ZnO nanowires array p-n homojunction and its application as a visible-blind ultraviolet photodetector

Leung, Y. H.; He, Z. B.; Luo, L. B.; Tsang, C. H. A.; Wong, N. B.; Zhang, W. J.; Lee, S. T.
February 2010
Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p053102
Academic Journal
We demonstrated a simple and low-cost fabrication of ZnO p-n homojunction. The junction consists of n-type ZnO nanowires array by a hydrothermal method covered with p-type Al, N co-doped ZnO film by a sol-gel method. The junction exhibits good rectification characteristics, with reverse leakage current and rectification ratio of ∼5 μA and ∼150 at bias of 3 V, respectively. The junction is operated as a photodetector when light radiation is shined on the glass-side of the device. The photodetector shows a peak responsivity at 384 nm with UV-visible responsivity ratio (R384 nm/R550 nm) of ∼70 at an operating bias of -3 V.


Related Articles

  • Solid-phase diffusion mechanism for GaAs nanowire growth. Persson, Ann I.; Larsson, Magnus W.; Stenström, Stig; Ohlsson, B. Jonas; Samuelson, Lars; Wallenberg, L. Reine // Nature Materials;Oct2004, Vol. 3 Issue 10, p677 

    Controllable production of nanometre-sized structures is an important field of research, and synthesis of one-dimensional objects, such as nanowires, is a rapidly expanding area with numerous applications, for example, in electronics, photonics, biology and medicine. Nanoscale electronic devices...

  • Vapor–liquid–solid growth and narrow-band ultraviolet photoluminescence of well-aligned GeO2 nanowire arrays with controllable aspect ratios. Jie Yu; Heqing Yang; Ruyu Shi; Lihui Zhang; Hua Zhao; Xuewen Wang // Applied Physics A: Materials Science & Processing;Aug2010, Vol. 100 Issue 2, p493 

    GeO2 nanowire arrays have been fabricated by thermal evaporation of Ge powder in air via a vapor–liquid–solid mechanism with Au as a catalyst. The GeO2 nanowires are single crystalline with a hexagonal structure and have a controllable aspect ratio in the range of 23–167....

  • Nanowire active-matrix circuitry for low-voltage macroscale artificial skin. Takei, Kuniharu; Takahashi, Toshitake; Ho, Johnny C.; Ko, Hyunhyub; Gillies, Andrew G.; Leu, Paul W.; Fearing, Ronald S.; Javey, Ali // Nature Materials;Oct2010, Vol. 9 Issue 10, p821 

    Large-scale integration of high-performance electronic components on mechanically flexible substrates may enable new applications in electronics, sensing and energy. Over the past several years, tremendous progress in the printing and transfer of single-crystalline, inorganic micro- and...

  • Wide-bandgap Zn2GeO4 nanowire networks as efficient ultraviolet photodetectors with fast response and recovery time. Chaoyi Yan; Singh, Nandan; Pooi See Lee // Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p053108 

    Ultraviolet (UV) photodetectors based on ternary Zn2GeO4 nanowire (NW) networks are demonstrated. The devices show fast response and recovery time, which is attributed to the unique NW-NW junction barrier dominated conductance for network devices. The UV-light induced barrier height modulation...

  • Semiconductor nanowires: optics and optoelectronics. Agarwal, R.; Lieber, C. M. // Applied Physics A: Materials Science & Processing;Nov2006, Vol. 85 Issue 3, p209 

    Single crystalline semiconductor nanowires are being extensively investigated due to their unique electronic and optical properties and their potential use in novel electronic and photonic devices. The unique properties of nanowires arise owing to their anisotropic geometry, large surface to...

  • Terahertz time-domain measurement of non-Drude conductivity in silver nanowire thin films for transparent electrode applications. Kim, Jaeseok; Maeng, Inhee; Jung, Jongwook; Song, Hyunjoon; Son, Joo-Hiuk; Kim, Kilsuk; Lee, Jaeik; Kim, Chul-Hong; Chae, Geesung; Jun, Myungchul; Hwang, YongKee; Jeong Lee, Su; Myoung, Jae-Min; Choi, Hyunyong // Applied Physics Letters;1/7/2013, Vol. 102 Issue 1, p011109 

    We have investigated the complex conductivity of silver nanowire thin films using terahertz time-domain spectroscopy. Maxwell-Garnett effective medium theory, which accounts for the effective complex conductivity of silver nanowires, is presented in detail theoretically and experimentally. The...

  • Investigation of fluidic assembly of nanowires using a droplet inside microchannels. Salalha, Wael; Zussman, Eyal // Physics of Fluids;Jun2005, Vol. 17 Issue 6, p063301 

    Nanowires are common building blocks for the bottom-up assembly of electronic and photonic devices. A significant challenge is to introduce a single nanowire into an oriented assembly in order to express its unique anisotropic properties or to fabricate a nanodevice. In this work we focused on...

  • Extremely low drift of resistance and threshold voltage in amorphous phase change nanowire devices. Mitra, Mukut; Yeonwoong Jung; Gianola, Daniel S.; Agarwal, Ritesh // Applied Physics Letters;5/31/2010, Vol. 96 Issue 22, p222111 

    Time-dependent drift of resistance and threshold voltage in phase change memory (PCM) devices is of concern as it leads to data loss. Electrical drift in amorphous chalcogenides has been argued to be either due to electronic or stress relaxation mechanisms. Here we show that drift in amorphized...

  • Electronic delocalization and resonant transmission in symmetric metallic nanowires. Zhang, R. L.; Peng, R. W.; Cao, L. S.; Wang, Z.; Tang, Z. H.; Zhang, X. F.; Wang, Mu; Hu, A. // Applied Physics Letters;10/9/2006, Vol. 89 Issue 15, p153114 

    We report here the theoretical studies on electronic delocalization and resonant transmission in symmetric metallic nanowires (SMNs). Resonant transmissions, which are characterized by multiple perfect transmission peaks, have been found in the electronic band gap. The resonant energy and the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics