Photo- and low-voltage cathodoluminescence in lithium zinc gallate blue and green thin-film phosphors

Autor:	Philip D. Rack, Michael D. Potter, John D. Budai, Yong Eui Lee, Jeffrey J. Peterson, David P. Norton
Rok vydání:	2002
Předmět:	Field emission display Materials science Photoluminescence business.industry General Physics and Astronomy chemistry.chemical_element Cathodoluminescence Phosphor Epitaxy chemistry Optoelectronics Lithium Thin film business Single crystal
Zdroj:	Journal of Applied Physics. 91:2974-2977
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1448863
Popis:	The photo- and cathodoluminescence properties of epitaxial lithium-doped zinc gallate thin-film phosphors grown on (100) MgO single crystal substrates using pulsed laser ablation were investigated. The addition of lithium to both undoped and Mn-doped ZnGa2O4 films significantly enhanced the photo- and low-voltage cathodoluminescent intensity. Cathodoluminescent efficiencies for as-deposited undoped and Mn-doped lithium zinc gallate films as high as 0.21 lm/W and 0.29 lm/W, respectively, were achieved for 1 kV and 2.26 μA/cm2. Based on these results, lithium-doped zinc gallate thin-film phosphors appear to be attractive for applications in low-voltage field emission display devices.
Databáze:	OpenAIRE
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