Gold nanoparticles functionalized with 4,4'-dithiobiphenyl blended with CuS in PMMA for switching memory devices

Autor(es)

Cerra, Sara ^[1] ; Pica, Paride ^{[1, 2]} ; Congiu, Mirko ^{[1, 2, 3]} ; Boratto, M. H. ^[3] ; Graeff, C. F. O. ^{[3, 4]} ; Fratoddi, Ilaria ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Rome Sapienza, Dept Chem, Ple A Moro 5, I-00185 Rome - Italy

^[2] Graeff, C. F. O., UNESP Sao Paulo State Univ, Sch Sci, Dept Phys, BR-17033360 Bauru, SP, Brazil.Cerra, Sara, Univ Rome Sapienza, Dept Chem, Ple A Moro 5, I-00185 Rome - Italy

^[3] UNESP Sao Paulo State Univ, Sch Sci, POSMAT Postgrad Program Mat Sci & Technol, BR-17033360 Bauru, SP - Brazil

^[4] UNESP Sao Paulo State Univ, Sch Sci, Dept Phys, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 31, n. 15 JUN 2020.
• Citações Web of Science: 0

Resumo

A switching memory device based on functionalized gold nanoparticles (AuNPs) and hexagonal copper sulfide nanocrystals (CuS), finely blended in polymethylmethacrylate matrix (PMMA), is herein presented. A two-electrode sandwich architecture has been implemented using aluminum top and bottom electrodes and a polymeric insulating layer based on PMMA/AuNPs/CuS. The device showed memory storage capabilities suitable for (Read Only Memory) ROM applications and behaves as a typical Write-Once, Read-Many-times (WORM) device. The results obtained with the blend containing AuNPs and/or CuS were compared with pure PMMA. By a voltage ramp in the range +/- 9 V, it was possible to permanently change the electrical resistance between the electrodes yielding an ON/OFF current ratio above 10(5)with long-term stability over the whole experiment duration (30 days). (AU)

• Processo FAPESP: 13/07396-7 - Novos Materiais para Células Solares Sensibilizadas por Corante
• Beneficiário: Mirko Congiu
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/20809-0 - Estudo de dispositivos orgânicos para aplicações em bioeletrônica
• Beneficiário: Miguel Henrique Boratto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado