Laser Light From a Handful of Dust

Hellemans, Alexander

doi:10.1126/science.284.5411.24b

Cited by 24 publications

(10 citation statements)

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“…ZnO has attracted much attention as a luminescence material in various applications such as vacuum fluorescent displays (VFD), field emission displays (FED), , electroluminescent displays (ELD), and UV-light-emitting diodes and laser diodes − due to its wide gap of 3.37 eV at room temperature. The use of ZnO has also been explored in gas sensors, varistors, piezoelectric devices, electroacoustic transducers, and highly transparent conducting windows for solar cells and displays. , ZnO micropatterns are prepared for devices by an etching process using photoresist and lithography techniques.…”

Section: Introductionmentioning

confidence: 99%

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

Masuda

Kinoshita

Sato

et al. 2005

Crystal Growth & Design

128

139

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Site-selective deposition of UV- and visible-light-emitting ZnO crystals was successfully achieved in an aqueous solution at low temperature. Molecular recognition was effectively utilized for patterning of ZnO crystals on self-assembled monolayers. Crystalline ZnO was further controlled to have different morphologies such as cylindrical hexagonal rods, ellipses, or multineedle shapes by changing the solution conditions to improve the photoluminescence properties. All of the morphologies emitted strong photoluminescence in UV and visible regions with different emission spectra. The novel process shows the high potential of solution processes for fabricating nano/microdevices constructed from crystalline materials for visible-light-emitting devices.

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Section: Introductionmentioning

confidence: 99%

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

Masuda

Kinoshita

Sato

et al. 2005

Crystal Growth & Design

128

139

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“…3 Due to its wide gap of 3.37 eV at room temperature, ZnO is attracting considerable attention as one of the important candidates for potential applications such as UV light-emitting diodes and laser diodes. [4][5][6] By alloying with MgO, the band gap of the ternary alloys Mg x Zn 1-x O could be expanded from 3.3 to 4.20 eV. [7][8][9][10] This alloy produced a brighter UV luminescence at room temperature that was found to be excitonic in nature.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, it is useful for various applications such as vacuum fluorescent display (VFD), field emission display (FED), and electroluminescent display (ELD) . Due to its wide gap of 3.37 eV at room temperature, ZnO is attracting considerable attention as one of the important candidates for potential applications such as UV light-emitting diodes and laser diodes. − By alloying with MgO, the band gap of the ternary alloys Mg x Zn 1 - x O could be expanded from 3.3 to 4.20 eV. − This alloy produced a brighter UV luminescence at room temperature that was found to be excitonic in nature . These recent developments open up enormous interest in this materials system.…”

Section: Introductionmentioning

confidence: 99%

A New Luminescent Phenomenon of ZnO Due to the Precipitate Trapping Effect of MgO

Zhang

Wang

2004

Chem. Mater.

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A new luminescent phenomenon was found in the ZnO-MgO system. After Zn 1-x Mg x O (x < 0.15) pellets were sintered in an open crucible below 1600 °C or in a sealed crucible below 1300 °C, they emitted green lights upon excitation of ultraviolet (UV) lights and there was no persistent luminescence (afterglow) after the excitation light was cut off. After Zn 1-x Mg x O (0.02 e x < 0.15) pellets were sintered in a sealed crucible above 1300 °C, they emitted bright orange lights induced by UV excitation and showed a long orange afterglow, which persisted for about 10 min in the darkness after the removal of irradiating light. A precipitate trapping effect of MgO on ZnO luminescence was found, which resulted in the long orange afterglow. This report may shed more light on the luminescent mechanism of ZnO and supply useful information for understanding the luminescent properties of the ZnO-MgO system intensively.

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“…ZnO with a wide band gap of about 3.3 eV and a large excitonic binding energy of about 60 meV at room temperature has drawn much attention as a luminescence material in various fields such as electroluminescent displays (ELDs), field emission displays (FEDs), , vacuum fluorescent displays (VFDs), and laser diodes. − In addition, ZnO is also one of the most important nanomaterials for sensors, transistors, , nanopiezotronics, , electroacoustic transducers, and highly transparent conducting windows for solar cells . For light-emitting device applications, it is important to control and enlarge the palette of the colors emitted by ZnO .…”

Section: Introductionmentioning

confidence: 99%

Use of Additives in the Electrodeposition of Nanostructured Eu³⁺/ZnO Films for Photoluminescent Devices

Dawa

et al. 2009

Langmuir

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Rare-earth ion-doped ZnO has been the focus of numerous investigations because of its unique optical properties and promising applications in optoelectronic devices. Here we presented a facile electrochemical deposition route for the controllable preparation of Eu3+/ZnO nanostructures on a large scale. The prepared Eu3+/ZnO deposits were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, selected area electron diffraction, and X-ray photoelectron spectroscopy. Herein, the growth mechanisms of Eu3+/ZnO nanosheets and nanorods were discussed. The formation process of Eu3+/ZnO foam-like nanostructures is illuminated in this paper. The room temperature photoluminescence properties of the Eu3+/ZnO foam-like nanostructures were investigated. The sharp 4f-4f transition emissions of Eu3+ can be directly observed at 593, 617, and 698 nm. An energy transfer between ZnO and Eu3+ is shown to occur under UV excitation.

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Laser Light From a Handful of Dust

Cited by 24 publications

References 0 publications

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

A New Luminescent Phenomenon of ZnO Due to the Precipitate Trapping Effect of MgO

Use of Additives in the Electrodeposition of Nanostructured Eu³⁺/ZnO Films for Photoluminescent Devices

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Laser Light From a Handful of Dust

Cited by 24 publications

References 0 publications

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

Site-Selective Deposition and Morphology Control of UV- and Visible-Light-Emitting ZnO Crystals

A New Luminescent Phenomenon of ZnO Due to the Precipitate Trapping Effect of MgO

Use of Additives in the Electrodeposition of Nanostructured Eu3+/ZnO Films for Photoluminescent Devices

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Use of Additives in the Electrodeposition of Nanostructured Eu³⁺/ZnO Films for Photoluminescent Devices