A heterostructure of MoS2/SnO2 has been fabricated. A SnO2 film was deposited by Sn sputtering followed by oxidation of a Sn film in the ambient. Later, a MoS2 film was deposited on SnO2 by pulsed laser deposition. The built-in electric potential generated at the SnO2/MoS2 interface facilitates self-powered broadband photodetection ranging from the ultraviolet-visible to near-infrared (NIR) wavelength. Under NIR illumination, the device exhibits excellent photoresponse with a responsivity of 0.35 A W−1 and a detectivity of 1.25 × 1011 Jones at 0 V. Moreover, the device shows faster response with rise/fall times as 153/200 ms. The excellent performance of the device is attributed to the high electron transport behavior of SnO2 and a built-in electric field at the interface.
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2 May 2022
Research Article|
May 03 2022
MoS2/SnO2 heterojunction-based self-powered photodetector
Special Collection:
Photodetectors Based on Van der Waals Heterostructures and Hybrid 2D Materials
Pius Augustine
;
Pius Augustine
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
2
Materials Research Laboratory, Sacred Heart College (Autonomous)
, Kochi 682013, India
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Kishan Lal Kumawat
;
Kishan Lal Kumawat
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
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Deependra Kumar Singh
;
Deependra Kumar Singh
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
3
Institute of Physics
, Bhubaneswar 751005, India
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Saluru Baba Krupanidhi
;
Saluru Baba Krupanidhi
a)
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
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Karuna Kar Nanda
Karuna Kar Nanda
a)
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
3
Institute of Physics
, Bhubaneswar 751005, India
4
Homi Bhabha National Institute
, Mumbai 400094, India
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Pius Augustine
1,2
Kishan Lal Kumawat
1
Deependra Kumar Singh
1,3
Saluru Baba Krupanidhi
1,a)
Karuna Kar Nanda
1,3,4,a)
1
Materials Research Centre, Indian Institute of Science
, Bangalore 560012, India
2
Materials Research Laboratory, Sacred Heart College (Autonomous)
, Kochi 682013, India
3
Institute of Physics
, Bhubaneswar 751005, India
4
Homi Bhabha National Institute
, Mumbai 400094, India
Note: This paper is part of the APL Special Collection on Photodetectors Based on Van der Waals Heterostructures and Hybrid 2D Materials.
Appl. Phys. Lett. 120, 181106 (2022)
Article history
Received:
February 08 2022
Accepted:
April 19 2022
Citation
Pius Augustine, Kishan Lal Kumawat, Deependra Kumar Singh, Saluru Baba Krupanidhi, Karuna Kar Nanda; MoS2/SnO2 heterojunction-based self-powered photodetector. Appl. Phys. Lett. 2 May 2022; 120 (18): 181106. https://doi.org/10.1063/5.0087652
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