TY - JOUR
T1 - Novel erbium(iii) fluorinated β-diketonate complexes with N,N-donors for optoelectronics: From synthesis to solution-processed devices
AU - Martín-Ramos, Pablo
AU - Silva, Manuela Ramos
AU - Coya, Carmen
AU - Zaldo, Carlos
AU - Álvarez, Ángel Luis
AU - Álvarez-García, Susana
AU - Matos Beja, Ana M.
AU - Martín-Gil, Jesús
PY - 2013/4/21
Y1 - 2013/4/21
N2 - Three novel ternary Er3+ complexes emitting in the C band transmission window for fiber optic communications have been synthesised and their structures have been elucidated by single crystal X-ray diffraction. The fluorinated β-diketonate ligand, 1,1,1-trifluoro-5,5-dimethyl-2,4- hexanedione, combines a good absorption cross-section in the ultraviolet region with reduction of non-radiative quenching of the Er3+ emission, while the rigidity and bulkiness of the three different N,N-donors (2,2′-bipyridine, bathophenanthroline and 5-nitro-1,10-phenanthroline) have a pronounced impact on the emission intensity of luminescence. Furthermore, the choice of the ancillary ligand also determines the efficiency of the antenna effect, leading to complete quenching of the ligand-associated visible emission for the optimized complex with 5-nitro-1,10-phenanthroline. Solution processed 1.54 μm organic light-emitting diodes have been manufactured and characterized for this complex, confirming the aforementioned complete resonant energy transfer from the ligands to the Er3+ ion. The features of the reported device fabrication show a simple way to obtain large area NIR-OLEDs. © 2013 The Royal Society of Chemistry.
AB - Three novel ternary Er3+ complexes emitting in the C band transmission window for fiber optic communications have been synthesised and their structures have been elucidated by single crystal X-ray diffraction. The fluorinated β-diketonate ligand, 1,1,1-trifluoro-5,5-dimethyl-2,4- hexanedione, combines a good absorption cross-section in the ultraviolet region with reduction of non-radiative quenching of the Er3+ emission, while the rigidity and bulkiness of the three different N,N-donors (2,2′-bipyridine, bathophenanthroline and 5-nitro-1,10-phenanthroline) have a pronounced impact on the emission intensity of luminescence. Furthermore, the choice of the ancillary ligand also determines the efficiency of the antenna effect, leading to complete quenching of the ligand-associated visible emission for the optimized complex with 5-nitro-1,10-phenanthroline. Solution processed 1.54 μm organic light-emitting diodes have been manufactured and characterized for this complex, confirming the aforementioned complete resonant energy transfer from the ligands to the Er3+ ion. The features of the reported device fabrication show a simple way to obtain large area NIR-OLEDs. © 2013 The Royal Society of Chemistry.
U2 - 10.1039/c3tc00649b
DO - 10.1039/c3tc00649b
M3 - Article
SP - 2725
EP - 2734
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7534
ER -