The photodetector is a key component in optoelectronic integrated circuits.Although there are various device structures and mechanisms,the output current changes either from rectified to fully-on or from fully-off to fully-on after illumination.A device that changes the output current from fully-off to rectified should be possible.We report the first photon-controlled diode based on a n/n-molybdenum disulfide junction.Schottky junctions formed at the cathode and anode either prevent or allow the device to be rectifying,so that the output current of the device changes from fully-off to rectified.By increasing the thickness of the photogating layer,the behavior of the device changes from a photodetector to a multifunctional photomemory with the highest non-volatile responsivity of 4.8×107 A/W and the longest retention time of 6.5 x 106 s reported so far.Furthermore,a 3×3 photomemory array without selectors shows no crosstalk between adjacent devices and has optical signal-processing functions including wavelength and power-density selectivity.

Shun Feng;Ruyue Han;Lili Zhang;Chi Liu;Bo Li;Honglei Zhu;Qianbing Zhu;Wei Chen;Hui-Ming Cheng;Dong-Ming Sun

Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Physical Science and Technology,ShanghaiTech University,Shanghai 200031,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China

国家科学评论（英文版）

[1]Shun Feng;Ruyue Han;Lili Zhang;Chi Liu;Bo Li;Honglei Zhu;Qianbing Zhu;Wei Chen;Hui-Ming Cheng;Dong-Ming Sun-.A photon-controlled diode with a new signal-processing behavior)[J].国家科学评论（英文版）,2022(08):101-108

photomemory,selectors

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