Synthesis and optical properties of semiconductor systems for spintronics

• Grant number: 13/17657-2
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2014
• End date: January 31, 2016
• 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: Helder Vinícius Avanço Galeti ; Yara Galvão Gobato

Abstract

Our proposal is based on the investigation of semiconductor systems for spintronic applications. In this project we intend to implement the photoluminescence spectroscopy with spatial resolution, the so-called micro-photoluminescence technique (m-PL). For real applications in optoelectronic devices it is desirable that optical emission shows some degree of polarization at room temperature. Our study also involves the development of deposition system for semiconductor oxides by means of spray-pyrolysis method. Our proposal includes the study of deposited on amorphous and crystalline substrates. Following the development of system, we plan to include Co or Cd in the growth process. In particular, our interest is the conditions that these system present circularly polarized emission under and without external magnetic field as a function of temperature. For this purpose the optimization of optical and magneto-optical set-up will add new information on the structural, electrical and magnetic properties contributing to the comprehension and development of spintronics. (AU)

Scientific publications

(8)

(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)

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)

LOPES-OLIVEIRA, V.; HERVAL, L. K. S.; ORSI GORDO, V.; CESAR, D. F.; DE GODOY, M. P. F.; GALVAO GOBATO, Y.; HENINI, M.; KHATAB, A.; SADEGHI, M.; WANG, S.; et al. Strain and localization effects in InGaAs(N) quantum wells: Tuning the magnetic response. Journal of Applied Physics, v. 116, n. 23, DEC 21 2014. (13/17657-2, 12/24055-6, 11/17944-6, 12/02655-1)

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)

DREIFUS, D.; GODOY, M. P. F.; RABELO, A. C.; RODRIGUES, A. D.; GOBATO, Y. G.; CAMARGO, P. C.; PEREIRA, E. C.; DE OLIVEIRA, A. J. A.. Antiferromagnetism induced by oxygen vacancies in V2O5 polycrystals synthesized by the Pechini method. JOURNAL OF PHYSICS D-APPLIED PHYSICS, v. 48, n. 44, NOV 11 2015. (13/17657-2, 12/24025-0, 13/07296-2)

DE HERVAL, L. K. S.; ARSLANLAR, Y. TUNCER; AYVACIKLI, M.; IIKAWA, F.; NOBREGA, J. A.; PIZANI, P. S.; GALVAO GOBATO, Y.; CAN, N.; HENINI, M.; DE GODOY, M. P. F.. Enhancement of the luminescence intensity by co-doping Mn2+ into Er3+-doped SrAl2O4. Journal of Luminescence, v. 163, p. 17-20, JUL 2015. (13/17657-2, 12/24055-6)

HERVAL, LEONILSON K. S.; VON DREIFUS, DRIELE; RABELO, ADRIANO C.; RODRIGUES, ARIANO D.; PEREIRA, ERNESTO C.; GOBATO, YARA G.; DE OLIVEIRA, ADILSON J. A.; DE GODOY, MARCIO P. F.. The role of defects on the structural and magnetic properties of Nb2O5. Journal of Alloys and Compounds, v. 653, p. 358-362, DEC 25 2015. (12/24025-0, 13/17657-2)

DE CASTRO, S.; DOS REIS, S. L.; RODRIGUES, A. D.; DE GODOY, M. P. F.. Defects-related optical properties of Zn1-xCdxO thin films. MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, v. 212, p. 96-100, OCT 2016. (13/17657-2)

GORDO, V. ORSI; ARSLANLI, Y. TUNCER; CANIMOGLU, A.; AYVACIKLI, M.; GOBATO, Y. GALVAO; HENINI, M.; CAN, N.. Visible to infrared low temperature luminescence Er3+, Nd3+ and Sm3+ in CaSnO3 phosphors. Applied Radiation and Isotopes, v. 99, p. 69-76, MAY 2015. (13/17657-2, 12/24055-6)