In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies

The dielectric response of materials underpins electronics and photonics. At high frequencies, dielectric polarizability sets the scale for optical density and absorption. At low frequencies, dielectric polarizability determines the band diagram of junctions and devices, and nonlinear effects enable...

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Main Authors: R. Jaramillo, J. Ravichandran
Format: Article
Language:English
Published: AIP Publishing LLC 2019-10-01
Series:APL Materials
Online Access:http://dx.doi.org/10.1063/1.5124795
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spelling doaj-7203bd895d2e444daf4486941897d47d2020-11-25T00:07:24ZengAIP Publishing LLCAPL Materials2166-532X2019-10-01710100902100902-610.1063/1.5124795In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategiesR. Jaramillo0J. Ravichandran1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02138, USAMork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, USAThe dielectric response of materials underpins electronics and photonics. At high frequencies, dielectric polarizability sets the scale for optical density and absorption. At low frequencies, dielectric polarizability determines the band diagram of junctions and devices, and nonlinear effects enable tunable capacitors and electro-optic modulators. More complicated but no less important is the role of dielectric response in screening bound and mobile charges. These effects control defect charge capture and recombination rates, set the scale for insulator-metal transitions, and mediate interactions among charge carriers and between charge carriers and phonons. In this perspective, we motivate the discovery of highly polarizable semiconductors by highlighting their potential to improve existing and enable new optoelectronic device technologies. We then suggest discovery strategies based on solid state chemical principles and building on recent efforts in computational materials screening.http://dx.doi.org/10.1063/1.5124795
collection DOAJ
language English
format Article
sources DOAJ
author R. Jaramillo
J. Ravichandran
spellingShingle R. Jaramillo
J. Ravichandran
In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
APL Materials
author_facet R. Jaramillo
J. Ravichandran
author_sort R. Jaramillo
title In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
title_short In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
title_full In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
title_fullStr In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
title_full_unstemmed In praise and in search of highly-polarizable semiconductors: Technological promise and discovery strategies
title_sort in praise and in search of highly-polarizable semiconductors: technological promise and discovery strategies
publisher AIP Publishing LLC
series APL Materials
issn 2166-532X
publishDate 2019-10-01
description The dielectric response of materials underpins electronics and photonics. At high frequencies, dielectric polarizability sets the scale for optical density and absorption. At low frequencies, dielectric polarizability determines the band diagram of junctions and devices, and nonlinear effects enable tunable capacitors and electro-optic modulators. More complicated but no less important is the role of dielectric response in screening bound and mobile charges. These effects control defect charge capture and recombination rates, set the scale for insulator-metal transitions, and mediate interactions among charge carriers and between charge carriers and phonons. In this perspective, we motivate the discovery of highly polarizable semiconductors by highlighting their potential to improve existing and enable new optoelectronic device technologies. We then suggest discovery strategies based on solid state chemical principles and building on recent efforts in computational materials screening.
url http://dx.doi.org/10.1063/1.5124795
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