Synthesis and Electroluminescence Characterization of Cadmium Complex

Author(s) Rahulkumar1, K. Singh1, R. Srivastava2 , M.N. Kamlasanan2

1 Thapar University, 147004, Patiala, India

2 National Physical Laboratory 110012, New Delhi, India

Issue Volume 3, Year 2011, Number 1, Part 3
Dates Received 04 February 2011, published online 23 June 2011
Citation Rahulkumar, K. Singh, R. Srivastava, M.N. Kamlasanan, J. Nano- Electron. Phys. 3 No1, 514 (2011)
PACS Number(s) 81.20.ka, 81.70.Pg, 85.60.Jb
Key words Luminescence (21) , Thermal stability (5) , Cadmium complex Cd(hpb)q, FTIR (16) .
We have synthesized and characterized a new electroluminescence material,Cadmium [(2-(2-hydroxyphenyl)benzoxazole)(8-hydoxyquinoline)] Cd(HPB)q. The absorption spectra of this material show maxima at 378 nm. It may be attributed due to π° – π* transition. The photoluminescence showed peak at 520 nm. TGA data of the material shows stability up to 370 °C .Organic light emitting diode have been fabricated with this material and the fundamental structures of the device is ITO/α-NPD/ Cd(HPB)q/BCP/Alq3/LiF/Al exhibited a luminescence peak at 550 nm. The maximum luminescence of the device was 295 cd/m2 with current density of 6687 A/m2 at 20 V. The maximum current efficiency of OLED was 1.01 cd/A at 17 V and power efficiency was 1.01 lm/w at 17 V.