Poland in 2014 year under Project No 06/62/DSMK/0192/2014.
References [1] Atwater, H. A.; Polman, A. Plasmonics for improved photovoltaic devices. Nat Mater. 2010, 9, 205–213. [2] Stratakis, E.; Kymakis, E. Nanoparticle-based plasmonic organic photovoltaic devices, Materials Today. 2013, 16, 133–146. [3] Grześkiewicz, B.; Ptaszyński, K.; Kotkowiak, M. Near and Far-Field Properties of Nanoprisms with Rounded Edges. Plasmonics. 2014, 10.1007%252Fs11468-014-9671-x.
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