Plasmon-enhanced optical absorption and photocurrent in organic bulk heterojunction photovoltaic devices using self-assembled layer of silver nanoparticles

Yoon, Woojun; Jung, Kim Hyun; Liu, Jiwen; Duraisamy, Thirumalai; Revur, Rao; Teixeira, F.L.; Sengupta, Suvankar; Berger, Paul R.

doi:10.1016/j.solmat.2009.08.006

Cited by 201 publications

(127 citation statements)

References 39 publications

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“…Therefore, we would expect that most of the photo-generated excitons near the ALB/P3HT:PCBM interface to be subjected to recombination processes. Hence, the number of free charge carriers that reached electrodes would be lowered, thus reducing both Voc and Jsc [7]. It is also possible that the larger density of NRs would prevent some light from reaching the active layer either by scattering or increased absorption in the NRs [15].…”

Section: Resultsmentioning

confidence: 99%

“…It has been reported that intensifying the electromagnetic (EM) field of the incident light via localized surface plasmon resonance (LSPR) in metallic nano-particles/structures (MNPs) helped in improving the absorption of the active layer with no need for increasing its thickness [4,7]. LSPR occurs when the frequency of the electric field of the incident light resonates with the oscillations of MNPs conduction electrons.…”

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confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

mentioning

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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“…This is in part because of the relatively narrow optical wavelength range in which typical donor and acceptor molecules absorb strongly. Seemingly the tunability of particle plasmon resonances via variation of their shapes, size, and dielectric environment should allow a broader spectral absorption range [4] for hybrid metallic nanostructure/OSC devices, which might be expected to produce enhanced solar cell efficiency [5][6][7][8][9][10], as has been found for Si-based devices [11]. Reports of the efficacy of this approach [5][6][7][8][9][10]12] however are contradictory.…”

Section: Introductionmentioning

confidence: 99%

“…Seemingly the tunability of particle plasmon resonances via variation of their shapes, size, and dielectric environment should allow a broader spectral absorption range [4] for hybrid metallic nanostructure/OSC devices, which might be expected to produce enhanced solar cell efficiency [5][6][7][8][9][10], as has been found for Si-based devices [11]. Reports of the efficacy of this approach [5][6][7][8][9][10]12] however are contradictory. Some, based upon simple transmission measurements and/or external quantum efficiency (EQE) measurements [5][6][7][8][9] of BHJ OSC devices which incorporated small (i.e., <50 nm in diameter) Ag or Au nanospheres, indicate an increase in the efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Reports of the efficacy of this approach [5][6][7][8][9][10]12] however are contradictory. Some, based upon simple transmission measurements and/or external quantum efficiency (EQE) measurements [5][6][7][8][9] of BHJ OSC devices which incorporated small (i.e., <50 nm in diameter) Ag or Au nanospheres, indicate an increase in the efficiency. For example, Mofa, et al [5] reported an increased power conversion efficiency, from 1.3% to 2.2%, on incorporation of silver nanospheres in a BHJ solar cell; however the device with Ag nanospheres exhibited a decrease in external quantum efficiency at the peak wavelength in extinction spectrum (450 nm).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

et al. 2015

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Abstract:We report on the effects of enhanced absorption/scattering from arrays of Au nanopillars of varied size and spacing on the spectral response of a P3HT:PCBM bulk heterojunction solar cell. Nanopillar array-patterned devices do show increased optical extinction within a narrow range of wavelengths compared to control samples without such arrays. The measured external quantum efficiency and calculated absorbance, however, both show a decrease near the corresponding wavelengths. Numerical simulations indicate that for relatively narrow nanopillars, the increased optical extinction is dominated by absorption within the nanopillars, rather than scattering, and is likely dissipated by Joule heating.

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Enhanced Structural Stability and Performance Durability of Bulk Heterojunction Photovoltaic Devices Incorporating Metallic Nanoparticles

Paci¹,

Spyropoulos

Generosi³

et al. 2011

Adv Funct Materials

108

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Despite the progress on organic photovoltaic (OPV) performance, the photoactive layer degradation during prolonged solar illumination is still a major obstacle. In this work, an approach to mitigate the degradation pathway related to structural/morphological changes of the photoactive layer occurring upon continuous illumination in air is presented. It is shown, for the first time, that the incorporation of Ag nanoparticles in poly(3‐hexylthiophene) (P3HT) and [6‐6]‐phenyl‐C61‐butyric acid methyl ester bulk heterojunction (BHJ) leads to improved structural and morphological properties of the composite BHJ solar cells and to better photovoltaic (PV) stability after long periods of continuous illumination. This is evidenced by an original approach based on joint in‐situ time‐resolved X‐ray and atomic force microscopy monitoring. Besides the structural stability improvement and reduced photodegradation rate, it is shown that the composite blends exhibit superior PV performance compared to the pristine BHJs. It can be postulated that the incorporation of metallic nanoparticles in the BHJ leads to a dual enhancement, a plasmon absorption mediated effect, causing improved initial cell efficiency, and a structural stability effect giving rise to reduced degradation rate upon prolonged illumination. The results are in favor of the exploitation of polymer–nanoparticle composites as a promising approach to mitigate the aging effects in OPVs.

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Plasmon-enhanced optical absorption and photocurrent in organic bulk heterojunction photovoltaic devices using self-assembled layer of silver nanoparticles

Cited by 201 publications

References 39 publications

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

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

Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

Enhanced Structural Stability and Performance Durability of Bulk Heterojunction Photovoltaic Devices Incorporating Metallic Nanoparticles

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