Electroluminescent devices based on rare-earth tetrakis β-diketonate complexes

Quirino, Welber G.; Legnani, Cristiano; Santos, R. M. B.; Teixeira, K.C.; Cremona, M.; Guedes, M.A.; Brito, Hermi F.

doi:10.1016/j.tsf.2008.06.012

Cited by 38 publications

(17 citation statements)

References 25 publications

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“…Quirino and co‐workers synthesized a series of complexes Tb‐6 (Scheme ) with four β‐diketonate ligands coordinated to Tb 3+ and a counter alkali metal cation (M + = Li + , Na + , or K + ) to maintain the electric neutrality . The electroluminescence properties of this type complexes were tested by constructing double‐layer OLEDs, and pure green emission from Tb 3+ was observed by all three complexes based devices.…”

Section: Visible Light Emission Lanthanide Complexesmentioning

confidence: 99%

Review on the Electroluminescence Study of Lanthanide Complexes

Wang

Zhao

Chen

et al. 2019

Advanced Optical Materials

136

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Section: Visible Light Emission Lanthanide Complexesmentioning

confidence: 99%

Review on the Electroluminescence Study of Lanthanide Complexes

Wang

Zhao

Chen

et al. 2019

Advanced Optical Materials

136

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“…e reduction of AgNO 3 is probably due to electron transfer from carboxyl/hydroxyl groups of cochineal to Ag + resulting in stable AgNPs. e energy gap and ionization potential of the biosynthesis of AgNPs from cochineal were estimated with optical and electrochemical techniques [31]. Based on these values, the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels could be determined (Table 4).…”

Section: Cyclic Voltammetry Characterizationmentioning

confidence: 99%

Improvement of Cochineal Extract (Dactylopius coccus Costa) Properties Based on the Green Synthesis of Silver Nanoparticles for Application in Organic Devices

Stael

Parra-Cruz

Naranjo

et al. 2018

Journal of Nanotechnology

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e UV-Vis absorption and conductivity properties of the organic sample cochineal (Dactylopius coccus Costa) were modified by using it as a reducing agent in the biosynthesis of silver nanoparticles. is was done in a straightforward way in order to allow its possible application in organic devices. e biosynthesized solution exhibited a hybrid material with a UV-Vis absorbance range from 205 to 650 nm. e sizes of silver nanoparticles of the hybrid material were between 5 and 10 nm. X-ray diffraction (XRD) revealed silver structures, when samples were dried at 100°C. At 40°C, the structures detected were chlorargyrite (AgCl) and silver oxide (Ag 2 O). e nucleation and subsequent growth of the hybrid thin film on the substrates indicated an increase of clusters and roughness in comparison to thin films made solely from cochineal. e thin films of hybrid materials showed an improvement of 40% in their electrical potential. e stability at room temperature demonstrated that the hybrid material could be useful as a potential candidate for photoactive thin films in organic devices.

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“…The rareearth ␤-diketonate complexes not only display a high luminescent efficiency but also are suitable to be thermally deposited. For this reason, as a way to obtain pure red OLED devices and to use triplet excited states, OLEDs based on tetrakis ␤-diketonate RE complexes as electron transport and emitting layer were developed [16,17].…”

Section: Introductionmentioning

confidence: 99%