TY - JOUR
T1 - Conductivity improvement of topological insulators of Bi2Se3 by the P-N heterojunction of Bi2Se3/biocl
AU - Evaristo-Vázquez, M.
AU - Hernández-Pichardo, M. L.
AU - Rodríguez-González, E.
N1 - Publisher Copyright:
© 2019, Universidad Autonoma Metropolitana Iztapalapa. All rights reserved.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - New Bi2Se3/BiOCl composites were synthesized with a p-n heterojunction by two synthesis methods: coprecipitation and hydrothermal. Likewise, some synthesis parameters were modified such as the stabilizing agent concentration (EDTA) and the synthesis temperature. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and XPS spectroscopy. The electrical conductivity of the materials was determined by measuring the resistivity using the four point probe method. The results show that different growth mechanisms of the species are generated in the Bi2Se3/BiOCl composites, modifying the synthesis conditions. The morphologies and phases that are formed generate different electrical properties in these composites and the increase in the electrical conductivity of some samples can be attributed mainly to the formation of the stable p-n heterojunction between Bi2Se3 and BiOCl due to the generation of internal electric fields.
AB - New Bi2Se3/BiOCl composites were synthesized with a p-n heterojunction by two synthesis methods: coprecipitation and hydrothermal. Likewise, some synthesis parameters were modified such as the stabilizing agent concentration (EDTA) and the synthesis temperature. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and XPS spectroscopy. The electrical conductivity of the materials was determined by measuring the resistivity using the four point probe method. The results show that different growth mechanisms of the species are generated in the Bi2Se3/BiOCl composites, modifying the synthesis conditions. The morphologies and phases that are formed generate different electrical properties in these composites and the increase in the electrical conductivity of some samples can be attributed mainly to the formation of the stable p-n heterojunction between Bi2Se3 and BiOCl due to the generation of internal electric fields.
KW - BiSe/BiOCl composites
KW - Electrical conductivity
KW - P-n heterojunctions
KW - Topological insulators
UR - http://www.scopus.com/inward/record.url?scp=85071243632&partnerID=8YFLogxK
U2 - 10.24275/uam/izt/dcbi/revmexingquim/2019v18n3/Evaristo
DO - 10.24275/uam/izt/dcbi/revmexingquim/2019v18n3/Evaristo
M3 - Artículo
AN - SCOPUS:85071243632
SN - 1665-2738
VL - 18
SP - 813
EP - 823
JO - Revista Mexicana de Ingeniera Quimica
JF - Revista Mexicana de Ingeniera Quimica
IS - 3
ER -