RT Journal Article
T1 The role of surface properties in the cathodoluminescence of Zn2GeO4/SnO2 nanowire heterostructures
A1 Dolado Fernández, Jaime
A1 Hidalgo Alcalde, Pedro
A1 Méndez Martín, María Bianchi
AB 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.
PB Elsevier
SN 0167-577X
YR 2020
FD 2020-09-15
LK https://hdl.handle.net/20.500.14352/6514
UL https://hdl.handle.net/20.500.14352/6514
LA eng
NO ©2020 Elsevier B.V. All rights reserved.This work was supported by MICIN (Grant RTI2018-09195-B-I00).
NO Ministerio de Ciencia e Innovación  (MICINN)
DS Docta Complutense
RD 18 abr 2025