Different interactions between a metal electrode and an organic layer and their different electrical bistability performances

A new p–π conjugated small molecule, 2-[(pyridin-4-ylmethylene)-amino]-6-( N ′-pyridin-4-ylmethylene-hydrazino)-benzo[ de ]isoquinoline-1,3-dione ( 2PyNI ), was synthesized, characterized and fabricated into memory devices. The device ITO/ 2PyNI /Au ( 1 ) showed volatile memory effect, whereas the d...

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Bibliographic Details
Published in:RSC advances 2015, Vol.5 (10), p.7083-7089
Main Authors: Ma, Yong, Gu, Pei-Yang, Zhou, Feng, Dong, Hui-Long, Li, You-Yong, Xu, Qing-Feng, Lu, Jian-Mei, Ma, Wan-Li
Format: Article
Language:English
Subjects:
Aluminum
Bistability
Data storage
Devices
Electric potential
Electrodes
Memory devices
Voltage
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Summary:A new p–π conjugated small molecule, 2-[(pyridin-4-ylmethylene)-amino]-6-( N ′-pyridin-4-ylmethylene-hydrazino)-benzo[ de ]isoquinoline-1,3-dione ( 2PyNI ), was synthesized, characterized and fabricated into memory devices. The device ITO/ 2PyNI /Au ( 1 ) showed volatile memory effect, whereas the device ITO/ 2PyNI /Al ( 2 ) showed write once read many times (WORM) effect. According to theoretical calculations, 2PyNI had different interactions with Au and Al, which produced the different memory behaviors of devices 1 and 2 , respectively. In addition, the I – V characteristics of devices 1 and 2 were analyzed in detail with various conduction models. The temperature dependence of the current for the ON state of devices 1 and 2 were measured. Under the irradiation of the UV light (365 nm), device 1 could be switched on automatically when the voltage was fixed at −3.0 V and switched off as the bias was removed.
ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA12893A