Journal
CHEM
Volume 7, Issue 5, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2021.01.021
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Funding
- Beijing National Laboratory for Molecular Sciences [BNLMS-CXTD-202001]
- Ministry of Science and Technology of China [2016YFA0200100, 2018YFA0703502]
- National Natural Science Foundation of China [52021006, 51720105003, 21790052, 51802220, 21974004]
- Natural Science Foundation of Tianjin City [19JCYBJC17300]
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A new strategy for preparing GDY film was proposed, leading to the successful fabrication of a GDY optoelectronic memory with multi-bit storage capability, showing excellent charge storage and photoresponse. The device exhibits over 256 distinct storage levels, with signal-to-noise ratios greater than 100, and demonstrates robust bending stability.
Two-dimensional (2D) graphdiyne (GDY) is a promising floating-gate material for flexible optoelectronic flash memory owing to its fascinating electrical and optical properties. However, research in GDY-based flash memory is still in its infancy owing to the huge challenge in the synthesis of large-area and ultrathin GDY films with high quality and uniformity. Here, an electric double-layer-confined strategy is proposed to synthesize a wafer-scale GDY film with thickness of 1 nm. Then, a two-terminal top-floating-gated optoelectronic memory with multibit storage capability is investigated using GDY as a photoresponsive top-floating gate. Benefiting from the excellent charge storage capability and high photoresponse of GDY, this device exhibits over 256 distinct storage levels (8 bits) with signal-to-noise ratios larger than 100. Moreover, the fully 2D material and two-terminal architecture endows the device with robust bending stability for over 1,000 bending circles, paving the way to develop wearable electronics.
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