Title :
Enhancement of light out-coupling efficiency of organic light-emitting devices by anti-reflection coating technique
Author :
Mehta, Dalip Singh ; Saxena, Kanchan ; Rai, Virendra Kumar ; Srivastava, Ritu ; Kamalasanan, M.N.
Author_Institution :
Indian Inst. of Technol., Delhi
Abstract :
We report significant enhancement of light out- coupling efficiency in organic light-emitting devices (OLEDs) by means of anti-reflection coating of magnesium fluoride (MgF2) on the backside of glass substrate. OLEDs were fabricated employing the green electrophosphorescent material fac tris (2- phenylpyridine) iridium [Ir(ppy)3] doped in 4, 4´, 8-N, N 8-dicarbazole-biphenyl (CBP). Single- layer MgF2 with the thickness of lambda/4 was then vacuum deposited on the backside of glass substrate of OLED.
Keywords :
antireflection coatings; magnesium compounds; organic light emitting diodes; MgF2; anti reflection coating; glass substrate; green electrophosphorescent material; light out coupling efficiency; magnesium fluoride; organic light emitting devices; Cathodes; Coatings; Fabrication; Glass; Indium tin oxide; Magnesium compounds; Optical propagation; Organic light emitting diodes; Refractive index; Substrates;
Conference_Titel :
Physics of Semiconductor Devices, 2007. IWPSD 2007. International Workshop on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4244-1728-5
Electronic_ISBN :
978-1-4244-1728-5
DOI :
10.1109/IWPSD.2007.4472598
