Highly Dense ZnO Nanowires Grown on Graphene Foam for Ultraviolet Photodetection.

Growth of highly dense ZnO nanowires (ZnO NWs) is demonstrated on three-dimensional graphene foam (GF) using resistive thermal evaporation technique. Photoresponse of the as-grown hybrid structure of ZnO NWs on GF (ZnO NWs/GF) is evaluated for ultraviolet (UV) detection. Excellent photoresponse with fast response and recovery times of 9.5 and 38 s with external quantum efficiency of 2490.8% is demonstrated at low illumination power density of 1.3 mW/cm(2). In addition, due to excellent charge carrier transport, mobility of graphene reduces the recombination rate of photogenerated charge carriers, hence the lifetime of photogenerated free charge carriers enhances in the photodetectors.

[1]  Yongjun Zhang,et al.  Photoluminescence and Raman analysis of ZnO nanowires deposited on Si(100) via vapor-liquid-solid process , 2008 .

[2]  Abha Misra,et al.  Highly compressible behavior of polymer mediated three-dimensional network of graphene foam , 2014 .

[3]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

[4]  S. Ahn,et al.  Origin of the slow photoresponse in an individual sol-gel synthesized ZnO nanowire , 2007 .

[5]  Jinsheng Zheng,et al.  Schottky or Ohmic metal-semiconductor contact: influence on photocatalytic efficiency of Ag/ZnO and Pt/ZnO model systems. , 2014, ChemSusChem.

[6]  A. Ng,et al.  ZnO nanostructures for optoelectronics: Material properties and device applications , 2010 .

[7]  Rong Zhang,et al.  Raman and photoluminescence of ZnO films deposited on Si (111) using low-pressure metalorganic chemical vapor deposition , 2003 .

[8]  Peidong Yang,et al.  Nanowire ultraviolet photodetectors and optical switches , 2002 .

[9]  Shih-Yuan Lu,et al.  Vapor-solid growth of Sn nanowires: growth mechanism and superconductivity. , 2005, The journal of physical chemistry. B.

[10]  K. Loh,et al.  La2S3 thin films from metal organic chemical vapor deposition of single-source precursor , 2006 .

[11]  Andrea Ferrari.  Graphene Photonics and Optoelectronics , 2016 .

[12]  S. Ruan,et al.  Electrospun ZnO Nanofibers‐Based Ultraviolet Detector with High Responsivity , 2013 .

[13]  Saumitra Das,et al.  Interplay between NS3 protease and human La protein regulates translation-replication switch of Hepatitis C virus , 2011, Scientific reports.

[14]  Jun Xu,et al.  Graphene/ZnO nanowire/graphene vertical structure based fast-response ultraviolet photodetector , 2012 .

[15]  Ahmad Umar,et al.  Zinc oxide nanonail based chemical sensor for hydrazine detection. , 2008, Chemical communications.

[16]  J. Wu,et al.  Ultrahigh responsivity and external quantum efficiency of an ultraviolet-light photodetector based on a single VO₂ microwire. , 2014, ACS applied materials & interfaces.

[17]  Zhong Lin Wang.  Zinc oxide nanostructures: growth, properties and applications , 2004 .

[18]  Wei Huang,et al.  Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications , 2012 .

[19]  Ruyan Guo,et al.  ZnO microtube ultraviolet detectors , 2008 .

[20]  Hui-Ming Cheng,et al.  High Sensitivity Gas Detection Using a Macroscopic Three-Dimensional Graphene Foam Network , 2011, Scientific reports.

[21]  Chao Zhang,et al.  Low‐Cost Fully Transparent Ultraviolet Photodetectors Based on Electrospun ZnO‐SnO2 Heterojunction Nanofibers , 2013, Advanced materials.

[22]  Giuseppe Iannaccone,et al.  Electronics based on two-dimensional materials. , 2014, Nature nanotechnology.

[23]  Nitin Kumar,et al.  Ultrasensitive DNA sequence detection using nanoscale ZnO sensor arrays , 2006 .

[24]  Min Chen,et al.  Stacking‐Order‐Dependent Optoelectronic Properties of Bilayer Nanofilm Photodetectors Made From Hollow ZnS and ZnO Microspheres , 2012, Advanced materials.

[25]  Heon-Jin Choi,et al.  Controlled growth of ZnO nanowires and their optical properties , 2002 .

[26]  P. Avouris,et al.  Photodetectors based on graphene, other two-dimensional materials and hybrid systems. , 2014, Nature nanotechnology.

[27]  M. Aono,et al.  Giant Improvement of the Performance of ZnO Nanowire Photodetectors by Au Nanoparticles , 2010 .

[28]  Chao Xie,et al.  Monolayer graphene film on ZnO nanorod array for high-performance Schottky junction ultraviolet photodetectors. , 2013, Small.

[29]  Y. Takahashi,et al.  Photoconductivity of Ultrathin Zinc Oxide Films , 1994 .

[30]  M. Lazzeri,et al.  Current-voltage characteristics of graphene devices: Interplay between Zener-Klein tunneling and defects , 2010, 1003.2072.

[31]  Ming-Yen Lu,et al.  Direct Growth of Aligned Zinc Oxide Nanorods on Paper Substrates for Low‐Cost Flexible Electronics , 2010, Advanced materials.

[32]  SUPARNA DUTTASINHA,et al.  Graphene: Status and Prospects , 2009, Science.

[33]  L. Guo,et al.  Rapid anisotropic photoconductive response of ZnO-coated aligned carbon nanotube sheets. , 2014, ACS applied materials & interfaces.

[34]  A. Ferrari,et al.  Graphene Photonics and Optoelectroncs , 2010, CLEO 2012.

[35]  C. Hierold,et al.  Spatially resolved Raman spectroscopy of single- and few-layer graphene. , 2006, Nano letters.

[36]  Z. Fan,et al.  Zinc oxide nanostructures: synthesis and properties. , 2005, Journal of nanoscience and nanotechnology.

[37]  M. Aono,et al.  Electrical properties of individual ZnO nanowires , 2009, Nanotechnology.

[38]  L. Vandersypen,et al.  Zero-bias conductance peak and Josephson effect in graphene-NbTiN junctions , 2012, 1202.4774.

[39]  D. Basak,et al.  Photoluminescence and photoconductivity of ZnS-coated ZnO nanowires. , 2010, ACS applied materials & interfaces.