Premium
Covalent Functionalization of Black Phosphorus with Conjugated Polymer for Information Storage
Author(s) -
Cao Yaming,
Tian Xiangyu,
Gu Junwei,
Liu Bo,
Zhang Bin,
Song Sannian,
Fan Fei,
Chen Yu
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201712675
Subject(s) - surface modification , conjugated system , covalent bond , polymer , black phosphorus , phosphorus , polymer science , chemistry , materials science , polymer chemistry , nanotechnology , organic chemistry , chemical engineering , engineering , optoelectronics
Major disadvantages of black phosphorus (BP) are its poor air‐stability and poor solubility in common organic solvents. The best way to solve this problem is to incorporate BP into a polymer backbone or a polymer matrix to form novel functional materials that can provide both challenges and opportunities for new innovation in optoelectronic and photonic applications. As a proof‐of concept application, we synthesized in situ the first highly soluble conjugated polymer‐covalently functionalized BP derivative (PDDF‐ g ‐BP) which was used to fabricate a resistive random access memory (RRAM) device with a configuration of Au/PDDF‐ g ‐BP/ITO. In contrast to PDDF without memory effect, PDDF‐ g ‐BP‐based device exhibits a nonvolatile rewritable memory performance, with a turn‐on and turn‐off voltages of +1.95 V and −2.34 V, and an ON/OFF current ratio of 10 4 . The current through the device in both the ON and OFF states is still kept unchanged even at 200th switching cycle. The PDDF/BP blends show a very unstable memory performance with a very small ON/OFF current ratio.