Abstract
We report the optoelectronic behavior of a novel reduced graphene oxide (rGO)/ZnO structure which has been realized by photocatalytic reduction of chemically exfoliated GO sheets. Lateral ZnO nanowires, which are grown between interdigital electrodes by a novel plasma-assisted procedure, are utilized as the photocatalyst metal oxide in the presented heterostructure. Raman spectroscopy and FTIR analyses are utilized to show that photocatalytic reduction of GO sheets, with few (less than 5) layers, occurs after about 30 min of UV-illumination. Low-temperature electrical characterizations are applied to demonstrate one-dimensional behavior of the realized rGO ribbons, with an estimated width of around 30 nm. The optoelectronic characteristics of the fabricated rGO/ZnO hybrid structure also lead to high responsivity of about 12 A/W and a sensitivity of about 5 × 104− % (at the bias voltage of −5 V), which entitles the fabricated structure as an efficient photodetector. All in all, our experimental results open up a promising simple approach to fabricate GNR-based devices by assisting lateral ZnO nanowire, without involving nanolithography issues.
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References
Akhavan O (2010) Graphene nanomesh by ZnO nanorod photocatalysts. ACS Nano 4:4174–4180
Akhavan O (2011) Photocatalytic reduction of graphene oxides hybridized by ZnO nanoparticles in ethanol. Carbon 49:11
Akhavan O, Abdolahad M, Esfandiar M, Mohatashamifar M (2010) Photodegradation of graphene oxide sheets by TiO2 nanoparticles after a photocatalytic reduction. J Phys Chem C 114:12955–12959
Ban FY, Majid SR, Huang NM, Lim HN (2012) Graphene oxide and its electrochemical performance. Int J Electrochem Sci 7:4345–4351
Choi EY, Han TH, Hong J, Kim JE, Lee SH, Kimaand HW, Kim SO (2010) Noncovalent functionalization of graphene with end-functional polymers. J Mater Chem 20:1907–1912
Darbari S, Ahmadi V, Afzali P, Abdi Y (2013) Photocatalytic reduction of GO/ZnO to achieve GNRs for optoelectronic applications. J Phys D 46:385101
Ferrari AC, Robertson J (2000) Interpretation of Raman spectra of disordered and amorphous carbon. Phys Rev B 61:14095–14107
Ferrari AC, Meyer JC, Scardaci V, Casiraghi C, Lazzeri M, Mauri F, Piscanec S, Jiang D, Novoselov KS, Roth S, Geim AK (2006) The Raman fingerprint of graphene. Phys Rev Lett 97:187401
Graf D (2007) Spatially resolved Raman spectroscopy of single- and few-layer graphene. Nano Lett 7:238–242
Han MY, Ozyilmaz B, Zhang Y, Kim P (2007) Energy band-gap engineering of graphene nanoribbons. Phys Rev Lett 98:206805
Hummers WOR (1958) Preparation of graphite oxide. J Am Chem Soc 80:1339
Jiao L, Zhang L, Wang X, Diankov G, Dai H (2009) Narrow graphene nanoribbons from carbon nanotubes. Nature 458:877
Konstantatos G, Badioli M, Gaudreau L, Osmond J, Bernechea M, Arquer FPG, Gatti F, Koppens FHL (2012) Hybrid graphene–quantum dot phototransistors with ultrahigh gain. Nat Nanotechnol 7:363
Li D, Muller MB, Gilje S, Kaner RB, Wallace GG (2008) Processable aqueous dispersions of graphene nanosheets. Nat Nanotechnol 3(2):101–105
Lin YM, Perebeinos V, Chen Z, Avouris P (2008) Electrical observation of subband formation in graphene nanoribbons. Phys Rev B 78:161409
Lv R, Terrones M (2012) Towards new graphene materials: doped graphene sheets and nanoribbons. Mater Lett 78:209–218
Mueller T, Xia F, Avouris P (2010) Graphene photodetectors for high-speed optical communications. Nat Photonics 4:297
Naebe M, Wang J, Amini A, Khayyam H, Hameed N, Li LH, Chen Y, Fox B (2014) Mechanical property and structure of covalent functionalized graphene/epoxy nanocomposites. Sci Rep 4:4375
Schmidt W (2001) Hydrazine and its derivatives, preparation, properties, applications, 2nd edn. Wiley, New York
Sheetz RM, Ponomareva I, Richter E, Andriotis AN, Menon M (2009) Defect-induced optical absorption in the visible range in ZnO nanowires. Phys Rev B 80:195314
Tuinstra F, Koenig JL (1970) Raman spectrum of graphite. J Chem Phys 53:1126–1130
Wei Z, Wang D, Kim S, Kim SY, Hu Y, Yakes MK, Laracuente AR, Dai Z, Marder SR, Berger C, King WP, Heer WA, Sheehan PE, Riedo E (2010) Nanoscale tunable reduction of graphene oxide for graphene electronics. Science 328:1373
Xia F, Mueller T, Lin Y, Valdes-Garcia A, Avouris P (2009) Ultrafast graphene photodetector. Nat Nanotechnol 4:839
Zhang L, Diao S, Nie Y, Yan K, Liu N, Dai B, Xie Q, Reina A, Kong J, Liu Z (2011) Photocatalytic patterning and modification of graphene. J Am Chem Soc 133:2706
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Darbari, S., Ahmadi, V., Afzali, P. et al. Reduced graphene oxide/ZnO hybrid structure for high-performance photodetection. J Nanopart Res 16, 2798 (2014). https://doi.org/10.1007/s11051-014-2798-z
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DOI: https://doi.org/10.1007/s11051-014-2798-z