1. Enhanced stability of guanidinium-based organic-inorganic hybrid lead triiodides in resistance switching.
- Author
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Kim, Younghoon, Bae, Changdeuck, Jung, Hyun Suk, and Shin, Hyunjung
- Subjects
COMPUTER storage devices ,DATA warehousing ,METHYLAMMONIUM ,BISTABLE devices ,HYDROGEN bonding ,LOW voltage systems ,LEAD - Abstract
We describe guanidinium-based organic-inorganic hybrid lead triiodides (GAPbI
3 ) as an active layer in resistive switching structures and compare the switching results to those of the conventional compound, MAPbI3 . Both the GAPbI3 - and MAPbI3 -based ReRAM devices showed bistable switching characteristics with a low operating voltage (<0.25 V) and high on/off ratio (∼106 ). Remarkably, we found that the GAPbI3 -based devices exhibited prolonged switching behaviors for over 40 days under ambient conditions (MAPbI3 , only 4 days). The GAPbI3 devices lasted for a larger number of cycles (>1900) in an endurance test and exhibited a longer data storage time (>3 × 104 s) in a retention test. Our results suggest that GAPbI3 has stronger hydrogen bonding in the lattice and thus the potential for application in memory devices. [ABSTRACT FROM AUTHOR]- Published
- 2019
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