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ANHARMONIC SIGNED

Anharmonic Semiconductors

Total Cost €

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EC-Contrib. €

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Partnership

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 ANHARMONIC project word cloud

Explore the words cloud of the ANHARMONIC project. It provides you a very rough idea of what is the project "ANHARMONIC" about.

self    discoveries    quantify    inorganic    semiconductors    crystalline    crystals    spectroscopy    organic    apart    spectroscopies    solid    investigation    raman    motions    combination    microscopic    electric    impedance    fundamental    energies    mechanism    anharmonic    localize    photoluminescence    binding    lattice    perovskites    resolved    screening    optical    scs    frequency    property    generalize    compare    perovskite    polar    elucidating    methodology    halide    behave    words    healing    solids    strategy    ionic    mobility    exhibit    fluctuations    small    perform    desirable    excellent    charges    photovoltaic    carriers    engineering    recent    gives    mobilities    coupled    spectroscopic    time    defect    carrier    showed    band    amplitude    electronic    density    terahertz    dynamics    modulated    outcome    beneficial    stimulated    relationship    scheme    tool    molecule    decreases    interactions    dielectric    local    hypothezise    liquid    induce    lifetimes    edge    anharmonicity    material    probe    conventional    reflectance    exciton   

Project "ANHARMONIC" data sheet

The following table provides information about the project.

Coordinator
WEIZMANN INSTITUTE OF SCIENCE 

Organization address
address: HERZL STREET 234
city: REHOVOT
postcode: 7610001
website: www.weizmann.ac.il

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Israel [IL]
 Total cost 1˙700˙000 €
 EC max contribution 1˙700˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2019-STG
 Funding Scheme ERC-STG
 Starting year 2019
 Duration (year-month-day) from 2019-11-01   to  2024-10-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    WEIZMANN INSTITUTE OF SCIENCE IL (REHOVOT) coordinator 1˙700˙000.00

Map

 Project objective

Recent studies of halide perovskite semiconductors (SCs) showed that they exhibit a unique combination of very-low defect density, self-healing properties and low exciton binding energies that result in excellent photovoltaic activity.

I hypothezise that the fundamental property that sets the halide perovskites apart from conventional SCs and gives rise to their beneficial properties is strongly anharmonic lattice dynamics. Large amplitude, local polar fluctuations that result from lattice anharmonicity localize the electronic states and enhance the screening of electric charges within the material. In other words, in some aspects, halide perovskites behave more like a liquid than a crystalline solid. Stimulated by the recent discoveries on halide perovskites, I aim to generalize our understanding of the relationship between lattice anharmonicity and the electronic properties of SCs. The potential outcome of this investigation will be a novel scheme to design SCs with desirable properties where lattice anharmonicity is used as a new material-engineering tool.

My strategy is to perform comparative studies in both inorganic ionic crystals and small-molecule organic crystals. We will use low-frequency Raman spectroscopy to quantify anharmonic lattice dynamics and compare between different crystals to identify the factors that induce anharmonicity in solids. Photoluminescence, reflectance, time-resolved terahertz and impedance spectroscopies will be used to probe the SCs optical properties, carrier mobilities and lifetimes, and their dielectric response. I expect to find that as anharmonicity increases, the dielectric response and carrier lifetimes increase while carrier mobility decreases. Finally, we will develop a modulated Raman spectroscopic methodology that will identify specific lattice motions that are coupled to band-edge carriers, thus elucidating the microscopic mechanism of carrier-lattice interactions.

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The information about "ANHARMONIC" are provided by the European Opendata Portal: CORDIS opendata.

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lastchecktime (2021-07-24 0:29:47) correctly updated