2026-06-27T10:33:49Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/65142024-08-29T16:26:58Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Dolado Fernández, Jaime
author
Hidalgo Alcalde, Pedro
author
Méndez Martín, María Bianchi
2023-06-16T15:22:25Z
2023-06-16T15:22:25Z
2020-09-15
0167-577X
10.1016/j.matlet.2020.128152
https://hdl.handle.net/20.500.14352/6514
http://dx.doi.org/10.1016/j.matlet.2020.128152
https://www.sciencedirect.com/
Herein, we report the influence of the surface conditions on the cathodoluminescence (CL) emissions from Zn_2GeO_4 nanowires and Zn_2GeO_4/SnO_2 heterostructures obtained by thermal evaporation technique. A Zn_2GeO_4 nanowire surrounded by a discontinuous shell of SnO_2 crystals composed the Zn_2GeO_4/SnO_2 heterostructures. Local CL measurements at different acceleration voltages allow monitoring the emission bands originated at the interface region, showing an additional deep-ultraviolet (UV) emission at 4.40 eV, which has not been previously reported. CL spectra from SnO_2 coated Zn_2GeO_4 nanowires also show this deep-UV emission. The results would confirm the presence of a shallow energy level close to the conduction band, which becomes active by passivation of Zn_2GeO_4 nanowires surface by the SnO_2 coating.
eng
The role of surface properties in the cathodoluminescence of Zn2GeO4/SnO2 nanowire heterostructures
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MendezBianchi107preprint.pdf
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14483
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MendezBianchi107preprint.pdf.txt