ZnO Nanoribbon Microcavity Lasers

Yan, Haoquan; Johnson, Justin C.; Law, Matt; He, Rongrui; Knutsen, Kelly P.; Mckinney, Juan R.; Pham, Johnny D.; Saykally, Richard J.; Yang, Peidong

doi:10.1002/adma.200305490

Cited by 224 publications

(182 citation statements)

References 20 publications

Supporting

Mentioning

178

Contrasting

Order By: Relevance

“…1) which was inserted into the glass tube after applying a small amount of vacuum grease. The bottom end of this glass tube was connected to a vacuum flask through a thin rubber pipe and stop cock (2). The inset of Fig.…”

Section: Synthesis Of Ordered Zno Nanowire Arraysmentioning

confidence: 99%

“…The vacuum flask in the set-up not only prevents the solution from entering the vacuum pump but also prevents air from entering the glass tube. Further, the solution level inside the glass tube can also be easily controlled with the help of a stop cock (2). After attaining the desired vacuum (3-4 × 10 −2 torr) in the system, stopcock (1) in Fig.…”

Section: Synthesis Of Ordered Zno Nanowire Arraysmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10] Recently, many research groups have extensively investigated the various properties of metal oxide nanostructures with different dimensions (D) and they observed that only few of these metal oxide possess either d 0 (TiO 2 , WO 3 electronic configuration of cations exhibit feasible gas sensing properties. 11 Although there exist a few metal oxides with a d n (0 < n < 10) configuration of cations (NiO, VO 2 , Cr 2 O 3 , RuO 2 etc.)…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Probing the highly efficient room temperature ammonia gas sensing properties of a luminescent ZnO nanowire array prepared via an AAO-assisted template route

et al. 2014

View full text Add to dashboard Cite

Here, we report the facile synthesis of a highly ordered luminescent ZnO nanowire array using a low temperature anodic aluminium oxide (AAO) template route which can be economically produced in large scale quantity. The as-synthesized nanowires have diameters ranging from 60 to 70 nm and length ∼11 µm. The photoluminescence spectrum reveals that the AAO/ZnO assembly has a strong green emission peak at 490 nm upon excitation at a wavelength of 406 nm. Furthermore, the ZnO nanowire array-based gas sensor has been fabricated by a simple micromechanical technique and its NH 3 gas sensing properties have been explored thoroughly. The fabricated gas sensor exhibits excellent sensitivity and fast response to NH 3 gas at room temperature. Moreover, for 50 ppm NH 3 concentration, the observed value of sensitivity is around 68%, while the response and recovery times are 28 and 29 seconds, respectively. The present synthesis technique to produce a highly ordered ZnO nanowire array and a fabricated gas sensor has great potential to push the low cost gas sensing nanotechnology.

show abstract

Section: Synthesis Of Ordered Zno Nanowire Arraysmentioning

confidence: 99%

Section: Synthesis Of Ordered Zno Nanowire Arraysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Probing the highly efficient room temperature ammonia gas sensing properties of a luminescent ZnO nanowire array prepared via an AAO-assisted template route

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This geometrical arrangement enables the optical characterization of single vertical nanocavities by using a focused beamspot smaller than the distance between adjacent nanowires, as well as high-resolution photoluminescence imaging by UVlaser scanning confocal microscopy Lasing has been observed in ZnO structures including micropillars, nanowires, and nanorods. 3,[7][8][9][10][11] Investigation of the lasing characteristics of high density ZnO nanowire arrays has shown that high quality single-crystalline ZnO nanowires constitute ideal lasing nanocavities, which provide both a gain medium and a resonant cavity due to reflection at the planar endfacets. 12,13 Lasing emission of a single nanowire placed horizontally on a substrate was first demonstrated in 2001 and subsequent work has developed a further understanding of the lasing mechanism in ZnO nanostructures.…”

mentioning

confidence: 99%

Imaging Single ZnO Vertical Nanowire Laser Cavities Using UV-laser Scanning Confocal Microscopy

