Effect of nanostructured architecture on the enhanced optical absorption in silicon thin-film solar cells

Yao, Yung Chi; Tsai, Meng-Tsan; Lu, Pengfei; Wu, Chien-Jang; Lee, Ya Ju

doi:10.1080/09205071.2012.713189

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…Compared with other nanostructured arrays such as nanorods 25 , nanocones 26 , and nanodomes 27 , nanolens array has relatively high optical transmittance, which can provide superior power or light generation in optical devices 28 29 . The optical behavior of initial, deformed, and recovered nanostructures are compared in terms of transmittance with respect to wavelength ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Fullerene Embedded Shape Memory Nanolens Array

Jeon

Jang

Youn

et al. 2013

Sci Rep

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Securing fragile nanostructures against external impact is indispensable for offering sufficiently long lifetime in service to nanoengineering products, especially when coming in contact with other substances. Indeed, this problem still remains a challenging task, which may be resolved with the help of smart materials such as shape memory and self-healing materials. Here, we demonstrate a shape memory nanostructure that can recover its shape by absorbing electromagnetic energy. Fullerenes were embedded into the fabricated nanolens array. Beside the energy absorption, such addition enables a remarkable enhancement in mechanical properties of shape memory polymer. The shape memory nanolens was numerically modeled to impart more in-depth understanding on the physics regarding shape recovery behavior of the fabricated nanolens. We anticipate that our strategy of combining the shape memory property with the microwave irradiation feature can provide a new pathway for nanostructured systems able to ensure a long-term durability.

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Section: Resultsmentioning

confidence: 99%

Fullerene Embedded Shape Memory Nanolens Array

Jeon

Jang

Youn

et al. 2013

Sci Rep

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“…To discuss the influence of GaO x nanotips on the LED's light extraction efficiency, the FDTD method is performed [22]. We employed the FDTD analysis to simulate the interaction between the MQWs emission and the GaO x nanotips, which is realized by adopting periodic boundary conditions in the x and y directions, and a perfectly matched layer boundary condition in the z direction.…”

Section: Resultsmentioning

confidence: 99%

Local nanotip arrays sculptured by atomic force microscopy to enhance the light-output efficiency of GaN-based light-emitting diode structures

et al. 2014

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In this work, local nanotip arrays on GaN-based light-emitting (LED) structures were fabricated through nano-oxidation using an atomic force microscope (AFM). The photoluminescence (PL) intensity of the InGaN/GaN multiple quantum wells (MQWs) active layer and the light extraction efficiency of the LED structure were enhanced by forming this nanotips structure to serve as a graded-refractive index layer, which is further validated by the finite-difference time-domain analysis. The PL emission peak of the MQWs active layer has a blue-shift phenomenon that is caused by a partial reduction of the strain on the InGaN well. It is expected that our approach opens a promising route for simultaneously enhancing both the internal quantum efficiency and the light extraction efficiency of GaN-based LEDs. The proposed AFM-based method will be of importance for local patterning the light emitting components for optoelectronic applications.

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“…Due to the compatibility of the fabrication technology with micro-electronics, silicon photonics has attracted a lot of interests [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Fast Simulation Method of Silicon Nanophotonic Echelle Gratings and Its Applications in the Design of on-Chip Spectrometers

Song¹,

Chen²,

Li³

2013

PIER

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Abstract-Due to their very high integration density, echelle grating spectrometers based on silicon nanophotonic platforms have received great attention for their applications in many areas, such as optical sensors, optical communications, and optical interconnections. The design of echelle gratings requires an effective modeling and simulation technique. Though we have used a boundary integral method to accurately analyze the polarization-dependent performance of the echelle grating, it is complicated and time-consuming for the simulation due to its large size and aperiodic structure. In the present paper, we will present a faster simulation method for the grating with twice total internal reflection facets based on a modified Kirchhoff-Huygens principle with the influence of the Goos-Hänchen shift considered. On the one hand, the presented simulation results agree well with our previous results obtained by the boundary integral method when the shift can accurately be calculated using a FDTD method. On the other hand, the biggest advantage of the new method over the existing methods is that it can also provide an insightful physical explanation for many numerical results. Finally, we will effectively apply the present method to design an on-chip spectrometer with very low noise floor.

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Effect of nanostructured architecture on the enhanced optical absorption in silicon thin-film solar cells

Cited by 6 publications

References 33 publications

Fullerene Embedded Shape Memory Nanolens Array

Fullerene Embedded Shape Memory Nanolens Array

Local nanotip arrays sculptured by atomic force microscopy to enhance the light-output efficiency of GaN-based light-emitting diode structures

A Fast Simulation Method of Silicon Nanophotonic Echelle Gratings and Its Applications in the Design of on-Chip Spectrometers

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