Optical Absorption Enhancement in Solar Cells via 3d Photonic Crystal Structures

Chen, Jiun-Yeu; Li, Eric; Chen, Lien-Wen

doi:10.2528/pierm10123008

Cited by 7 publications

(4 citation statements)

References 20 publications

(21 reference statements)

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“…For the former, research into slow light is anticipated to be especially useful in the fields of optical telecommunication including all-optical data storage and processing, whereas the latter can dramatically enhance optical absorption, gain, phase shift [80], and nonlinearity [79,16,55,56,9,78], which could improve and miniaturize numerous optical devices such as amplifiers and lasers (see [28,1]). For instance, slow light has been investigated for absorption enhancement for potential applications in increasing solar cell efficiency [19,15,63,14,17], the enhancement of gain or spontaneous emission of lasers [18,61,93,67], the miniaturization of antennas or radio-frequency devices [59,58,94,95,43,87], [36,Chap. 5], and the superamplification in high-power microwave amplifiers [69].…”

Section: Overview Of Applications Of Slow Lightmentioning

confidence: 99%

“…For instance, slow light has been investigated for absorption enhancement for potential applications in increasing solar cell efficiency [19,15,63,14,17], the enhancement of gain or spontaneous emission of lasers [18,61,93,67], the miniaturization of antennas or radio-frequency devices [59,58,94,95,43,87], [36,Chap. 5], and the superamplification in high-power microwave amplifiers [69].…”

Section: Overview Of Applications Of Slow Lightmentioning

confidence: 99%

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Pathological scattering by a defect in a slow-light periodic layered medium

Shipman

Welters

2016

Journal of Mathematical Physics

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Scattering of electromagnetic fields by a defect layer embedded in a slow-light periodically layered ambient medium exhibits phenomena markedly different from typical scattering problems. In a slow-light periodic medium, constructed by Figotin and Vitebskiy, the energy velocity of a propagating mode in one direction slows to zero, creating a "frozen mode" at a single frequency within a pass band, where the dispersion relation possesses a flat inflection point. The slow-light regime is characterized by a 3×3 Jordan block of the log of the 4×4 monodromy matrix for EM fields in a periodic medium at special frequency and parallel wavevector. The scattering problem breaks down as the 2D rightward and leftward mode spaces intersect in the frozen mode and therefore span only a 3D subspaceV of the 4D space of EM fields.Analysis of pathological scattering near the slow-light frequency and wavevector is based on the interaction between the flux-unitary transfer matrix T across the defect layer and the projections to the rightward and leftward spaces, which blow up as Laurent-Puiseux series. Two distinct cases emerge: the generic, non-resonant case when T does not mapV to itself and the quadratically growing mode is excited; and the resonant case, whenV is invariant under T and a guided frozen mode is resonantly excited.

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Section: Overview Of Applications Of Slow Lightmentioning

confidence: 99%

Section: Overview Of Applications Of Slow Lightmentioning

confidence: 99%

Pathological scattering by a defect in a slow-light periodic layered medium

Shipman

Welters

2016

Journal of Mathematical Physics

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“…The absorbance ratio (A) can be estimated from the relation: 2) Where: R is the reflectance ratio and T is the transmittance ratio of the plane-structured CH 3 NH 3 PbI 3 material. The ultimate efficiency η, representing the ideal efficiency without taking carrier recombination into account, can be expressed as [14]:…”

Section: Efficiencymentioning

confidence: 99%

Perovskite Thin Film Preparation and Energy Band-Gap Determination for Solar Cell Applicatiosn

Al-Tayyar¹,

Gangopadhyay²

2016

ETJ

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Using Perovskite is a promising approach for upgrading the performance of an established lowbandgap Si photo voltaic (PV) solar technology because Perovskite is a high bandgap polycrystalline semiconductor compared with bulk Si and other semiconductors such as GaAs. In this work, Perovskite-structured methyl ammonium lead triiodide CH 3 NH 3 PbI 3 uniform one-step planar thin films nanoparticles (NPs) have been developed from the reaction process of methylammonium iodide with PbI 2 and deposited on a glass substrate by Aerosol Assisted Chemical Vapor Deposition (AACVD) to minimize the size of the solar cell and to reduce the cost and increase efficiency. This aims at the study and investigation of the energy bandgap (E g ) of nano-architectured solar cells absorber film as light harvesters. The X-ray diffraction (XRD) patterns of a CH 3 NH 3 PbI 3 film on glass substrates are recorded by X' Pert Ultima IV X-ray diffractometer. Optical band gap of CH 3 NH 3 PbI 3 is estimated by UV−Vis absorption spectroscopy and extracted from the absorption spectrum of the Tauc plot to be 1.63 eV. The Perovskite deposited on glass appears efficient to absorb most of the light with wavelength below 800 nm with a refractive index (n): 2.75. The film thickness was measured by an optical profile-meter to be about 200 nm, giving small reflectivity of 0.23 and resulting in efficiency enhancement of 15.7 %.

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“…By this means, light could be directed to a desired area of the device. Due to this convenient feature, the use of PCs in photovoltaic applications has risen in recent years [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Optical visible wavelength region selective reflector design for photovoltaic cells using photonic crystal

Korkmaz¹,

Çetin²

2017

Turk J Phys

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Abstract:In this study, we have proposed an optical broadband angular reflector having a band selective feature and high reflectivity rate for photovoltaic implementations by using a photonic crystal structure made of two different dielectric layers. This paper presents new and useful information about a reflector that was designed by using a periodic structure composed of two Si based layers for the visible range in the solar spectrum region. The system has been adjusted in such a way that it could cover a wide wavelength area between the photonic band gaps at nearly λ ≈ 300-800 nm. We have tested the proposed reflector against different angles of incidence of the light. The reflectivity spectra of the optical structure have been calculated.

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Optical Absorption Enhancement in Solar Cells via 3d Photonic Crystal Structures

Cited by 7 publications

References 20 publications

Pathological scattering by a defect in a slow-light periodic layered medium

Pathological scattering by a defect in a slow-light periodic layered medium

Perovskite Thin Film Preparation and Energy Band-Gap Determination for Solar Cell Applicatiosn

Optical visible wavelength region selective reflector design for photovoltaic cells using photonic crystal

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