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Date: 2007
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/47434
Description: Intra-shell transitions of transition metal and rare earth ions are parity forbidden processes. For Mn²⁺ ions this is also a spin forbidden process, i.e., light emission should be inefficient. Surpris ... More
Reviewed: Reviewed
Date: 2006
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/17606
Description: Nanoparticles made of lanthanide oxides are promising fluoropores for applications as new tags in biochemistry because of their large Stokes shift, sharp emission spectra, long lifetime and lack of ph ... More
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Reviewed: Reviewed
Date: 2006
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/18919
Description: Fluorescence labelling has become a technique of increasing importance in modern biotechnology which is increasingly underpinned by advances in materials science. In this paper we describe our contrib ... More
Reviewed: Reviewed
Date: 2006
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/47441
Description: We report the observation of efficient fluorescence upconversion in Sm-doped Gd₂O₃ nanopowders prepared by the spray pyrolysis method. The blue upconversion emission was observed with low-power contin ... More
Reviewed: Reviewed
Date: 2005
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/30713
Description: We demonstrate coexistence of slow and fast components of photoluminescence decay of the Mn²⁺ intra-shell emission in nanoparticles of CdMnS. We explain the observed decrease in PL lifetime of the Mn² ... More
Reviewed: Reviewed
Date: 2005
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/30698
Description: In this work we evaluate structural and optical properties of ZnO nanoparticles grown by wet chemistry method. Light emission properties of these nanoparticles are studied with cathodoluminescence and ... More
Reviewed: Reviewed
Date: 2005
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/30718
Description: Effects of n-type doping of GaN epilayers and InGaN/GaN quantum well structures are studied. We evaluate the influence of n-type doping on a structural quality of the samples (using atomic force and s ... More
Reviewed: Reviewed
Date: 2005
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/30708
Description: Bulk samples, layers, quantum well, and quantum dot structures of II-Mn-VI samples all show coexistence of slow and fast components of Mn²⁺ photoluminescence decay. Thus, fast photoluminescence decay ... More
Reviewed: Reviewed
Date: 2004
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1141801
Description: A comprehensive study of the morphological, optical and microstructural properties of mass-transport (MT) and conventionally grown GaN by hydride vapour-phase epitaxy is presented. Spatially resolved ... More
Reviewed: Reviewed
Date: 2004
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1245128
Description: 5 page(s)
Reviewed: Reviewed
Date: 2004
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1141639
Description: We demonstrate a correlation between the microstructure of epilayers and the diffusion length of free carriers and excitons in heteroepitaxial and homoepitaxial GaN films. We show that the diffusion l ... More
Reviewed: Reviewed
Date: 2004
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1245293
Description: 5 page(s)
Reviewed: Reviewed
Date: 2003
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/27100
Description: ZnO layers have been grown by atomic layer epitaxy using a gas flow version of the technique. ZnO films have been obtained from either a double exchange chemical reaction, a single exchange reaction, ... More
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Reviewed: Reviewed
Date: 2002
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/26719
Description: Polycrystalline GaN has been grown by remote plasma enhanced laser induced chemical vapour deposition on soda lime glass substrates using ZnO buffer layer. The high compliance of the ZnO has allowed r ... More
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Reviewed: Reviewed