Das System Siliciumtetrafluorid?Trimethylamin in L�sung

Schnell, E.

doi:10.1007/bf00905916

Cited by 7 publications

(4 citation statements)

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“…Recent works have extensively discussed concentration of the THz energy beyond the diffraction limit with metallic structures, including, nanoapertures 3 , tapers [4][5][6] and metal edges 7 . In particular, in Refs.…”

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confidence: 99%

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Tailoring Terahertz Near-Field Enhancement via Two-Dimensional Plasmons

2012

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We suggest a novel possibility for electrically tunable terahertz near-field enhancement in flatland electronic materials supporting two-dimensional plasmons, including recently discovered graphene. We employ electric-field effect modulation of electron density in such materials and induce a periodic plasmonic lattice with a defect cavity. We demonstrate that the plasmons resonantly excited in such a periodic plasmonic lattice by an incident terahertz radiation can strongly pump the cavity plasmon modes leading to a deep subwavelength concentration of terahertz energy, beyond λ/1000, with giant electric-field enhancement factors up to 10(4), which is 2 orders of magnitude higher than achieved previously in metal-based terahertz field concentrators.

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confidence: 99%

“…In particular, in Refs. 4,5 it was shown that tapered metallic rods and wedges can focus THz and mid-infrared radiation into a nanometer-size spots. In Ref.…”

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confidence: 99%

Tailoring Terahertz Near-Field Enhancement via Two-Dimensional Plasmons

2012

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“…[35] Based on the device construction and software configuration features, a modular two-step 2D numerical simulation was conducted on FDTD solutions (optical simulations) and DEVICE software (electrical simulations), as already successfully adopted by Schnell et al and Arjmand and Mcguire. [36,37] The first step was to obtain the 2D map of the light absorption and optical generation rate inside the considered device based on 2D Maxwell's equations. The standard reference spectrum AM1.5G at 1 sun irradiance (1000 W m À2 ) was introduced as the incident light source.…”

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confidence: 99%

High‐Efficiency Interdigitated Back Contact Silicon Solar Cells with Front Floating Emitter

Ding

Lin

Liu

et al. 2019

Physica Status Solidi (a)

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Silicon interdigitated back contact (IBC) solar cells with front floating emitter (FFE‐IBC) put forward a new carrier transport concept of “pumping effect” for minority carriers compared with traditional IBC solar cells with front surface field (FSF‐IBC). Herein, high‐performance FFE‐IBC solar cells are achieved theoretically combining superior crystalline silicon quality, front surface passivation, and shallow groove structure using 2D device model. The improvement of minority carrier transport capacity is realized in the conductive FFE layer through optimizing the doping concentration and junction depth. It is shown that the shallow groove on the rear side of FFE‐IBC solar cells can effectively enhance the carrier collection ability by means of minimizing the negative impact of undiffused gap or surface p–n junction. The high efficiency exceeding 25% can be realized on silicon FFE‐IBC solar cells with the novel cell structure and optimized cell parameters, where the back surface field and emitter region width can be made for the same with only a slight sacrifice of photocurrent density and conversion efficiency. It is demonstrated theoretically that the realization of high‐efficiency and low‐cost silicon IBC solar cells is feasible due to the increase of the module fabrication tolerance.

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“…Cascaded fi eld enhancement was achieved by using coupled gold nanoantennae of decreasing sizes. V-shaped nanogrooves and waveguides, another type of nanostructure with tiny gaps, are often used as light-concentration device, [25][26][27] in which the fi eld can be strongly confi ned in the bottom of the V gaps and the EM energy can be transferred between the LSPs and the propagating SP waves. Based on these heuristic ideas and structures, several research groups [ 2,4,6,12,13 ] have proposed many useful functional applications of V nanogrooves.In the practical application of such plasmonic nanostructures, the key issues are the precise control of the nanogaps and the uniformity of the whole structure, which gives much challenge to nanofabrication.…”

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confidence: 99%

M‐shaped Grating by Nanoimprinting: A Replicable, Large‐Area, Highly Active Plasmonic Surface‐Enhanced Raman Scattering Substrate with Nanogaps

Zhu

Bai

Duan

et al. 2014

Small

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Plasmonic nanostructures separated by nanogaps enable strong electromagnetic-field confinement on the nanoscale for enhancing light-matter interactions, which are in great demand in many applications such as surface-enhanced Raman scattering (SERS). A simple M-shaped nanograting with narrow V-shaped grooves is proposed. Both theoretical and experimental studies reveal that the electromagnetic field on the surface of the M grating can be pronouncedly enhanced over that of a grating without such grooves, due to field localization in the nanogaps formed by the narrow V grooves. A technique based on room-temperature nanoimprinting lithography and anisotropic reactive-ion etching is developed to fabricate this device, which is cost-effective, reliable, and suitable for fabricating large-area nanostructures. As a demonstration of the potential application of this device, the M grating is used as a SERS substrate for probing Rhodamine 6G molecules. Experimentally, an average SERS enhancement factor as high as 5×10⁸ has been achieved, which verifies the greatly enhanced light-matter interaction on the surface of the M grating over that of traditional SERS surfaces.

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Das System Siliciumtetrafluorid?Trimethylamin in L�sung

Cited by 7 publications

References 0 publications

Tailoring Terahertz Near-Field Enhancement via Two-Dimensional Plasmons

Tailoring Terahertz Near-Field Enhancement via Two-Dimensional Plasmons

High‐Efficiency Interdigitated Back Contact Silicon Solar Cells with Front Floating Emitter

M‐shaped Grating by Nanoimprinting: A Replicable, Large‐Area, Highly Active Plasmonic Surface‐Enhanced Raman Scattering Substrate with Nanogaps

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