Comparative study of multilayered nanostructures for enhanced solar optical absorption

Pabitra Dahal; Jeffrey Chou; Yu Wang; Sang Gook Kim; Jaime Viegas

doi:10.1557/adv.2016.7

Comparative study of multilayered nanostructures for enhanced solar optical absorption

Pabitra Dahal, Jeffrey Chou, Yu Wang, Sang Gook Kim, Jaime Viegas

Electrical Engineering

Massachusetts Institute of Technology

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Improved solar spectrum optical absorption in multilayered nanostructures consisting of metal, semiconductor and dielectric layers increase their potential for efficient photon to electron conversion. In this work, we analyze the influence of different nanostructure shapes and dimensions on the optical absorption in the vacuum wavelength range of 400 nm to 1500 nm based on Finite Domain Time Difference (FDTD) method. A periodic metallic photonic crystal composed of nanorods of gold, titanium oxide, and alumina is proposed by optimizing thickness of Au and TiO₂, aspect ratio, sidewall angle, and geometry of the elemental shape. A high aspect ratio structure consisting of elliptical nose cone elements with optimized dimensions is seen to absorb more than 90% of the solar spectrum in the range considered.

Original language	British English
Pages (from-to)	839-845
Number of pages	7
Journal	MRS Advances
Volume	1
Issue number	13
DOIs	https://doi.org/10.1557/adv.2016.7
State	Published - 2016

Keywords

absorption
nanostructure
optical properties

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10.1557/adv.2016.7

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title = "Comparative study of multilayered nanostructures for enhanced solar optical absorption",

abstract = "Improved solar spectrum optical absorption in multilayered nanostructures consisting of metal, semiconductor and dielectric layers increase their potential for efficient photon to electron conversion. In this work, we analyze the influence of different nanostructure shapes and dimensions on the optical absorption in the vacuum wavelength range of 400 nm to 1500 nm based on Finite Domain Time Difference (FDTD) method. A periodic metallic photonic crystal composed of nanorods of gold, titanium oxide, and alumina is proposed by optimizing thickness of Au and TiO2, aspect ratio, sidewall angle, and geometry of the elemental shape. A high aspect ratio structure consisting of elliptical nose cone elements with optimized dimensions is seen to absorb more than 90% of the solar spectrum in the range considered.",

keywords = "absorption, nanostructure, optical properties",

author = "Pabitra Dahal and Jeffrey Chou and Yu Wang and Kim, {Sang Gook} and Jaime Viegas",

note = "Funding Information: This work was supported in part under the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and the Massachusetts Institute of Technology, Cambridge, MA, USA, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. Publisher Copyright: {\textcopyright} Copyright Materials Research Society 2016.",

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doi = "10.1557/adv.2016.7",

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AU - Dahal, Pabitra

AU - Chou, Jeffrey

AU - Wang, Yu

AU - Kim, Sang Gook

AU - Viegas, Jaime

N1 - Funding Information: This work was supported in part under the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and the Massachusetts Institute of Technology, Cambridge, MA, USA, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. Publisher Copyright: © Copyright Materials Research Society 2016.

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N2 - Improved solar spectrum optical absorption in multilayered nanostructures consisting of metal, semiconductor and dielectric layers increase their potential for efficient photon to electron conversion. In this work, we analyze the influence of different nanostructure shapes and dimensions on the optical absorption in the vacuum wavelength range of 400 nm to 1500 nm based on Finite Domain Time Difference (FDTD) method. A periodic metallic photonic crystal composed of nanorods of gold, titanium oxide, and alumina is proposed by optimizing thickness of Au and TiO2, aspect ratio, sidewall angle, and geometry of the elemental shape. A high aspect ratio structure consisting of elliptical nose cone elements with optimized dimensions is seen to absorb more than 90% of the solar spectrum in the range considered.

AB - Improved solar spectrum optical absorption in multilayered nanostructures consisting of metal, semiconductor and dielectric layers increase their potential for efficient photon to electron conversion. In this work, we analyze the influence of different nanostructure shapes and dimensions on the optical absorption in the vacuum wavelength range of 400 nm to 1500 nm based on Finite Domain Time Difference (FDTD) method. A periodic metallic photonic crystal composed of nanorods of gold, titanium oxide, and alumina is proposed by optimizing thickness of Au and TiO2, aspect ratio, sidewall angle, and geometry of the elemental shape. A high aspect ratio structure consisting of elliptical nose cone elements with optimized dimensions is seen to absorb more than 90% of the solar spectrum in the range considered.

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KW - nanostructure

KW - optical properties

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Comparative study of multilayered nanostructures for enhanced solar optical absorption

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Keywords

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