Details

Autor(en) / Beteiligte

• Li, Yue
• Sui, Wen
• Li, Jian-Chang

Titel

Interfacial Effects on Resistive Switching of Flexible Polymer Thin Films Embedded with TiO2 Nanoparticles

Ist Teil von

• Journal of physical chemistry. C, 2017-04, Vol.121 (14), p.7944-7950

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The resistive switching of polymer films embedded with nanoparticles (NPs) has attracted great attention for the promising application in flexible memory devices. However, the polymer/NP interface, which is believed to play a key role in the switching performance, makes its elucidation a vital issue. Herein, poly­(N-vinylcarbazole) thin films embedded with TiO2 NPs were spin-coated on flexible substrate to investigate how the polymer/NP interface affects the resistive switching, in particular, under bending conditions. The switching properties were found to depend on the degree of bending as well as the concentration of NPs, with the former bringing a strong influence on carrier transport. Using quantum-chemical calculations and finite-element analyses, we demonstrate that the micro cracks at polymer/NPs interfaces act as blocking layers that hinder the charge trapping and detrapping processes. Our study may provide useful information for understanding the underlying physics of polymer nanocomposite memory devices for the application to future flexible electronics.