Electronic transport in organic memories of chitosan with gold nanoparticles

Autor(es)

Valencia, German Ayala ^[1] ; Rodriguez Llanos, Jaiber Humberto ^[1] ; de Oliveira Vercik, Luci Cristina ^[1] ; Vercik, Andres ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Basic Sci Dept ZAB FZEA, BR-13635000 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF POLYMER ENGINEERING; v. 34, n. 2, p. 105-111, APR 2014.
• Citações Web of Science: 1

Resumo

The effect of gold nanoparticles (AuNPs) on the electronic transport in chitosan and chitosan/AuNPs films was experimentally and theoretically studied. The electronic properties (current-voltage curves) relative to the transport in the organic bulk in films were fitted to various models: space-charge limited current (SCLC), trapcharge limited current (TCLC) and scaling rule. However, it was found that the TCLC model, I-TCLC(V)alpha V1+ 1 and scaling rule, I(V)alpha(V-V-T)sic, describes better the electronic transport in chitosan and chitosan/AuNPs films. Current-voltage (I-V) curves showed an increasing conductivity with the AuNPs concentration. In addition, a bistable behavior was observed in chitosan/AuNPs films and it was attributed to the electron capture in the AuNPs. The results reported in this paper indicate that the electronic conductivity and bistable behavior in chitosan/AuNPs films could be controlled by the AuNPs incorporation on the chitosan matrix. (AU)

• Processo FAPESP: 10/50424-3 - Desenvolvimento e caracterização de filmes nanoestruturados para biossensores condutimetricos de peróxido de hidrogênio
• Beneficiário: Andrés Vercik
• Modalidade de apoio: Auxílio à Pesquisa - Regular