Nonvolatile infrared memory in MoS2 /PbS van der Waals heterostructures

Science Advances
Qisheng WangJun He

Abstract

Optoelectronic devices for information storage and processing are at the heart of optical communication technology due to their significant applications in optical recording and computing. The infrared radiations of 850, 1310, and 1550 nm with low energy dissipation in optical fibers are typical optical communication wavebands. However, optoelectronic devices that could convert and store the infrared data into electrical signals, thereby enabling optical data communications, have not yet been realized. We report an infrared memory device using MoS2/PbS van der Waals heterostructures, in which the infrared pulse intrigues a persistent resistance state that hardly relaxes within our experimental time scales (more than 104 s). The device fully retrieves the memory state even after powering off for 3 hours, indicating its potential for nonvolatile storage devices. Furthermore, the device presents a reconfigurable switch of 2000 stable cycles. Supported by a theoretical model with quantitative analysis, we propose that the optical memory and the electrical erasing phenomenon, respectively, originate from the localization of infrared-induced holes in PbS and gate voltage pulse-enhanced tunneling of electrons from MoS2 to PbS. The dem...Continue Reading

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Citations

Sep 27, 2018·Advanced Materials·Chao FanQinglin Zhang
Sep 27, 2018·Nanotechnology·Lejing PiTianyou Zhai
Dec 28, 2018·Advanced Materials·Minh Dao TranYoung Hee Lee
Mar 29, 2019·Advanced Materials·Yu ZhangJun He
Jan 25, 2020·Advanced Materials·Ting-Yu QuDong-Ming Sun
Sep 27, 2018·Advanced Science·Ziyu LvVellaisamy A L Roy
Apr 15, 2020·Science and Technology of Advanced Materials·Muhammad Muqeet RehmanNisar Ahmed
Nov 19, 2020·Advanced Materials·Taimur AhmedSumeet Walia
Jun 10, 2021·Advanced Materials·Lei YinJun He
Mar 24, 2020·Chemical Reviews·Ziyu LvSu-Ting Han
Jul 4, 2019·ACS Applied Materials & Interfaces·Sung Hyun KimKyung-Hwa Yoo
Mar 5, 2019·ACS Applied Materials & Interfaces·Eric SinghHari Singh Nalwa
Sep 16, 2021·ACS Applied Materials & Interfaces·Wei YanJames Bullock

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Methods Mentioned

BETA
electron diffraction
electron beam lithography
scanning
atomic force microscopy

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