Spontaneous emission of color centers at 4eV in hexagonal boron nitride under hydrostatic pressure

Koronski, Kamil; Kaminska, Agata; Zhigadlo, Nikolai D.; Elias, Christine; Cassabois, Guillaume; Gil, Bernard (2019). Spontaneous emission of color centers at 4eV in hexagonal boron nitride under hydrostatic pressure. Superlattices and microstructure, 131, pp. 1-7. Elsevier 10.1016/j.spmi.2019.05.018

[img] Text
1-s2.0-S0749603619308043-main.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (787kB) | Request a copy

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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Zhigadlo, Nikolai

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0749-6036

Publisher:

Elsevier

Language:

English

Submitter:

Franziska Bornhauser-Rufer

Date Deposited:

26 Feb 2020 12:42

Last Modified:

26 Feb 2020 12:42

Publisher DOI:

10.1016/j.spmi.2019.05.018

BORIS DOI:

10.7892/boris.140675

URI:

https://boris.unibe.ch/id/eprint/140675

Actions (login required)

Edit item Edit item
Provide Feedback