Multilayer silver nanoparticles for light trapping in thin film solar cells

Shi, Yanpeng; Wang, Xiaodong; Li, Wen; Yang, Taotao; Xu, Rui; Yang, Fuhua

doi:10.1063/1.4803676

Cited by 38 publications

(30 citation statements)

References 18 publications

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“…The power absorbed by the silicon absorber layer is calculated by applying a spatial filter which integrates the absorption within the filter region (here the a-Si substrate). The quantum efficiency and total quantum efficiency are calculated for all the designs considered [12].…”

Section: Proposed Solar Cell Designmentioning

confidence: 99%

“…Multiple arrays of nanostructures placed either on the front, rear or both are used to further enhance the absorption efficiency [11][12][13]. The phenomenon of energy transfer between discrete nano-structures located at the surface and active region of a solar cell is used to control the flow of energy and improve absorption efficiency [14].…”

Section: Introductionmentioning

confidence: 99%

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Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

Krishnan¹,

Das²,

Krishna³

et al. 2014

Opt. Express

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Abstract:In this paper, we present a theoretical study on the absorption efficiency enhancement of a thin film amorphous Silicon (a-Si) photovoltaic cell over a broad spectrum of wavelengths using multiple nanoparticle arrays. The light absorption efficiency is enhanced in the lower wavelengths by a nanoparticle array on the surface and in the higher wavelengths by another nanoparticle array embedded in the active region. The efficiency at intermediate wavelengths is enhanced by the simultaneous resonance from both nanoparticle layers. We optimize this design by tuning the radius of particles in both arrays, the period of the array and the distance between the two arrays. The optimization results in a total quantum efficiency of 62.35% for a 0.3 µm thick a-Si substrate.

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Section: Proposed Solar Cell Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

Krishnan¹,

Das²,

Krishna³

et al. 2014

Opt. Express

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show abstract

“…The visible EM spectrum can penetrate from ~100 nm (for λ=400 nm) to ~7 micrometer (μm) (for λ=700 nm) in crystalline Si (c-Si) and ~30 nm (for λ=400 nm) to ~100 μm (for λ=700 nm) in amorphous Si (a-Si) [14,15]. Recently, Shi et al had shown that light trapping can be enhanced by fabricating double layer Ag nanoparticles in silicon based materials [16].…”

Section: Introductionmentioning

confidence: 99%

“…The medium wavelength light couple with its corresponding size NCs, which should be located at an intermediate depth in the Si. In this study, we have investigated the optical absorption from staggered layers of Ag NCs synthesized in Si (100) substrate by sequentially implanting multiple energies (< 80 keV) and different fluences (ranging from ~1×10 16 to ~1×10 17 atoms/cm 2 ) of Ag ions and subsequent thermal annealing [17]. The details of the fabrication technique for the Ag staggered layer is reported elsewhere [17].…”

Section: Introductionmentioning

confidence: 99%

Improvement in the photocurrent collection due to enhanced absorption of light by synthesizing staggered layers of silver nanoclusters in silicon

Dhoubhadel¹,

Lakshantha²,

Lightbourne³

et al. 2015

AIP Conference Proceedings

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Abstract:The quest for increased efficiency of solar cells has driven the research in synthesizing photovoltaic cells involving Si based materials. The efficiency of solar cells involving crystalline Si is stalled around 25% for the last decade. Recently Shi et al. had shown that light trapping can be enhanced by fabricating double layers of Ag nanoparticles in silicon based materials. The light trapping is critically important in a photo devices such as solar cells in order to increase light absorption and efficiency. In the present work, we report enhancement in the absorption of light in Ag ion implanted Si substrates. Multiple low energies Ag ions, ranging from ~80 keV to ~30 keV, with different fluences ranging from ~1×1016 to ~1×10 17 atoms/cm 2 were sequentially implanted into commercially available Si (100) substrates followed by post-thermal annealing to create different sizes of Ag nanoclusters (NC) at different depths in the top 100 nm of the Si. The absorbance of light is increased in Ag implanted Si with a significant increase in the current collection in I-V (current-voltage) photo switching measurements. The experimental photovoltaic cells fabricated with the Agimplanted Si samples were optically characterized under AM (air mass) 1.5 solar radiation conditions (~1.0 kW/m 2 ). An enhancement in the charge collection were measured in the annealed samples, where prominent Ag NCs were formed in the Si matrix compared to the as-implanted samples with amorphous layers. We believe the enhancement of the photocurrent density from the samples with Ag NC is due to the improvement of efficiency of charge collection of e --h + pairs produced by the incident light.

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“…Additionally, various theoretical and experimental light trapping mechanisms have been reported for the better harvesting of light with the use of nanograting, nanoparticles and back reflectors etc. [1][2][3]. Hong et al have reported designing GaAs thin film solar cells by incorporating a silver nanoparticles in a periodical manner.…”

Section: Introductionmentioning

confidence: 99%

Grating influence study of GaAs solar cell structures

Saravanan¹,

Dubey²

2017

Nanosystems: Phys. Chem. Math.

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Thin film solar cells are having the problem of low absorption of light, particularly at longer wavelengths and hence, efficient light trapping engineering is demanded. Here, we propose a design of ultra thin GaAs solar cell with enhanced light absorption with the use of dual (dielectric and metal) gratings. In this way, light trapping can be enhanced at longer wavelengths for both TE and TM polarization modes.

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Multilayer silver nanoparticles for light trapping in thin film solar cells

Cited by 38 publications

References 18 publications

Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

Improvement in the photocurrent collection due to enhanced absorption of light by synthesizing staggered layers of silver nanoclusters in silicon

Grating influence study of GaAs solar cell structures

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