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Fabrication and Characterization of Optical Photodetectors Using Organic Thermoelectrics.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Fabrication and Characterization of Optical Photodetectors Using Organic Thermoelectrics./
作者:	Potter, Thaddeus B.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	65 p.
附註:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
標題:	Physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27993221
ISBN:	9798641018423

Fabrication and Characterization of Optical Photodetectors Using Organic Thermoelectrics.
Potter, Thaddeus B.

Fabrication and Characterization of Optical Photodetectors Using Organic Thermoelectrics. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 65 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.S.)--University of Massachusetts Lowell, 2020.

This item must not be sold to any third party vendors.

A substantial amount of literature has been published concerning the detection of light using thermoelectric materials. While able to achieve neither the single photon sensitivity of a photomultiplier nor the nanosecond response time of cascade photodiodes, thermoelectric materials show promise as inexpensive, broadband detectors whose sensitivity extends from the visible well into the IR.Thermoelectrics have therefore been of significant interest in the realm of optoelectronic devices. Currently available thermopile detectors are comprised of n-type, inorganic materials such as Bismuth. Although these devices have achieved strong performance, they are ultimately limited by their low Seebeck coefficients.Ionic liquids have also been investigated for their thermoelectric properties due to their extremely high Seebeck coefficient, reaching as high as -3630 uV/K. However, these materials are limited by their exceedingly long carrier diffusion time: the time constant of a detector based on an ionic liquid would be on the order of minutes.A class of materials which exhibit high Seebeck coefficients and good conductivity without compromising response time by using heavy charge carriers, conducting polymers can be easily solution-processed on any solvent compatible substrate, and are capable of scaling up to roll-to-roll processes. One such polymer, which has attracted much interest in recent years, is poly(3,4-diethoxythiophene) (PEDOT). It shows conductivity on the order of 100 S/cm-1, Seebeck coefficient of 60 uV/K-1 and good environmental stability.This report presents a characterization of differently treated PEDOT films, and a demonstration of their use in thermocouple-based photodetectors. This report is meant as a proof of concept for a device of this type using PEDOT.

ISBN: 9798641018423Subjects--Topical Terms:

516296
Physics.
Subjects--Index Terms:

Thermoelectrics

Fabrication and Characterization of Optical Photodetectors Using Organic Thermoelectrics.
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520 $a A substantial amount of literature has been published concerning the detection of light using thermoelectric materials. While able to achieve neither the single photon sensitivity of a photomultiplier nor the nanosecond response time of cascade photodiodes, thermoelectric materials show promise as inexpensive, broadband detectors whose sensitivity extends from the visible well into the IR.Thermoelectrics have therefore been of significant interest in the realm of optoelectronic devices. Currently available thermopile detectors are comprised of n-type, inorganic materials such as Bismuth. Although these devices have achieved strong performance, they are ultimately limited by their low Seebeck coefficients.Ionic liquids have also been investigated for their thermoelectric properties due to their extremely high Seebeck coefficient, reaching as high as -3630 uV/K. However, these materials are limited by their exceedingly long carrier diffusion time: the time constant of a detector based on an ionic liquid would be on the order of minutes.A class of materials which exhibit high Seebeck coefficients and good conductivity without compromising response time by using heavy charge carriers, conducting polymers can be easily solution-processed on any solvent compatible substrate, and are capable of scaling up to roll-to-roll processes. One such polymer, which has attracted much interest in recent years, is poly(3,4-diethoxythiophene) (PEDOT). It shows conductivity on the order of 100 S/cm-1, Seebeck coefficient of 60 uV/K-1 and good environmental stability.This report presents a characterization of differently treated PEDOT films, and a demonstration of their use in thermocouple-based photodetectors. This report is meant as a proof of concept for a device of this type using PEDOT.
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