Synthesis and characterization of some 5-coordinated aluminum-8-hydroxyquinoline derivatives for OLED applications

Optical properties of organic thin films deposited via organic vapour phase deposition

“…Figure 4 shows the measured 〈 ε ( ω )〉 spectra in the IR spectral region of a representative Alq 3 thin film grown for deposition time 460 s onto Si substrate. The main bonding vibration bands that can be distinguished are found in the range of 1057 cm −1 (stretching vibration of the CCO group), 1373 cm −1 (aromatic CNC stretching), 1466 and 1578 cm −1 (characteristic skeleton stretching vibrations of CC within the aromatic ring) and 3048 cm −1 band are from the stretching vibration of CH bond in aromatic ring 7.…”

“…One of the premier organic materials which is used as light‐emitting and electron transporter layer in OLED is tris(8‐hydroxyquinoline) aluminium (Alq 3 ). Another popular organic material which used in OLED as hole transport layer is N,N′‐di‐1‐naphthyl‐N,N′‐diphenyl‐1,1′‐biphenyl‐4,4′diamine (α‐NPD) 3, 6–10. However, OLEDs show relatively poor stability and improving the lifetime of these devices remains an important challenge.…”

Synthesis and electroluminescent property of dinuclear aluminum 8-hydroxyquinoline complex

“…The maximum efficiency of DAlq 3 -based device (2.2 cd/A) is a little higher than that of Alq 3 -based device (2.0 cd/A), which may be attributed to the bigger molecular size of DAlq 3 . The EL performance of DAlq 3 is better than that of Alq 3 modified with the other means, such as doped Alq 3 [20], pentacoordinated Alq 3 [21], special structural OLED [22] and so on.…”

Investigation of photophysical properties of mer-tris(8-hydroxyquinolinato) aluminum (III) and its derivatives: DFT and TD-DFTcalculations

“…During the last decade, organic chemists have seen a great development in the preparation of hosts and emitters comparable to Alq 3 , and further improvements in the efficiency of OLEDs materials have been achieved [15][16][17][18][19][20]. By using various substitutions at Alq 3 and investigating its photophysical properties, one can provide an important approach to modify the photoluminescence and thermal properties of Alq 3 derivatives [20,21].…”