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Improve Spectral Control of Energy Harvesting Devices and Imagers for the Infrared Range Using Sub-Micron Lithography.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Improve Spectral Control of Energy Harvesting Devices and Imagers for the Infrared Range Using Sub-Micron Lithography./
Author:	Carlson, Emily S.
Description:	1 online resource (200 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
Contained By:	Dissertations Abstracts International85-03B.
Subject:	Electrical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798380341073

Improve Spectral Control of Energy Harvesting Devices and Imagers for the Infrared Range Using Sub-Micron Lithography.
Carlson, Emily S.

Improve Spectral Control of Energy Harvesting Devices and Imagers for the Infrared Range Using Sub-Micron Lithography. - 1 online resource (200 pages)

Source: Dissertations Abstracts International, Volume: 85-03, Section: B.

Thesis (Ph.D.)--Tufts University, 2023.

Includes bibliographical references

Infrared (IR) light - commonly known as heat - can be used as an energy source for energy harvesting devices or an information source for imagers. This work seeks to better the efficiency or resolution of these devices by improving photon management for IR radiation. Three devices will be focused on during this talk: multilevel diffractive lenses for IR imagers, and thermophotovoltaics (TPVs) and rectennas for energy harvesting applications. Improving the spectral control for all three of these devices requires submicron, but not nano-level, patterning, which leads to fabrication challenges if we want to pattern large-scale devices quickly. Resolution enhancement techniques such as optical proximity correction and contrast enhancement materials are explored to address this issue.Imaging devices often contain a refractive microlens array to focus light onto the photodiodes, but for IR wavelengths we've reached the limits to what the technology can accomplish. Multilevel diffractive lenses (MDLs) were proposed to focus light onto the diodes. This work will discuss the initial proof of concept design, fabrication, and characterization of MDLs for this application. Thermophotovoltaics (TPVs) are an energy harvesting device that converts infrared light into heat via the photovoltaic effect. TPV systems involve three stages: a thermal emitter, a filter, and a photodiode. This work will discuss modeling and fabrication process development of a photonic crystal filter and distributed Bragg reflector to allow photon recycling. Rectennas (or "rectifying antennas") are devices that convert electromagnetic (EM) radiation into electricity. Operating for IR energy sources requires high frequency antenna materials. A selective emitter can be introduced to absorb the EM radiation from the source and emit a narrow range of photons towards the rectenna. Fabrication results using resolution enhancement techniques are discussed.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380341073Subjects--Topical Terms:

596380
Electrical engineering.
Subjects--Index Terms:

Infrared opticsIndex Terms--Genre/Form:

554714
Electronic books.

Improve Spectral Control of Energy Harvesting Devices and Imagers for the Infrared Range Using Sub-Micron Lithography.
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