Hybrid polarity and carrier injection of gold and gadolinium oxide bi-nanocrystals structure
Journal
Applied Physics Letters
Journal Volume
102
Journal Issue
8
Pages
083507
Date Issued
2013
Author(s)
Wang, Jer-Chyi
Lin, Chih-Ting
Huang, Po-Wei
Lai, Chao-Sung
Chang, Li-Chun
Wu, Chih-I.
Abstract
In this study, the carrier injection mechanism of gold and gadolinium oxide bi-nanocrystals (BNCs) with hafnium dioxide NC separation layer was investigated. Further, an N-shaped carrier injection curve was observed under positive gate bias. It is resulted from the hybrid polarity and carrier injection. To identify the injection, the activation energies of charge loss were analyzed, and it was found that the substrate-injected electrons and gate-injected holes were stored in the BNCs. The gate-injected carriers were trapped at the Au-NCs and HfO2 interface, exhibiting high-density (>2.45 × 1012 cm−2) and high-speed (∼μs) operation characteristics suitable for future use in flash memories.
Type
journal article