Improving light absorption in organic solar cells by plasmonic contribution

Duché, David; Torchio, Philippe; Escoubas, Ludovic; Monestier, F.; Simon, Jean‐Jacques; Flory, F.; Mathian, G.

doi:10.1016/j.solmat.2009.02.028

Cited by 205 publications

(96 citation statements)

References 14 publications

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“…10. 100,101 Nevertheless, it remains extremely difficult to have an experimental nanometer localization of the enhanced electromagnetic field. In classical surface enhanced spectroscopy, the final optical signal is measured in far field and the precise localization of hot spots remains impossible due to the poor resolution.…”

Section: Nanoplasmonicsmentioning

confidence: 99%

Optical properties of nanostructured materials: a review

2011

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Abstract. Depending on the size of the smallest feature, the interaction of light with structured materials can be very different. This fundamental problem is treated by different theories. If first order theories are sufficient to describe the scattering from low roughness surfaces, second order or even higher order theories must be used for high roughness surfaces. Random surface structures can then be designed to distribute the light in different propagation directions. For complex structures such as black silicon, which reflects very little light, the theory needs further development. When the material is periodically structured, we speak about photonic crystals or metamaterials. Different theoretical approaches have been developed and experimental techniques are rapidly progressing. However, some work still remains to understand the full potential of this field. When the material is structured in dimension much smaller than the wavelength, the notion of complex refractive index must be revisited. Plasmon resonance can be excited by a progressing wave on metallic nanoparticles inducing a shaping of the absorption band and of the dispersion of the extinction coefficient. This addresses the problem of the permittivity of such metallic nanoparticles. The coupling between several metallic nanoparticles induces a field enhancement in the surrounding media, which can increase phenomena like scattering, absorption, luminescence, or Raman scattering. For semiconductor nanoparticles, electron confinement also induces a modulated absorption spectra. The refractive index is then modified. The bandgap of the material is changed because of the discretization of the electron energy, which can be controlled by the nanometers size particles. Such quantum dots behave like atoms and become luminescent. The lifetime of the electron in the excited states are much larger than in continuous energy bands. Electrons in coupled quantum dots behave as they do in molecules. Many applications should be forthcoming in the near future in this field of research. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Section: Nanoplasmonicsmentioning

confidence: 99%

Optical properties of nanostructured materials: a review

2011

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“…The excited MNPs thereby strongly absorb (near-field effect) and scatter (far-field effect) the incident light, producing an enhancement up to a factor of 100 [3], in the electric field surrounding them [8]. Previous studies showed that the PCE of BHJOSCs was improved considerably by MNPs incorporated into OSC layers either on top of indium tin oxide (ITO) [9][10][11][12], within poly(3,4-ethyl-enedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) [13][14][15], within P3HT:PCBM [16], or with the back electrode [17].…”

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confidence: 99%

Optically-enhanced performance of polymer solar cells with low concentration of gold nanorods in the anodic buffer layer

Mahmoud

Zhang

et al. 2012

Organic Electronics

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Abstract:In this work, the effect of gold nanorods on the performance of poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C 61 -butyric-acid-methyl-ester bulk heterojunction solar cells was investigated. Gold nanorods were introduced into the anodic buffer layer by simply blending them with the solution of poly(3,4-ethyl-enedioxythiophene):poly(styrenesulfonate). Even with a fairly low density of the nanorods, the resulting devices showed a remarkable 21.3% enhancement in the power conversion efficiency and a 13% enlargement in the short circuit current. By examining the absorbance profiles of active films made with different conditions, such enhancements can be related to the localized transverse and longitudinal plasmon resonance modes in the metallic nanoparticles. Gold nanorods helped as well in reducing the device series resistance by up to 36%, which also contributed to the global enhancement in the efficiency.

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“…real part (a) and imaginary part (b). (λ), where e in (λ) is the incident flux [22,23]. Flux was determined by integrating the poynting vector of the fourier-transformed fields over the plane for each frequency.…”

Section: Meep (Mit Electromagnetic Equation Propagationmentioning

confidence: 99%

Enhancement in Optical Absorption of Plasmonic Solar Cells

Singh¹

2013

TOREJ

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Use of surface plasmons in photovoltaics is a recent and fast emerging field of interest of research that exploit the unique optical properties of metallic nano-structures. Using surface plasmons for guiding and localizing light at nanoscales can be used to improve optical absorption in thin-film solar cells. The present work focuses on the study of absorption enhancement using a periodic array of cylindrical silver nanowire placed on a thin silicon substrate. Studies have been made to optimize the particle size and the inter-particle distance for maximum absorption of AM1.5G solar radiation within the substrate. An enhancement with a factor of around 1.32 is observed for nanoparticles with a diameter of 140 nm and an inter-particle distance of 360 nm. Blue-shifting of resonance wavelength with increasing inter-particle distance is observed. FDTD technique has been used for numerical modelling and investigation of plasmonic solar cells.

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Improving light absorption in organic solar cells by plasmonic contribution

Cited by 205 publications

References 14 publications

Optical properties of nanostructured materials: a review

Optical properties of nanostructured materials: a review

Optically-enhanced performance of polymer solar cells with low concentration of gold nanorods in the anodic buffer layer

Enhancement in Optical Absorption of Plasmonic Solar Cells

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