Abstract
Photodetectors based on a hybrid structure of graphene sensitized with lead selenide (PbSe) colloidal quantum dots (QDs) effective in the near-infrared (NIR) region with high responsivity were investigated. Colloidal PbSe nanocrystals were synthesized via a hot injection method. The bandgap of the synthesized nanocrystals was determined to be 0.68 eV by measuring their optical absorbance spectrum. Photodetectors based on PbSe QDs were investigated to examine their functionality. These devices were characterized by measuring the current-voltage curves in the dark and light and the spectral response spectrum. A photodetector was fabricated using a multilayer mechanically exfoliated graphene on a Si/SiO2 substrate with a PbSe QDs layer on top. A responsivity and detectivity of 1265A/W and 3.4 *1010cm.Hz0.5/W respectively were calculated based on current-voltage measurements.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. H. Warner et al., Graphene Fundamentals and emergent applications, vol. 17. Elsevier Science, 2013.
C. N. R. Rao and A. K. Sood, Eds., Graphene Synthesis, Properties, and Phenomena. John Wiley & Sons, Incorporated, 2013, pp. 19, 49.
X. Zhang, B. R. S. Rajaraman, H. Liu, and S. Ramakrishna, “Graphene’s potential in materials science and engineering,” RSC Adv., vol. 4, no. 55, pp. 28987–29011, 2014.
F. Bonaccorso, Z. Sun, T. Hasan, and A. C. Ferrari, “Graphene photonics and optoelectronics,” Nat. Photonics, vol. 4, no. 9, pp. 611–622, 2010.
F. H. L. Koppens et al., “Photodetectors based on graphene, other two-dimensional materials and hybrid systems,” Nat. Nanotechnol., vol. 9, no. 10, pp. 780–793, 2014.
T. Mueller, F. Xia, and P. Avouris, “Graphene photodetectors for high-speed optical communications,” Nat. Photonics, vol. 4, no. 5, pp. 297–301, 2010.
F. Xia et al., “Ultrafast graphene photodetector,” Nat. Nanotechnol., vol. 4, no. 12, pp. 839–843, 2009.
K. F. Mak et al., “Measurement of the Optical Conductivity of Graphene,” Phys. Rev. Lett., vol. 101, no. 17, pp. 1–9, 2008.
A. De Iacovo et al., “PbS Colloidal Quantum Dot Photodetectors operating in the near infrared,” Nat. Sci., pp. 1–9, 2016.
D. V. Talapin et al., “Prospects of Colloidal Nanocrystals for Electronic and Optoelectronic Applications,” Chem. Rev., vol. 110, no. 1, pp. 389–458, 2010.
G. Konstantatos et al., “Hybrid grapheneĝquantum dot phototransistors with ultrahigh gain,” Nat. Nanotechnol., vol. 7, no. 6, pp. 363–368, 2012.
D. H. Shin and S. H. Choi, “Graphene-based semiconductor heterostructures for photodetectors,” Micromachines, vol. 9, no. 7, 2018.
J. Li, L. Niu, Z. Zheng, and F. Yan, “Photosensitive graphene transistors,” Adv. Mater., vol. 26, no. 31, pp. 5239–5273, 2014.
W. Guo et al., “Oxygen-assisted charge transfer between ZnO quantum dots and graphene,” Small, vol. 9, no. 18, pp. 3031–3036, 2013.
A. A. Bessonov et al., “Compound Quantum Dot-Perovskite Optical Absorbers on Graphene Enhancing Short-Wave Infrared Photodetection,” ACS Nano, vol. 11, no. 6, pp. 5547–5557, 2017.
N. Cho et al., “Efficient photodetection at IR wavelengths by incorporation of PbSe-carbon-nanotube conjugates in a polymeric nanocomposite,” Adv. Mater., vol. 19, no. 2, pp. 232–236, 2007.
W. Ahmad et al., “Lead Selenide (PbSe) Colloidal Quantum Dot Solar Cells with >10% Efficiency,” Adv. Mater., vol. 31, no. 33, pp. 1–9, 2019.
M. Law et al., “Structural, optical, and electrical properties of PbSe nanocrystal solids treated thermally or with simple amines,” J. Am. Chem. Soc., vol. 130, no. 18, pp. 5974–5985, 2008.
W. W. Yu, J. C. Falkner, B. S. Shih, and V. L. Colvin, “Preparation and characterization of monodisperse PbSe semiconductor nanocrystals in a noncoordinating solvent,” Chem. Mater., vol. 16, no. 17, pp. 3318–3322, 2004.
H. Bukowska et al., “Raman spectra of graphene exfoliated on insulating crystalline substrates,” New J. Phys., vol. 13, 2011.
A. C. Ferrari et al., “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett., vol. 97, no. 18, pp. 1–4, 2006.
J.-M. Liu, Photonic devices. Cambridge, 2005, pp. 935–944.
F. Luo et al., “High responsivity graphene photodetectors from visible to near-infrared by photogating effect,” AIP Adv., vol. 8, no. 11, pp. 1–9, 2018.
L. Turyanska et al. “Ligand-Induced Control of Photoconductive Gain and Doping in a Hybrid Graphene–Quantum Dot Transistor,” Adv. Electron. Mater., vol. 1, no. 7, pp. 1–5, 2015.
M. H. Zarghami et al., “P-type PbSe and PbS quantum dot solids prepared with short-chain acids and diacids,” ACS Nano, vol. 4, no. 4, pp. 2475–2485, 2010.
A. Martinez, K. Fuse, and S. Yamashita, “Mechanical exfoliation of graphene for the passive mode-locking of fiber lasers,” Appl. Phys. Lett., vol. 99, no. 12, pp. 2009–2012, 2011.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gebril, W., Salman, H. & Manasreh, M.O. Near-Infrared Photodetectors Based on Hybrid Graphene-Colloidal PbSe Quantum Dots. MRS Advances 5, 2273–2280 (2020). https://doi.org/10.1557/adv.2020.256
Published:
Issue Date:
DOI: https://doi.org/10.1557/adv.2020.256