In:
Advanced Science, Wiley, Vol. 7, No. 19 ( 2020-10)
Abstract:
Ferroelectric memories with ultralow‐power‐consumption are attracting a great deal of interest with the ever‐increasing demand for information storage in wearable electronics. However, sufficient scalability, semiconducting compatibility, and robust flexibility of the ferroelectric memories remain great challenges, e.g., owing to Pb‐containing materials, oxide electrode, and limited thermal stability. Here, high‐performance flexible nonvolatile memories based on ferroelectric Hf 0.5 Zr 0.5 O 2 (HZO) via quasi‐van der Waals heteroepitaxy are reported. The flexible ferroelectric HZO exhibits not only high remanent polarization up to 32.6 µC cm −2 without a wake‐up effect during cycling, but also remarkably robust mechanical properties, degradation‐free retention, and endurance performance under a series of bent deformations and cycling tests. Intriguingly, using HZO as a gate, flexible ferroelectric thin‐film transistors with a low operating voltage of ±3 V, high on/off ratio of 6.5 × 10 5 , and a small subthreshold slope of about 100 mV dec −1 , which outperform reported flexible ferroelectric transistors, are demonstrated. The results make ferroelectric HZO a promising candidate for the next‐generation of wearable, low‐power, and nonvolatile memories with manufacturability and scalability.
Type of Medium:
Online Resource
ISSN:
2198-3844
,
2198-3844
DOI:
10.1002/advs.202001266
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2808093-2