Defects and their features in semiconductor oxides films produced by spray-pyrolysis technique

• Grant number: 16/10973-4
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2016
• End date: September 30, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Marcio Peron Franco de Godoy
• Grantee: Marcio Peron Franco de Godoy
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: Ariano De Giovanni Rodrigues

Abstract

Our proposal is based on the investigation of wide bandgap semiconductors produced by spray-pyrolysis technique. Particularly, we focus in ZnO, CdO and CuO as well as their alloys. Due to the large bandgap, these systems have a technological appeal for light sources and optoelectronic devices. Our interest is to obtain the necessary defects-mediated conditions for optical transparency, electrical conductivity and photoconductivity to be applied in devices. In addition, metal transition doping is an interesting issue to investigate spintronics applications. Both interests are strongly dependent on structural defects, which can be managed during growth process as well as in post annealing. The defects engineering is the tool to develop some features as optical matching, photovoltaic response and photoconductivity. (AU)

Scientific publications

(13)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

IANHEZ-PEREIRA, CAMILA; RODRIGUES, ARIANO DE GIOVANNI; FRANCO DE GODOY, MARCIO PERON. Tailoring Stark effect in the 1.54 mu m emission of Er-doped ZnO thin films. SCRIPTA MATERIALIA, v. 192, p. 102-105, FEB 2021. (16/10973-4)

ONOFRE, Y. J.; DE CASTRO, S.; DE GODOY, M. P. F.. Effect of traps localization in ZnO thin films by photoluminescence spectroscopy. Materials Letters, v. 188, p. 37-40, FEB 1 2017. (13/17657-2, 16/10973-4)

ONOFRE, YINA J.; CATTO, ARIADNE C.; BERNARDINI, SANDRINE; FIORIDO, TOMAS; AGUIR, KHALIFA; LONGO, ELSON; MASTELARO, VALMOR R.; DA SILVA, LUIS F.; DE GODOY, MARCIO P. F.. Highly selective ozone gas sensor based on nanocrystalline Zn0.95Co0.05O thin film obtained via spray pyrolysis technique. Applied Surface Science, v. 478, p. 347-354, JUN 1 2019. (13/07296-2, 16/10973-4, 17/12437-5)

AGUILAR, OMAR; DE CASTRO, SUELEN; GODOY, MARCIO P. F.; DIAS, MARIAMA REBELLO SOUSA. Optoelectronic characterization of Zn1-xCdxO thin films as an alternative to photonic crystals in organic solar cells. OPTICAL MATERIALS EXPRESS, v. 9, n. 9, p. 3638-3648, SEP 1 2019. (16/10973-4)

ONOFRE, Y. J.; DE CASTRO, S.; RODRIGUES, A. D.; DE GODOY, M. P. F.. Influence of Co-doping on optical properties and traps localization of ZnO films obtained by spray pyrolysis. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, v. 128, p. 131-135, NOV 2017. (13/17657-2, 16/10973-4)

VIEIRA, C. E. R. F.; SOARES, D. A. W.; DE GODOY, M. P. F.; DA SILVA, M. J.; VARGAS, L. M. B.; ALVES, D. C.; PENA, F. S.; HOLGADO, D. P. A.; OKAZAKI, A. K.; RAPPL, P. H. O.; et al. Heated air sensitivity of Zn1-xCdxO films. Materials Research Bulletin, v. 138, JUN 2021. (16/10973-4)

CABRAL, L.; LOPEZ-RICHARD, VICTOR; DA SILVA, JUAREZ L. F.; MARQUES, G. E.; LIMA, MATHEUS P.; ONOFRE, Y. J.; TEODORO, M. D.; DE GODOY, M. P. F.. Insights into the nature of optically active defects of ZnO. Journal of Luminescence, v. 227, p. 10-pg., 2020-11-01. (17/11631-2, 16/10973-4, 13/18719-1, 18/21401-7, 18/20729-9, 14/19142-2, 14/07375-2)

SCOLFARO, D.; ONOFRE, Y. J.; TEODORO, M. D.; DE GODOY, M. P. F.. Atmosphere-Dependent Photoconductivity of ZnO in the Urbach Tail. INTERNATIONAL JOURNAL OF PHOTOENERGY, v. 2018, p. 8-pg., 2018-01-01. (16/10973-4)

SCOLFARO, D.; ONOFRE, Y. J.; TEODORO, M. D.; DE GODOY, M. P. F.. Atmosphere-Dependent Photoconductivity of ZnO in the Urbach Tail. INTERNATIONAL JOURNAL OF PHOTOENERGY, 2018. (16/10973-4)

IANHEZ-PEREIRA, CAMILA; ONOFRE, YINA JULIETH; MAGON, CLAUDIO JOSE; RODRIGUES, ARIANO DE GIOVANNI; DE GODOY, MARCIO PERON FRANCO. The interplay between Mn valence and the optical response of ZnMnO thin films. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, v. 126, n. 5, APR 11 2020. (16/10973-4, 13/07793-6)

SCOLFARO, D.; RODRIGUES, A. D.; DE GODOY, M. P. F.. Optical absorption in full composition range of ZnCuO thin films synthesized by spray pyrolysis. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, v. 124, n. 11, NOV 2018. (16/10973-4)

VARGAS, LUIS M. B.; DE CASTRO, SUELEN; PERES, MARCELOS L.; DE GODOY, MARCIO P. F.; SOARES, DEMETRIO A. W.. Tuning positive and negative photoconductivity in Zn1-xCdxO films. Journal of Alloys and Compounds, v. 749, p. 734-740, JUN 15 2018. (16/10973-4)

DE GODOY, M. P. F.; DE HERVAL, L. K. S.; COTTA, A. A. C.; ONOFRE, Y. J.; MACEDO, W. A. A.. ZnO thin films design: the role of precursor molarity in the spray pyrolysis process. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 31, n. 20, AUG 2020. (16/10973-4)