TY - JOUR
T1 - Photomemristors using carbon nanowall/diamond heterojunctions
AU - Ueda, Kenji
AU - Itou, Hideharu
AU - Asano, Hidefumi
N1 - Funding Information:
This work was supported in part by a JSPS KAKENHI (number 16H04348) and by research grants from the Toyoaki Foundation, Tatematsu Foundation, Murata Science Foundation, and the Research Foundation for Opto-Science and Technology.
Publisher Copyright:
Copyright © Materials Research Society 2019.
PY - 2019/2/28
Y1 - 2019/2/28
N2 - This work demonstrates the in situ growth of carbon nanowalls (CNWs) on diamond semiconductors by microwave plasma-assisted chemical vapor deposition. The resulting CNW/diamond junctions behave as photomemristors having both photocontrollable multiple resistance states and nonvolatile memory functions. The resistance state (high or low resistance) can be selected by irradiation with blue or violet light in conjunction with the application of a bias voltage, giving a large resistance switching ratio of ∼10 6 . The photoinduced resistance switching behaviors are rarely observed and has only been observed in a few materials and/or heterostructures. These junctions also exhibit a photoresponsivity of ∼12 A/W, which is much larger than that obtained from photodiodes composed of other materials. These results suggest that CNW/diamond (i.e., carbon sp 2 /sp 3 ) junctions could have applications in novel photocontrollable devices, which have photosensing, memory, and switching functions.
AB - This work demonstrates the in situ growth of carbon nanowalls (CNWs) on diamond semiconductors by microwave plasma-assisted chemical vapor deposition. The resulting CNW/diamond junctions behave as photomemristors having both photocontrollable multiple resistance states and nonvolatile memory functions. The resistance state (high or low resistance) can be selected by irradiation with blue or violet light in conjunction with the application of a bias voltage, giving a large resistance switching ratio of ∼10 6 . The photoinduced resistance switching behaviors are rarely observed and has only been observed in a few materials and/or heterostructures. These junctions also exhibit a photoresponsivity of ∼12 A/W, which is much larger than that obtained from photodiodes composed of other materials. These results suggest that CNW/diamond (i.e., carbon sp 2 /sp 3 ) junctions could have applications in novel photocontrollable devices, which have photosensing, memory, and switching functions.
KW - chemical vapor deposition (CVD) (deposition)
KW - photoconductivity
KW - sdiamond
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U2 - 10.1557/jmr.2018.498
DO - 10.1557/jmr.2018.498
M3 - Article
AN - SCOPUS:85061238387
SN - 0884-2914
VL - 34
SP - 626
EP - 633
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 4
ER -