Gas sensor response of thin films: impact of p-n junctions

• Processo: 14/50725-4
• Linha de fomento: Auxílio à Pesquisa - Regular
• Vigência: 01 de março de 2015 - 31 de maio de 2016
• Área do conhecimento: Engenharias - Engenharia de Materiais e Metalúrgica - Materiais Não-metálicos
• Convênio/Acordo: MIT
• Pesquisador responsável: José Arana Varela
• Beneficiário: José Arana Varela
• Pesq. responsável no exterior: Harry Louis Tuller
• Instituição no exterior: Massachusetts Institute of Technology (MIT), Estados Unidos
• Instituição-sede: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brasil
• Vinculado ao auxílio: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais, AP.CEPID
• Assunto(s): Óxidos Semicondutores Sensores Cooperação internacional

Resumo

In 2010, we began an international cooperation with the Massachusetts Institute of Technology (MIT), with the group of Prof. Tuller, funded by MISTI MIT and FAPESP (proc. Nº 10/51959-8) and we have had both student and faculty exchanges between both Universities. In 2012, we received another cooperation project MIT-FAPESP (proc. Nº 12/51195-3) and again we achieved student and faculty exchange between our universities. Both projects were funded to study the sensor properties of pure and doped nanostructured semiconductors. During this cooperation we obtained impressive results that were published in high impact journals in the sensor and materiais science field (Sensors & Actuators B, 2014, submitted; Sensors & Actuators B, 186, 103, 2013; Adv. Func. Mater., 23, 1759, 2013). Moreover, based on our discovery that SnO rnicro-disks exhibit exceptional sensor response to NO2 gas, we have obtained a provisional patent via the MIT- Technology Licensing Office. Based on this previous successful cooperation, now we are proposing to continue the cooperation, by studying the role that p-n junctions can play in further enhancing gas senso r sensitivity and selectivity to different gaseous analytes. (AU)

Publicações científicas

(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)

BARBOSA, MARTIN S.; SUMAN, PEDRO H.; KIM, JAE J.; TULLER, HARRY L.; ORLANDI, MARCELO O. Investigation of electronic and chemical sensitization effects promoted by Pt and Pd nanoparticles on single-crystalline SnO nanobelt-based gas sensors. SENSORS AND ACTUATORS B-CHEMICAL, v. 301, DEC 12 2019. Citações Web of Science: 3.

BARBOSA, MARTIN S.; SUMAN, PEDRO H.; KIM, JAE J.; TULLER, HARRY L.; VARELA, JOSE A.; ORLANDI, MARCELO O. Gas sensor properties of Ag- and Pd-decorated SnO micro-disks to NO2, H-2 and CO: Catalyst enhanced sensor response and selectivity. SENSORS AND ACTUATORS B-CHEMICAL, v. 239, p. 253-261, FEB 2017. Citações Web of Science: 36.