|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5431499||1508821||2018||7 صفحه PDF||سفارش دهید||دانلود کنید|
With the motivation of realizing the high performance graphene-based nonvolatile memory devices, we fabricate and characterize reliable and robust ferroelectric field-effect transistor (FFETs), which are composed of single-layer graphene (SLG) and lead-zirconate-titanate (PZT). After completing all of the fabrication steps, the samples are annealed in vacuum to improve the device characteristics. Through systematic analyses, we investigate an optimal vacuum-annealing condition for improving the memory characteristics of the device. At annealing temperatures at 250-300Â Â°C, both the electrical conduction properties of the SLG channel and the capacitive-coupling abilities of the SLG/PZT/Pt stack are dramatically improved because of the elimination of chemical residues and/or molecular oxygens. Consequently, the vacuum-annealed SLG-PZT FFET displays a great improvement of data retention (â¼72% after 10 year) and a large memory window (â¼4.1Â V). We believe the present study can provide alternative avenues for exploring unprecedented graphene-based memory structures.
Journal: Carbon - Volume 126, January 2018, Pages 176-182