Electronic color charts for dielectric films on silicon

Henrie, Justin; Kellis, Spencer; Schultz, Stephen M.; Hawkins, Aaron R.

doi:10.1364/opex.12.001464

Cited by 96 publications

(98 citation statements)

References 2 publications

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“…The chromaticity is compatible with Figure 7 in [27] or Figure 2b in [9] for the normal reflection (u = 0). We observe that for a thin ARC (single mode regime), the color (Fig.…”

Section: Achievable Color Space Depending On the Position Of The Obsesupporting

confidence: 77%

Temperature and color management of silicon solar cells for building integrated photovoltaic

et al. 2018

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Abstract. Color management of integrated photovoltaics must meet two criteria of performance: provide maximum conversion efficiency and allow getting the chosen colors with an appropriate brightness, more particularly when using side by side solar cells of different colors. As the cooling conditions are not necessarily optimal, we need to take into account the influence of the heat transfer and temperature. In this article, we focus on the color space and brightness achieved by varying the antireflective properties of flat silicon solar cells. We demonstrate that taking into account the thermal effects allows freely choosing the color and adapting the brightness with a small impact on the conversion efficiency, except for dark blue solar cells. This behavior is especially true when heat exchange by convection is low. Our optical simulations show that the perceived color, for single layer ARC, is not varying with the position of the observer, whatever the chosen color. The use of a double layer ARC adds flexibility to tune the wanted color since the color space is greatly increased in the green and yellow directions. Last, choosing the accurate material allows both bright colors and high conversion efficiency at the same time.

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“…The chromaticity is compatible with Figure 7 in [27] or Figure 2b in [9] for the normal reflection (u = 0). We observe that for a thin ARC (single mode regime), the color (Fig.…”

Section: Achievable Color Space Depending On the Position Of The Obsesupporting

confidence: 77%

Temperature and color management of silicon solar cells for building integrated photovoltaic

et al. 2018

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“…The Si wafer with 300 nm thermal SiO 2 was selected because the phase contrast between the monolayer membrane and the wafer results in a shift from violet-blue to blue (34). For all transferred films, we observed flat, continuous films largely free of defects over areas of several square millimeters (Fig.…”

Section: Resultsmentioning

confidence: 85%

Synthesis of linked carbon monolayers: Films, balloons, tubes, and pleated sheets

Schultz

Zhang

Unarunotai

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

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Because of their potential for use in advanced electronic, nanomechanical, and other applications, large two-dimensional, carbon-rich networks have become an important target to the scientific community. Current methods for the synthesis of these materials have many limitations including lack of molecular-level control and poor diversity. Here, we present a method for the synthesis of two-dimensional carbon nanomaterials synthesized by Mo-and Cu-catalyzed cross-linking of alkyne-containing selfassembled monolayers on SiO 2 and Si3N4. When deposited and cross-linked on flat surfaces, spheres, cylinders, or textured substrates, monolayers take the form of these templates and retain their structure on template removal. These nanomaterials can also be transferred from surface to surface and suspended over cavities without tearing. This approach to the synthesis of monolayer carbon networks greatly expands the chemistry, morphology, and size of carbon films accessible for analysis and device applications.networks ͉ nanomaterials ͉ self-assembled I n contrast to carbon nanotubes, fullerenes and various derivatives (1-3), the synthesis of large 2D sheets such as graphene (4), graphyne, and graphdiyne (5, 6) extending over micrometers in lateral dimensions is either in its infancy or has significant limitations. In fact, the synthesis of 2D carbon networks has been recognized as an outstanding challenge in materials chemistry (7).Graphene, the simplest of the 2D conjugated carbon nanomaterials, is produced by micromechanical cleavage of bulk graphite (HOPG) or by thermal decomposition of silicon carbide (8, 9). However, these approaches lack the molecular-level control necessary to define the chemical makeup of these systems. Scholl coupling reactions on oligophenylene precursors (10) produce small (Ͻ15 nm) 2D graphene fragments with improved molecular diversity, and radiation induced modifications of self-assembled (11, 12) or Langmuir-Blodgett (13) monolayers create larger sheets, but with reduced control of the chemistry. Polyelectrolytes (14) represent a different class of chemistry that can form 2D (15) and 3D (16) nanomaterials. These films are formed through deposition of separately synthesized polymers, often in layer-by-layer assemblies, in the form of relatively thick (typically Ͼ5 nm) films governed by electrostatic interactions. These limitations, together with those associated with the planar, radiation-cross-linked monolayers, motivate the need for alternative approaches to these classes of materials.A potential solution to the formation of large 2D conjugated carbon nanomaterials would employ a two-step procedure involving the formation of self-assembled monolayers (SAMs) with highly functionalized monomers followed by chemical crosslinkage of the SAMs to form linked monolayers. Fig. 1 shows the overall process beginning with the formation of SAMs of suitably designed carbon precursors on solid supports, followed by chemical cross-linking to yield covalently bonded networks with monolayer thicknesses. Not...

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“…An Oxygen flow 100 standard cubic centimeter cubic per minute (sccm) at ambient pressure was applied on a Si(100) wafer during 340 minutes to produce a SiO2 layer with 300 nm thick 12 , which was estimated by the time of synthesis and blueviolet color 13 of samples. The CuO films were deposited over the substrate at room temperature by DC sputtering, using a standard 2 SPI Module™ Sputter/ Carbon Coaters with a Quartz Crystal Thickness Monitor system was used.…”

Section: Methodsmentioning

confidence: 99%

CVD SYNTHESIS OF GRAPHENE FROM ACETYLENE CATALYZED BY A REDUCED CuO THIN FILM DEPOSITED ON SiO2 SUBSTRATES

Celedón

Zárate

2015

J. Chil. Chem. Soc.

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Few-layer graphene was grown by Chemical Vapor Deposition on a CuO thin film pre-deposited by sputtering on SiO2/Si substrates using acetylene as the carbon source. After evaporation of metal, graphene lies directly in contact with the SiO2 dielectric layer. Raman spectroscopy was used to confirm the presence of a single and/or few-layers of graphene. This procedure does not requiring any post processing to transfer the thin film onto a dielectric substrate or the use of ultra-high vacuum during synthesis.

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Electronic color charts for dielectric films on silicon

Cited by 96 publications

References 2 publications

Temperature and color management of silicon solar cells for building integrated photovoltaic

Temperature and color management of silicon solar cells for building integrated photovoltaic

Synthesis of linked carbon monolayers: Films, balloons, tubes, and pleated sheets

CVD SYNTHESIS OF GRAPHENE FROM ACETYLENE CATALYZED BY A REDUCED CuO THIN FILM DEPOSITED ON SiO2 SUBSTRATES

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