High performance graphene-like thinly layered graphite based visible light photodetector
- 24 Downloads
In this work, the drop casting method is utilized to obtain a thin graphene-like graphite layer as a photodetection layer on a SiO2/Si substrate, and its performance is characterized to determine its potential use in commercial applications. The thin layer is formed by first synthesizing graphite soot from a butane flame before being turned into a liquid solution and drop-casted onto the substrate to form a thin graphene-like graphite film. Field emission scanning electron microscope and Raman vibrational mode analyses indicate that the fabricated graphene-like graphite layer has characteristics similar to the graphene. The graphene-like graphite photodetector demonstrates a narrow photoresponse from 530 to 680 nm, covering visible sources from green to red. The responsivity and external quantum efficiency of the device under the illumination of red laser 660 nm is found to be around 148 mA W−1 and 27.8% respectively and is faster than that reported for similar systems using graphene and reduced graphene oxide previously. A fast response time of 83.7 and 28 µs at a modulation frequency of 1.0 and 10000 Hz respectively from the graphene-like thinly layered graphite photodetector shows potential application for the development of low-cost carbon-based photodetectors in near future.
KeywordsResponsivity Photodetector Graphite Butane flame Frequency modulation
Funding for this work was provided for by the Ministry of Higher Education, Malaysia under the Grants LRGS (2015) NGOD/UM/KPT and GA 010 – 2014 (ULUNG) as well as the University of Malaya under the Grants RU 013 – 2018 and HiCoE Phase II Funding.
- Ahmad, H., Thandavan, T.: Characterization of graphene oxide/silicon dioxide/p-type silicon heterojunction photodetector towards infrared 974 nm illumination. Opt. Quantum Electron. 49(12), 395 (2017a)Google Scholar
- Echtermeyer, T.J., Nene, P., Trushin, M., Gorbachev, R.V., Eiden, A.L., Milana, S., Sun, Z., Schliemann, J., Lidorikis, E., Novoselov, K.S.: Photothermoelectric and photoelectric contributions to light detection in metal–graphene–metal photodetectors. Nano Lett. 14(7), 3733–3742 (2014)ADSCrossRefGoogle Scholar
- Ghahari, F., Xie, H.-Y., Taniguchi, T., Watanabe, K., Foster, M.S., Kim, P.: Enhanced thermoelectric power in graphene: violation of the Mott relation by inelastic scattering. Phys. Rev. Lett. 116(13), 136802 (2016)Google Scholar
- Hishiyama, Y., Irumano, H., Kaburagi, Y., Soneda, Y.: Structure, Raman scattering, and transport properties of boron-doped graphite. Phys. Rev. B 63(24), 245406 (2001)Google Scholar
- Morozov, S., Novoselov, K., Katsnelson, M., Schedin, F., Elias, D., Jaszczak, J.A., Geim, A.: Giant intrinsic carrier mobilities in graphene and its bilayer. Phys. Rev. Lett. 100(1), 016602 (2008)Google Scholar
- Thandavan, T.M.K., Gani, S.M.A., Wong, C.S., Nor, R.M.: Enhanced photoluminescence and Raman properties of Al-doped ZnO nanostructures prepared using thermal chemical vapor deposition of methanol assisted with heated brass. PLoS ONE 10(3), e0121756 (2015). https://doi.org/10.1371/journal.pone.0121756 CrossRefGoogle Scholar