%0 Journal Article
%T Spontaneous emission of color centers at 4eV in hexagonal boron nitride under hydrostatic pressure
%+ Laboratoire Charles Coulomb (L2C)
%+ Nanostructures quantiques propriétés optiques (NQPO)
%A Koronski, Kamil
%A Kaminska, Agata
%A Zighadlo, Nikolai D
%A Elias, Christine
%A Cassabois, Guillaume
%A Gil, Bernard
%< sans comité de lecture
%Z L2C:19-092
%@ 0749-6036
%J Superlattices and Microstructures
%I Elsevier
%V 131
%P 1
%8 2019-05-28
%D 2019
%R 10.1016/j.spmi.2019.05.018
%Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]
%Z Engineering Sciences [physics]/MaterialsJournal articles
%X The light emission properties of color centers emitting in 3.3–4 eV region are investigated for hydrostatic pressures ranging up to 5 GPa at liquid helium temperature. The light emission energy decreases with pressure less sensitively than the bandgap. This behavior at variance from the shift of the bandgap is typical of deep traps. Interestingly, hydrostatic pressure reveals the existence of levels that vary differently under pressure (smaller increase of the emission wavelength compared to the rest of the levels in this energy region or even decrease of it) with pressure. This discovery enriches the physics of the color centers operating in the UV in hBN.
%G English
%Z GANEX
%L hal-02141847
%U https://hal.science/hal-02141847
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021