Electrical bistable properties of hybrid device based on SiO2 modified-ZnO nanoparticles embedded in poly-4-vinyl-phenol

Autor: Jiang Lifang, Qingliang Shi, Xueliang Wang, Yuan Hong, Xu Jianping, Yanyu Wu, Lan Li, Youwei Wang
Rok vydání: 2014
Předmět:
Zdroj: Physics Letters A. 378:3544-3548
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2014.09.053
Popis: An electrical bistable device was fabricated by using SiO2 modified-ZnO nanoparticles (NPs) embedded in poly-vinyl-phenol (PVP) polymer as the charge storage medium. Compared to the reference devices with PVP or ZnO NPs embedded in PVP, the proposed device showed improved reproducible electrical bistability. The time maintenance for On/Off states reached 10 4 s , revealing the better environmental stability. The carrier transport mechanism was interpreted by the space-charge-limited-current (SCLC), thermionic emission (TE) and ohmic conduction models. The charge trapping and de-trapping process of ZnO NPs were described based on the energy-band diagram of the device.
Databáze: OpenAIRE