Biomedical subjects

Deng-hui Xu

Publications and source records attributed to Deng-hui Xu.

3 recordsLinked to original sources

PubMed2005

[Electroluminescent device based on rare earth terbium complex].

Rare earth complex TbY(m-MBA)6 (phen)2.2H20 have been synthesized, which were used as emitting materials in electroluminescence. Single-layer devices and bilayer devices with Alq as electron transmission layer have been fabricated. The electroluminescent properties of the devices were studied. The electroluminescent mechanism of the devices was proposed by measuring and analyzing the emission and the excitation spectra of the emissive layer. Y3+ may play the role to promote the energy transfer from ligand to Tb3+ and the possible energy transfer process of the device was preliminarily discussed.

Electrochemical Techniques↗

PubMed2005

[Electroluminescent device based on terbium complex].

Rare earth complex Tb(BA)3phen has been synthesized, which is used as an emitting material in electroluminescence. The properties of monolayer device with the rate of 1000 r x min(-1) and the impure concentration of 1:5 are the best. And the highest brightness of this device reached 26.8 cd x cm(-2) at a fixed bias of 21 V. Bright green emission can be obtained from the optimized double-layer device and the highest EL brightness of the device reaches 322cd x m(-2) at the voltage of 22 V.

English Abstract↗

PubMed2004

[Emission mechanism in the Tb complex doped PVK system].

Excitation and photoluminescence (PL) spectra of the mixture terbium complex and PVK were investigated. The excitation spectrum of Tb complex dispersed PVK film is very similar to that of the pure PVK film, indicting that energy transfer occurs from PVK to Tb complex. For the overlap between the excitation spectrum of Tb complex dispersed PVK film and the PL spectrum of PVK film is very little, the ratio of occurrence for Förester energy transfer is very little. The emission of Tb3+ mainly comes from the excited ligand, which comes from the ligand capture of electron-hole pairs. In the electroluminescence (EL) spectra, the emission of PVK is completely restrained and only emission of Tb3+ is occured, which origins from the different mechanism in comparison with photoluminescence.

Europium↗