Graphite/n-InSe photosensitive junctions fabricated by transferring dry drawn graphite film onto as-cleaved surface of InSe

Kovalyuk, M.Z. and Savitskii, P.I. and Tovarnitskii, M.V. and Литвин, Оксана Степанівна (2020) Graphite/n-InSe photosensitive junctions fabricated by transferring dry drawn graphite film onto as-cleaved surface of InSe Functional Materials, 27 (3). pp. 473-481. ISSN 1027-5495

Text M_Kovalyuk_P_Savitskii_M_Tovarnitskii_O_Lytvyn_FM_2020_FITU.pdf - Published Version Download (1MB)

Abstract

We report on reproducible fabrication and characterization of new photosensitive Schottky-type junctions prepared by an extremely simple technique when a substrate-free dry drawn graphite film is transferred from water surface onto as-cleaved van der Waals surface (0001) of n-lnSe substrate. Electrical and photoelectric characterization of the obtained junctions is investigated using current-voltage, capacitance-voltage and photosensitivity spectra measurements. It is revealed that the thin graphite film transferred onto the n-lnSe (0001) substrate creates a Schottky junction with a potential barrier of 0.49 eV and rectification ratio of RR ~ 200 at 0.9 V. An abrupt rectifying electrical junction graphite/n-lnSe is formed due to van der Waals attraction forces between the thin graphite film and atomically smooth n-lnSe (0001) surface. The graphite/n-lnSe junctions generated short-circuit current density of Jsc = 0.29 mA/cm2, open-circuit voltage of Voc = 0.31 V and filling factor of FF = 0.33 under 80 mW/cm2 white light illumination. The junctions exhibit photosensitivity in the near-infrared and visible spectral ranges, making them promising for photodetector applications. Their energy band diagram is built up.

Item Type:	Article
Uncontrolled Keywords:	heterojunction; indium selenide; photosensitivity
Subjects:	Статті у наукометричних базах > Scopus Статті у наукометричних базах > Web of Science
Divisions:	Це архівні підрозділи > Кафедра комп'ютерних наук і математики
Depositing User:	Оксана Степанівна Литвин
Date Deposited:	27 Jul 2021 08:08
Last Modified:	27 Jul 2021 08:08
URI:	https://elibrary.kubg.edu.ua/id/eprint/36917

Actions (login required)

View Item