2009

View full text Add to dashboard Cite

“…The similar phenomenon was also observed in ZnO nanoribbon microcavity. 15 In addition, we can estimate the mode quality ͑Q͒ factor with different nanowires at 4.2 K, which is defined as the ratio of the mode wavelength to the width. 16 In Fig.…”

mentioning

confidence: 99%

Characterization of Fabry-Pérot microcavity modes in GaAs nanowires fabricated by selective-area metal organic vapor phase epitaxy

Hua¹,

Motohisa²,

Ding³

et al. 2007

Applied Physics Letters

View full text Add to dashboard Cite

The authors present the formation of Fabry-Pérot cavity in single GaAs nanowire prepared by selective-area metal organic vapor phase epitaxy. The grown nanowires with hexagonal cross section are highly uniform and vertically oriented. Microphotoluminescence measurements of single GaAs nanowire exhibit periodic peaks in the intensity, which are suggestive of the longitudinal modes of a Fabry-Pérot cavity. The cavity is formed along the length of the nanowire and the ͑111͒ facets of both ends act as reflecting mirrors. Additionally, optical waveguides in GaAs nanowires were also observed. © 2007 American Institute of Physics. ͓DOI: 10.1063/1.2787895͔ Semiconductor nanowires have been attracting great interests because they are potentially used as building blocks in nanoelectronics and photonics. [1][2][3][4] Recently, semiconductor nanolasers working in ultraviolet region based on ZnO ͑Ref. 3͒ and CdS͑Ref. 4͒ single nanowires were reported. These applications require that the fabricated nanowires should be uniform and flat enough to form Fabry-Pérot cavities. We recently proposed and demonstrated an alternative method of preparing semiconductor nanowires by using selective-area metal organic vapor phase epitaxy ͑SA-MOVPE͒. 5-8 Compared to the conventional vapor-liquid-solid growth, 9,10 this is a catalyst-free approach and only relies on the thermal decomposition of source materials. Furthermore, since this method fully utilizes the nature of epitaxial growth, it is expected to exhibit superior crystalline quality as well as good controllability of the growth with atomic precision to form abrupt doping profiles and heterojunctions, including vertical and lateral heterostructures. [6][7][8] In this letter, we fabricated GaAs nanowires with uniform and smooth surfaces by SA-MOVPE. Microphotoluminescence ͑ PL͒ measurements reveal the formation of Fabry-Pérot cavity modes in individual GaAs nanowires, caused by the refractive index difference between the wire and the surrounding. Thus, GaAs nanowires may be candidate materials for achieving stimulated emission or lasing, especially in near-infrared region.SA-MOVPE growth of GaAs nanowires started with the deposition of 30 nm SiO 2 layer by plasma sputtering on ͑111͒B GaAs substrate. Then SiO 2 was partially removed by electron beam lithography and wet chemical etching. The mask pattern of SiO 2 had circular opening and they were arranged in a triangular lattice. The diameter of the grown nanowires was directly related to that of the opening holes. In addition, we controlled the nanowire length by adjusting the opening pitch and growth condition. Finally, the patterned substrates were loaded into a horizontal low-pressure MOVPE system working at 0.1 atm using trimethylgallium ͑TMG͒ and arsine ͑AsH 3 ͒ as source materials. Typical partial pressures were 9.6ϫ 10 −7 and 2.5ϫ 10 −4 atm for TMG and AsH 3 , respectively. The growth temperature and growth time for GaAs nanowires were 750°C and 60 min. Typical freestanding GaAs nanowires grown on ͑111͒B GaAs substrate by MOVPE...

show abstract

ZnO Nanoribbon Microcavity Lasers

Cited by 224 publications

References 20 publications

Probing the highly efficient room temperature ammonia gas sensing properties of a luminescent ZnO nanowire array prepared via an AAO-assisted template route

Probing the highly efficient room temperature ammonia gas sensing properties of a luminescent ZnO nanowire array prepared via an AAO-assisted template route

Imaging Single ZnO Vertical Nanowire Laser Cavities Using UV-laser Scanning Confocal Microscopy

Characterization of Fabry-Pérot microcavity modes in GaAs nanowires fabricated by selective-area metal organic vapor phase epitaxy

Contact Info

Product

Resources

About