Synthesis and electroluminescence properties of tris-[5-choloro-8-hydroxyquinoline] aluminum Al(5-Clq)3. (June 2015)

• Record Type: Journal Article
• Authors: Kumar, Rahul; Bhargava, Parag; Srivastava, Ritu; Tyagi, Priyanka
• Is Part Of: Journal of semiconductors. Volume 36:Number 6(2015:Jun.)
• Page Start: 49
• Publication Date: 2015-06
• Subjects: Semiconductors -- Periodicals; 621.38152
• DOI: 10.1088/1674-4926/36/6/064001
• Languages: English
• ISSNs: 1674-4926

Abstract

<abstract> <title>Abstract</title> <p>A new electroluminescent material tris-[5-choloro-8-hydroxyquinoline] aluminum has been synthesized and characterized. Solution of this material Al(5-Clq)₃ in toluene showed absorption maxima at 385 nm which was attributed to the moderate energy (π–π*) transitions of the aromatic rings. The photoluminescence spectrum of Al(5-Clq)₃ in toluene solution showed a peak at 522 nm. This material shows thermal stability up to 400 °C. The structure of the device is ITO/0.4 wt%F4-TCNQ doped α-NPD (35 nm) / Al(5-Clq)₃ (30 nm) / BCP (6 nm) / Alq₃ (30 nm) / LiF (1 nm) / Al (150 nm). This device exhibited a luminescence peak at 585 nm (CIE coordinates, <italic>x</italic> = 0.39, <italic>y</italic> = 0.50). The maximum luminescence of the device was 920 Cd/m² at 25 V. The maximum current efficiency of OLED was 0.27 Cd/A at 20 V and maximum power efficiency was 0.04 lm/W at 18 V.</p> </abstract>