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Title: A monolithic artificial iconic memory based on highly stable perovskite-metal multilayers
Authors: Guan, Xinwei
Wang , Yutao
Lin, Chun-Ho
Hu, Long
Ge, Shuaipeng
Wan, Tao
Younis, Adnan
Li, Feng
Cui, Yimin
Qi, Dong-Chen
Chu, Dewei
Chen, Xiaodong
Wu, Tom
Keywords: Engineering::Materials
Issue Date: 2020
Source: Guan, X., Wang , Y., Lin, C., Hu, L., Ge, S., Wan, T., Younis, A., Li, F., Cui, Y., Qi, D., Chu, D., Chen, X. & Wu, T. (2020). A monolithic artificial iconic memory based on highly stable perovskite-metal multilayers. Applied Physics Reviews, 7(3), 031401-.
Journal: Applied Physics Reviews
Abstract: Artificial iconic memories, also called photomemories, are new types of nonvolatile memory that can simultaneously detect and store light information in a monolithic device. Several approaches have been proposed to construct artificial iconic memories, such as three-terminal field effect transistors, which can achieve an effective control of the gate voltage and external light terminals. The drawbacks in constructing these memories involve complicated fabrication processes, and the resulting performance of, for example, perovskite transistor-type photomemories is limited by the low carrier mobilities and poor ambient stabilities, whereas architectures based on floating gate modulations entail strict interface engineering and poor device reliability. In this paper, we propose a novel monolithic artificial iconic memory with a multilayer architecture of indium tin oxide/perovskite/gold/perovskite/silver, which combines the memory and photodetector functionalities of perovskites in an integrated device. The bottom perovskite layer plays the role of a photodetector, modulating the voltage bias on the top perovskite layer that serves as a resistive switching memory. This multilayer perovskite device can store photo-sensing data in its resistive states, with a memory retention of 5 × 103 s and ambient stability longer than sixty days. As a prototype demonstration, a 7 × 7 artificial iconic memory array is constructed to detect and store data on light intensity distribution, enabling a nonvolatile imaging functionality. Our work provides a new platform for designing perovskite-based architectures with simultaneous light detection and data storage capabilities.
ISSN: 1931-9401
DOI: 10.1063/5.0009713
Rights: © 2020 Author(s). All rights reserved. This paper was published by American Institute of Physics (AIP) in Applied Physics Reviews and is made available with permission of the Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
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