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Article: Cathodoluminescent characteristics of green-emitting ZnAl2O4:Mn thin-film phosphors
Title | Cathodoluminescent characteristics of green-emitting ZnAl2O4:Mn thin-film phosphors |
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Authors | |
Issue Date | 2005 |
Publisher | Springer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htm |
Citation | Applied Physics A: materials science & processing, 2005, v. 80 n. 1, p. 151-154 How to Cite? |
Abstract | Thin films of ZnAl2O4:Mn were grown on aluminosilicate ceramic plates using spray pyrolysis of aqueous solutions. The cathodoluminescence (CL) properties of the films under low to medium excitation voltage (<5 kV) were investigated. The films exhibited green CL after being annealed at temperatures above 550 °C, which corresponds to the transition between 4T1 and 6A1 of Mn2+ ions located in the tetra coordination of the Zn2+ site in the spinel structure. The chromaticity coordinates were x=0.150 and y=0.734 with a dominant wavelength of 525 nm and an 82% color purity. The CL luminance and efficiency depended on the excitation voltage and current density. Saturation effects were observed as the current density increased. A luminance of 540 cd/m2 and an efficiency of 4.5 lm/W were obtained at an excitation voltage of 4 kV with a current density of 38 μ A/cm2. |
Persistent Identifier | http://hdl.handle.net/10722/225948 |
ISSN | 2023 Impact Factor: 2.5 2023 SCImago Journal Rankings: 0.446 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lou, Z | - |
dc.contributor.author | Hao, J | - |
dc.date.accessioned | 2016-05-31T04:01:04Z | - |
dc.date.available | 2016-05-31T04:01:04Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | Applied Physics A: materials science & processing, 2005, v. 80 n. 1, p. 151-154 | - |
dc.identifier.issn | 0947-8396 | - |
dc.identifier.uri | http://hdl.handle.net/10722/225948 | - |
dc.description.abstract | Thin films of ZnAl2O4:Mn were grown on aluminosilicate ceramic plates using spray pyrolysis of aqueous solutions. The cathodoluminescence (CL) properties of the films under low to medium excitation voltage (<5 kV) were investigated. The films exhibited green CL after being annealed at temperatures above 550 °C, which corresponds to the transition between 4T1 and 6A1 of Mn2+ ions located in the tetra coordination of the Zn2+ site in the spinel structure. The chromaticity coordinates were x=0.150 and y=0.734 with a dominant wavelength of 525 nm and an 82% color purity. The CL luminance and efficiency depended on the excitation voltage and current density. Saturation effects were observed as the current density increased. A luminance of 540 cd/m2 and an efficiency of 4.5 lm/W were obtained at an excitation voltage of 4 kV with a current density of 38 μ A/cm2. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htm | - |
dc.relation.ispartof | Applied Physics A: materials science & processing | - |
dc.rights | The final publication is available at Springer via http://dx.doi.org/[insert DOI] | - |
dc.title | Cathodoluminescent characteristics of green-emitting ZnAl2O4:Mn thin-film phosphors | - |
dc.type | Article | - |
dc.identifier.email | Hao, J: jhhao@hku.hk | - |
dc.identifier.doi | 10.1007/s00339-003-2211-8 | - |
dc.identifier.scopus | eid_2-s2.0-10644260434 | - |
dc.identifier.hkuros | 97441 | - |
dc.identifier.volume | 80 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 151 | - |
dc.identifier.epage | 154 | - |
dc.identifier.isi | WOS:000225184300031 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 0947-8396 | - |