Title :

ABiO(2)X (A = Cd, Ca, Sr, Ba, Pb; X = halogen) Silien X1 Series: Polymorphism Versus Optical Properties

Author(s) :

Olchowka, Jacob [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
University of Siegen = Universität Siegen [Siegen]
Kabbour, Houria [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Colmont, Marie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Adlung, Matthias [Auteur]
University of Siegen = Universität Siegen [Siegen]
Wickleder, Claudia [Auteur]
University of Siegen = Universität Siegen [Siegen]
Mentre, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Inorganic Chemistry

Abbreviated title :

Inorg. Chem.

Volume number :

55

Pages :

7582-7592

Publication date :

2016-07-14

ISSN :

0020-1669

HAL domain(s) :

Chimie

English abstract : [en]

The Sillen X1 series of Bi3+A2+O2X (A = Cd, Ca, Sr, Ba, Pb; X = Cl, Br, I) compounds is composed of three main crystallographic types, namely, the tetragonal form (space group (S.G.) I4/mmm), the orthorhombic form (S.G. ...
Show more >The Sillen X1 series of Bi3+A2+O2X (A = Cd, Ca, Sr, Ba, Pb; X = Cl, Br, I) compounds is composed of three main crystallographic types, namely, the tetragonal form (space group (S.G.) I4/mmm), the orthorhombic form (S.G. Cmcm), and the monoclinic form (S.G. P21/m). Because of Bi3+/A2+ disorder the Bi3+ based photoluminescence (PL) of the tetragonal polytypes is quenched at room temperature (RT). In the two other ordered forms, the Bi–O–Bi connectivity is different but limited, such that bluish/greenish emission occurs at RT in the monoclinic CdBiO2Cl and CaBiO2Cl and orthorhombic SrBiO2Cl and BaBiO2Cl phases. The crystal structure of BaBiO2Br was refined in the orthorhombic Cmcm space group and also shows RT emission. Focusing on the RT luminescent activity as a key parameter, the PL active compounds were investigated by means of density functional theory calculations and UV–visible reflectance spectroscopy. The influence of A and X ions on the excitation energy is discussed by analyzing the A–O–Bi and Bi–X bonding schemes and gives some insights for rational tuning of both the excitation and emission energies.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Matériaux inorganiques, structures, systèmes et propriétés (MISSP)

Submission date :

2023-05-30T16:23:51Z
2024-04-22T08:25:17Z