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. 2021 Mar 11;8(11):2003864. doi: 10.1002/advs.202003864

Figure 11.

Figure 11

Hybrid graphene/Zn‐based nanoparticle photodetectors. a) Schematic of the hybrid ZnO QD/rGO photodetector and the in situ measurement setup. Reproduced with permission.[ 101 ] Copyright 2012, Royal Society of Chemistry. b) Photoresponse transients of ZnS and ZnS/rGO photodetectors under on/off UV light irradiation. Reproduced with permission.[ 111 ] Copyright 2009, American Chemical Society. c) Photocurrent response of ZnO, Zn0.94Mg0.06O NPs, and Zn0.94Mg0.06O/rGO nanocomposites under a xenon lamp. Reproduced with permission.[ 113 ] Copyright 2016, Elsevier Ltd. d) rGO/C‐doped ZnO NW photodetector. i) SEM image of the C‐doped ZnO/rGO hybrid nanocomposites. ii) Current–voltage characteristics of the device under different illumination conditions. Reproduced with permission.[ 114 ] Copyright 2014, Royal Society of Chemistry. e) Background‐subtracted photocurrent transients of pure rGO, ZnO QD/rGO hybrid and the ZnO nanorod/rGO hybrid photodetectors at 1.084 mW cm−2 370 nm radiation with bias of 5 V. Inset: an enlarged view of the exact starting point when light is on. Reproduced with permission.[ 115 ] Copyright 2011, Royal Society of Chemistry. f) ZnO nanoparticle–rGO core–shell photodetector. i) Schematic of the fabrication process for ZnO NP/rGO core–shell structures. ii) Schematic of the rGO/ZnO NP core–shell UV photodetector. Reproduced with permission.[ 117 ] Copyright 2013, Royal Society of Chemistry. g) GQD/ZnO NR photodetector. i) Energy band diagram of the GQD/ZnO NR composite and its carrier transport mechanism at the interfacial region under UV irradiation. ii) Photocurrent transients of bare ZnO and nGQD/ZnO NR photodetectors under UV irradiation. Reproduced with permission.[ 134 ] Copyright 2017, Elsevier Ltd.