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exciTitania

Excitonic quasiparticles in Titania

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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Project "exciTitania" data sheet

The following table provides information about the project.

Coordinator
UNIVERSIDAD DEL PAIS VASCO/ EUSKAL HERRIKO UNIBERTSITATEA 

Organization address
address: BARRIO SARRIENA S N
city: LEIOA
postcode: 48940
website: www.ehu.es

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 Spain [ES]
 Project website http://nano-bio.ehu.es/
 Total cost 158˙121 €
 EC max contribution 158˙121 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-09-01   to  2019-08-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSIDAD DEL PAIS VASCO/ EUSKAL HERRIKO UNIBERTSITATEA ES (LEIOA) coordinator 158˙121.00

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 Project objective

Although titanium dioxide (TiO2) is widely employed in fields like photovoltaics and photocatalysis, the nature of its fundamental charge transfer excitations is still unknown. A deep understanding of the excitonic properties of TiO2 is of high relevance to achieve major advances in the aforementioned fields and may lead to the fabrication of new devices with enhanced performance in energy conversion applications.

In this research proposal we address three important aspects of the excitonic nature of TiO2, which have been raised by recent experiments and whose investigation requires exhaustive theoretical efforts. The first aspect is related to an observed anomaly in the temperature dependence of the excitons in both the rutile and anatase polymorphs of TiO2. The dependence of elementary excitations with temperature is a main subject in condensed matter physics, and its study provides crucial information on the quantum many-body interaction and correlation. The second aspect is about the interplay between charge transfer excitons and coherent phonons in TiO2. The experiments indicate again an unexpected behaviour of the semiconductor material in this respect. Finally, we aim to study the q-dispersion of the excitons, which will provide insightful knowledge on how these quasi particles propagates throughout the crystal.

The recurrent anomalous behaviour of TiO2 makes it an even more fascinating material than it is already considered, and its study could broaden its field of applicability in unimaginable ways. With this proposal, we intend to pave the wave for an exciting future of this versatile semiconductor, using state-of-the-art theoretical calculations in close collaboration with researchers conducting advanced spectroscopy measurements.

 Publications

year authors and title journal last update
List of publications.
2018 Edoardo Baldini, Tania Palmieri, Adriel Dominguez, Pascal Ruello, Angel Rubio, and Majed Chergui
Phonon-Driven Selective Modulation of Exciton Oscillator Strengths in Anatase TiO2 Nanoparticles
published pages: , ISSN: 1530-6984, DOI:
Nano Letters 2020-01-29
2019 Baldini, E.; Dominguez, A.; Palmieri, T.; Cannelli, O.; Rubio, A.; Ruello, P.; Chergui, M.
Exciton Control in a Room-Temperature Bulk Semiconductor with Coherent Strain Pulses
published pages: , ISSN: 2375-2548, DOI:
accepted in Science Advances 2020-01-29

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

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