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2026-09-29T19:15:49Z
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Lead-Free FA<sub>3</sub>BiI<sub>6</sub> Perovskite
Memristor for Logic Gate Circuits and Data Encryption
Xuyang Ren (5768162)
Tuo Zhao (556009)
Ciman Chai (25138708)
Kai Hu (311882)
Yuchan Wang (1618198)
Biophysics
Space Science
Genetics
Neuroscience
Biotechnology
Chemical Sciences not elsewhere classified
Ecology
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Mental Health
sup >+</ sup
rgb color images
original image features
mechanistic analysis reveals
logic gate circuits
heavy metal toxicity
200 dc cycles
pulse tests demonstrate
lossless symmetric encryption
epsc ), paired
6 </ sub
3 </ sub
pulse facilitation
ppf ),
data encryption
xor operations
work provides
term potentiation
switching voltages
switching behavior
structured memristor
retention time
resistance states
practical application
perovskite memristor
new approach
negligible degradation
ltd ).
free fa
excellent uniformity
driven ag
completely masked
The heavy metal toxicity of lead-based halide perovskites
hinders
their practical application in memristors. Herein, we report a lead-free
FA<sub>3</sub>BiI<sub>6</sub>-based sandwich-structured memristor.
The device exhibits stable bipolar resistive switching with negligible
degradation over 200 DC cycles and a retention time of 3000 s, and
excellent uniformity in switching voltages and resistance states.
Mechanistic analysis reveals that electric-field-driven Ag<sup>+</sup> migration, inducing local conductive filaments, is the key to the
resistive-switching behavior. Pulse tests demonstrate that the device
can mimic various biological synaptic plasticity, including excitatory
postsynaptic current (EPSC), paired-pulse facilitation (PPF), and
long-term potentiation/depression (LTP/LTD). Furthermore, OR, AND,
and XOR basic logic gate circuits are constructed, with XOR operations
being employed for lossless symmetric encryption/decryption of RGB
color images, and the original image features being completely masked.
This work provides a new approach for the development of environmentally
friendly halide perovskite-based hardware encryption devices.
2026-09-29T00:00:00Z
Text
Journal contribution
10.1021/acs.jpcc.6c05402.s001
https://figshare.com/articles/journal_contribution/Lead-Free_FA_sub_3_sub_BiI_sub_6_sub_Perovskite_Memristor_for_Logic_Gate_Circuits_and_Data_Encryption/34027435
CC BY-NC 4.0