Patterned growth of ZnO nanowalls by nanoparticle-assisted pulsed laser deposition

Nakamura, Daisuke; Shimogaki, Tetsuya; Nakao, Shihomi; Harada, K.; Muraoka, Yoichiro; Ikenoue, Hiroshi; Okada, Tatsuo

doi:10.1088/0022-3727/47/3/034014

Cited by 17 publications

(5 citation statements)

References 26 publications

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“…Several growth methods consisting of aqueous solution technique 10 , 13 , 15 , chemical vapor deposition 11 , 12 , vapor–liquid–solid process 14 , hydrothermal technique 16 – 19 , sputtering 20 , and pulsed laser deposition (PLD) 21 – 23 have been proposed to prepare ZnO nanostructures. Usually, ZnO-based nanostructures are prepared via aqueous solution technique, vapor–liquid–solid process, and hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, in comparison to magnetron sputtering or reactive RF sputtering, PLD has attracted much attention for growing ZnO-based thin films or nanostructures. As far as we know, a modified PLD technique that is the so-called nanoparticle assisted PLD (NAPLD) has been presented for the preparation of ZnO-based nanostructures 21 – 23 . Up to now, the PLD-prepared ZnO nanostructures are almost grown by NAPLD without using any catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Transformation from Film to Nanorod via a Sacrifical Layer: Pulsed Laser Deposition of ZnO for Enhancing Photodetector Performance

2017

Sci Rep

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A novel fabrication method for single crystalline ZnO nanorods by pulsed laser deposition (PLD) using a chemical-bath-deposited ZnS seed layer is proposed. For the substrate temperature (Ts) lower than 700 °C, the PLD-ZnO showed a polycrystalline phase and film-type morphology, resulting from the ZnS seed layer with a cubic phase. However, the ZnS film became a sacrifical layer and single crystalline ZnO(002) nanorods can be achieved at Ts of 900 °C, where ZnS was decomposed to zinc metals and sulfur fumes. The transformation from ZnO film to nanorod microstructure was demonstrated with the change of ZnS layer into Zn grains. Enhanced performance of the metal-semiconductor-metal photodetectors were fabricated with ZnO/ZnS samples grown at Ts of 500, 700, and 900 °C. The responsivities (@1 V and 370 nm) of these three devices were 1.71, 6.35, and 98.67 A/W, while their UV-to-visible discrimination ratios were 7.2, 16.5, and 439.1, respectively. Obviously, a higher light-capturing efficiency was obtained in the 900 °C-grown ZnO/ZnS device owing to its one-dimensional nanostructure with high crystal quality. The results indicate PLD combined with a sacrifical nanostructure is a promising method for obtaining high-quality ZnO nanorods, which paves the way for the fabrication of high performance ZnO-based devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transformation from Film to Nanorod via a Sacrifical Layer: Pulsed Laser Deposition of ZnO for Enhancing Photodetector Performance

2017

Sci Rep

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“…Therefore, ZnO is a promising semiconductor material in the field of ultraviolet (UV) light-emitting devices such as UV lightemitting diodes and UV laser diodes. In addition, ZnO nano= microstructures have attracted considerable attention because of their high crystalline quality and unique structures such as nanowires, 1,2) nanosheets, 3,4) nanorods, [5][6][7] nanowalls, [8][9][10][11] and microspheres. [12][13][14][15] For the development ZnO-based devices, p-type ZnO and n-type ZnO are necessary.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Sb-doped ZnO microspheres by pulsed laser ablation

Nagasaki

Shimogaki

Tanaka

et al. 2016

Jpn. J. Appl. Phys.

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We succeeded in synthesizing antimony (Sb)-doped zinc oxide (ZnO) microspheres by ablating a sintered ZnO target containing Sb in air. The structural properties of the microspheres were investigated by Raman scattering studies. The Zn–Sb related local vibrational mode (LVM) was detected around 238 cm−1. Room-temperature photoluminescence (PL) properties of the microspheres were investigated under cw and pulsed laser excitations, and ultraviolet (UV) emission and whispering-gallery-mode (WGM) lasing were observed from the microspheres. Furthermore, a p–n heterojunction was formed between a single Sb-doped ZnO microsphere and an n-Al-doped ZnO thin film, and a good rectifying property with a turn-on voltage of approximately 1.8 V was observed in the current–voltage (I–V) characteristics across the junction.

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“…ZnO nanowires have attracted a great deal of interest due to their importance in both scientific research and potential technological applications OE8; 9 . In our study, ZnO nanowires have been synthesized on sapphire substrates using nanoparticle assisted pulsed laser deposition (NAPLD) OE10;11 . Since it can be performed without a catalyst or etching process, it can be expected that more simple, low-cost and short-time fabrication is established.…”

Section: Introductionmentioning

confidence: 99%

Catalyst-free growth of ZnO nanowires on various-oriented sapphire substrates by pulsed-laser deposition

et al. 2016

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Catalyst-free growth of one-dimensional zinc oxide (ZnO) nanowires is reported. ZnO nanowires were synthesized on ZnO buffer layers deposited on various-oriented sapphire substrates. Syntheses of ZnO buffer layers and nanowires were performed by ultraviolet pulsed-laser deposition. ZnO nanowire's number density was the lowest in the case of using m-cut sapphire substrates. ZnO nanowires grown on a-cut sapphire substrates had vertical alignment with distances of tens to hundreds of nanometers. On the other hand, ZnO nanowires grown on c-cut sapphire substrates had the biggest nucleation rate. The dependence of crystalline orientation of ZnO buffer layers on the orientation of sapphire substrates were investigated by electron back scatter diffraction measurement. From their results, the growth models of ZnO buffer layers were suggested and the variations in morphological properties of ZnO nanowires were discussed.

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Patterned growth of ZnO nanowalls by nanoparticle-assisted pulsed laser deposition

Cited by 17 publications

References 26 publications

Transformation from Film to Nanorod via a Sacrifical Layer: Pulsed Laser Deposition of ZnO for Enhancing Photodetector Performance

Transformation from Film to Nanorod via a Sacrifical Layer: Pulsed Laser Deposition of ZnO for Enhancing Photodetector Performance

Synthesis and characterization of Sb-doped ZnO microspheres by pulsed laser ablation

Catalyst-free growth of ZnO nanowires on various-oriented sapphire substrates by pulsed-laser deposition

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