Title :
Light extraction in organic light-emitting diode using PDMS/TiO2 scattering substrates
Author :
De Girolamo Del Mauro, A. ; Lepera, E. ; Bruno, Alessandro ; Fasolino, Tracy ; Maglione, M.G. ; Nenna, Giuseppe ; Minarini, Carla
Author_Institution :
Portici Res. Center, Italian Nat. Agency for New Technol., Portici, Italy
Abstract :
In the present work, thick (~1 mm) films were realized using polydimethylsiloxane (PDMS) with different concentrations of TiO2 nanoparticles (0.025, 0.05, 0.1, 0.5 and 5 weight %). Angle resolved scattering (ARS) measurements on these films have been performed to explore their optical parameters. In particular, the parameters of anisotropy g and of scatterance s were obtained. We used these data to evaluate their possible use in OLED devices with “ray tracing” simulation. The results obtained showed that the scattering substrate with 0.025% in weight of TiO2 could achieve an improvement in terms of OLED efficiency equal to 16%.
Keywords :
integrated optoelectronics; light scattering; nanoparticles; nanophotonics; optical polymers; organic light emitting diodes; polymer films; ray tracing; titanium compounds; ARS; OLED devices; OLED efficiency; PDMS-TiO2 scattering substrates; TiO2; angle resolved scattering; light extraction; nanoparticles; optical parameters; organic light emitting diode; polydimethylsiloxane; ray tracing; scatterance; Films; Nanoparticles; Q measurement; Substrates; TiO2 nanoparticles; angle resolved scattering; diffusive substrates; light scattering;
Conference_Titel :
Photonics Technologies, 2014 Fotonica AEIT Italian Conference on
Conference_Location :
Naples
Print_ISBN :
978-8-8872-3718-4
DOI :
10.1109/Fotonica.2014.6843876
