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Articolul precedent |
Articolul urmator |
763 1 |
Ultima descărcare din IBN: 2018-08-02 08:56 |
Căutarea după subiecte similare conform CZU |
538.9 (350) |
Fizica materiei condensate. Fizica solidului (349) |
SM ISO690:2012 LUPAN, Oleg, PAUPORTE, Thierry, VIANA, Bruno, URSACHI, Veaceslav, TIGINYANU, Ion, SHONTYA, Viktor, CHOW, Lee. UV-Blue and green electroluminescence from Cu-doped ZnO nanorod emitters hydrothermally synthesized on p-GaN. In: Journal of Nanoelectronics and Optoelectronics, 2012, vol. 7, pp. 712-718. ISSN 1555-130X. DOI: https://doi.org/10.1166/jno.2012.1413 |
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Journal of Nanoelectronics and Optoelectronics | |
Volumul 7 / 2012 / ISSN 1555-130X | |
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DOI:https://doi.org/10.1166/jno.2012.1413 | |
CZU: 538.9 | |
Pag. 712-718 | |
Rezumat | |
Aqueous solution synthesis of ZnO nanorods on p-GaN(0001) is a low-temperature (< 100 °C) and cost-efficient growth technique of high quality emitters for LED applications. We present morphological, optical and structural properties of zinc oxide nanorod arrays grown by a hydrothermal seed layer-free and rapid synthesis (15 min) on p-GaN(0001). We found that the epitaxial layer possesses a close packed hexagonal nanorod morphology and lateral facets are oriented in the same direction for the various nanorods. The effect of Cu-doping on the optical and electroluminescence properties of Cu-ZnO nanorod arrays on GaN substrate is discussed in details. The UV/Blue and green (near-white) emissions were found in both photoluminescence and electroluminescence spectra indicating the possibility to use the synthesized Cu-ZnO/p-GaN hetero-structures in white LED applications. The emissions started at relatively low forward voltage of 4.9 V and the intensity of the emission increased with increasing the biasing voltage. We propose for further exploration an efficient, seed layer-free and low temperature hydrothermal synthesis technique to fabricate Cu-doped ZnO/p-GaN heterojunction light-emitting devices-LEDs. |
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Cuvinte-cheie Epitaxy, photoluminescence, ZnO |
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