dor_id: 4161350

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650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

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351.#.#.b: Revista Mexicana de Física

351.#.#.a: Artículos

harvesting_group: RevistasUNAM.116

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850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: https://rmf.smf.mx/ojs/index.php/rmf/article/view/7208/7051

100.1.#.a: Vicencio Garrido, Marco Antonio; Juárez Satiesteban , Hector; Carranza Téllez, V.; Portillo, Melissa; Ramírez, N. Carlos; Robledo-Taboada, L. Humberto

524.#.#.a: Vicencio Garrido, Marco Antonio, et al. (2025). Zn-QDs Synthesis applying simultaneously the techniques of colloidal synthesis and sol gel and phenomenon at Zn2+ → Zn3+ + e−charge transfer. Revista Mexicana de Física; Vol. 71 Núm. 1 Jan-Feb, 2025. Recuperado de https://repositorio.unam.mx/contenidos/4161350

245.1.0.a: Zn-QDs Synthesis applying simultaneously the techniques of colloidal synthesis and sol gel and phenomenon at Zn2+ → Zn3+ + e−charge transfer

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Facultad de Ciencias, UNAM

264.#.0.c: 2025

264.#.1.c: 2025-01-01

653.#.#.a: Thermal annealing temperature; absorbance; cation; intra-transitions; photoluminescence

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884.#.#.k: https://rmf.smf.mx/ojs/index.php/rmf/article/view/7208

001.#.#.#: 116.oai:ojs2.rmf.smf.mx:article/7208

041.#.7.h: eng

520.3.#.a: ZnO-QD thin solid films are drop deposited on glass substrates and calcined in the air atmosphere at temperatures of 60°C, 100°C, 140°C, 160°C and 210°C, respectively. The samples are examined applying the techniques: Scanning Electron Microscopy (SEM), xRay Diffraction (XRD), Fourier transforms in the Infrared (FTIR), Photoluminescence (PL), Transmittance (% T), and absorbance (α). Tauc model, the band gap (Eg) energy is evaluated. The electrical measurements of Current-Voltage (I-V), the concentration of charge carriers, mobility and Resistance, are registered by Hall Effect. The morphology of the layers shows a structural configuration with stacked compact plates and flakes-like crystalline conglomerates with a fibrous appearance. The films show a Wurtzite-type crystalline phase according to the XRD diffractograms. The grain size increased by 3.6-6.9 nm. The dislocation density (δ) presents a gradual increase with the calcination temperatura δ ( lines /m2) ∼ 1.57×1015 −2.22×1015. On FT-IR spectroscopy analysis, various vibrational bands are associated with the CO23 ion and by-products generated by the hydrolysis of zinc acetate di-hydrate discussed. The Eg undergoes oscillatory and disorderly shifting towards higher photon energy, caused by faults at crystalline lattice of Eg ∼ 3.7 − 3.87 eV. In optical analysis, the discontinuity located at UV-Vis region is associated in principle at Zn2+ → Zn3+ + e−charge transfer. PL spectra at UV − Vis region records the emission bands with different relative intensity. The asymmetric Gaussian curve is associated with intrinsic defects in the crystal lattice. The deconvolution of the Gaussian curve generates different emission bands assigned to: red (RE) at ∼ 770 nm, blue (BE), green (GE) at 492-520 nm and yellow (YE) at 570-600 nm. The systematic construction of the Schottky diode is done by placing the corresponding thin film on ITO, then PEDOT: PSS was placed, then the silver contact and finally the P − n junction was identified.

773.1.#.t: Revista Mexicana de Física; Vol. 71 Núm. 1 Jan-Feb (2025)

773.1.#.o: https://rmf.smf.mx/ojs/index.php/rmf

022.#.#.a: ISSN electrónico: 2683-2224; ISSN impreso: 0035-001X

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599.#.#.a: 116

264.#.1.b: Facultad de Ciencias, UNAM; Sociedad Mexicana de Física

doi: https://doi.org/10.31349/RevMexFis.71.011002

harvesting_date: 2025-01-07 00:00:00.0

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Artículo

Zn-QDs Synthesis applying simultaneously the techniques of colloidal synthesis and sol gel and phenomenon at Zn2+ → Zn3+ + e−charge transfer

Vicencio Garrido, Marco Antonio; Juárez Satiesteban , Hector; Carranza Téllez, V.; Portillo, Melissa; Ramírez, N. Carlos; Robledo-Taboada, L. Humberto

Facultad de Ciencias, UNAM, publicado en Revista Mexicana de Física, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Facultad de Ciencias, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Vicencio Garrido, Marco Antonio, et al. (2025). Zn-QDs Synthesis applying simultaneously the techniques of colloidal synthesis and sol gel and phenomenon at Zn2+ → Zn3+ + e−charge transfer. Revista Mexicana de Física; Vol. 71 Núm. 1 Jan-Feb, 2025. Recuperado de https://repositorio.unam.mx/contenidos/4161350

Descripción del recurso

Autor(es)
Vicencio Garrido, Marco Antonio; Juárez Satiesteban , Hector; Carranza Téllez, V.; Portillo, Melissa; Ramírez, N. Carlos; Robledo-Taboada, L. Humberto
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Zn-QDs Synthesis applying simultaneously the techniques of colloidal synthesis and sol gel and phenomenon at Zn2+ → Zn3+ + e−charge transfer
Fecha
2025-01-01
Resumen
ZnO-QD thin solid films are drop deposited on glass substrates and calcined in the air atmosphere at temperatures of 60°C, 100°C, 140°C, 160°C and 210°C, respectively. The samples are examined applying the techniques: Scanning Electron Microscopy (SEM), xRay Diffraction (XRD), Fourier transforms in the Infrared (FTIR), Photoluminescence (PL), Transmittance (% T), and absorbance (α). Tauc model, the band gap (Eg) energy is evaluated. The electrical measurements of Current-Voltage (I-V), the concentration of charge carriers, mobility and Resistance, are registered by Hall Effect. The morphology of the layers shows a structural configuration with stacked compact plates and flakes-like crystalline conglomerates with a fibrous appearance. The films show a Wurtzite-type crystalline phase according to the XRD diffractograms. The grain size increased by 3.6-6.9 nm. The dislocation density (δ) presents a gradual increase with the calcination temperatura δ ( lines /m2) ∼ 1.57×1015 −2.22×1015. On FT-IR spectroscopy analysis, various vibrational bands are associated with the CO23 ion and by-products generated by the hydrolysis of zinc acetate di-hydrate discussed. The Eg undergoes oscillatory and disorderly shifting towards higher photon energy, caused by faults at crystalline lattice of Eg ∼ 3.7 − 3.87 eV. In optical analysis, the discontinuity located at UV-Vis region is associated in principle at Zn2+ → Zn3+ + e−charge transfer. PL spectra at UV − Vis region records the emission bands with different relative intensity. The asymmetric Gaussian curve is associated with intrinsic defects in the crystal lattice. The deconvolution of the Gaussian curve generates different emission bands assigned to: red (RE) at ∼ 770 nm, blue (BE), green (GE) at 492-520 nm and yellow (YE) at 570-600 nm. The systematic construction of the Schottky diode is done by placing the corresponding thin film on ITO, then PEDOT: PSS was placed, then the silver contact and finally the P − n junction was identified.
Tema
Thermal annealing temperature; absorbance; cation; intra-transitions; photoluminescence
Idioma
eng
ISSN
ISSN electrónico: 2683-2224; ISSN impreso: 0035-001X

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