Modeling of light extraction efficiency of scattering thin film using Mie scattering

• Autorzy: Cheong S. W. , Woon K. L.
• Języki publikacji: EN

Abstrakty

EN

Significant amount of emitted light from an organic light emitting diode (OLED) is trapped as a result of total internal reflection (TIR) on a glass–air interface. One of the strategies to increase the light extraction efficiency is using a scattering thin film. A model is built using the Monte Carlo ray tracing method to simulate Mie scattering. Almost 100% of light trapped by the TIR can be extracted if the radius of the spherical scatters, the refractive index ratio between the matrix and the scatter and the concentration of the scatter are optimized. The implication is important for a high efficiency OLED used in the next generation lighting source.

Słowa kluczowe

EN

organic light emitting diode; light outcoupling; Mie scattering

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2011
• Tom: Vol. 41, nr 1
• Strony: 217--223
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Cheong S. W.

autor

Woon K. L.

• Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia

Bibliografia

• [1] ADACHI C., BALDO M.A., THOMPSON M.E., FORREST S.R., Nearly 100% internal phosphorescence efficiency in an organic light-emitting device, Journal of Applied Physics 90(10), 2001, pp. 5048–5051.
• [2] JIN JANG, SUNGKYOO LIM, MYUNGHWAN OH, Technology development and production of flat panel displays in Korea, Proceedings of the IEEE 90(4), 2002, pp. 501–513.
• [3] KAI LIN WOON, CIE 1931 colour space movement of organic light emitting diode, Optoelectronics and Advanced Materials: Rapid Communications 4(2), 2010, pp. 121–124.
• [4] FRANKY SO, JUNJI KIDO, BURROWS P., Organic light-emitting devices for solid-state lighting,MRS Bulletin 33(7), 2008, pp. 663–669.
• [5] MOLLER S., FORREST S.R., Improved light out-coupling in organic light emitting diodes employing ordered microlens arrays, Journal of Applied Physics 91(5), 2002, pp. 3324–3327.
• [6] SAXENA K., MEHTA D.S., RAI V.K., SRIVASTAVA R., CHAUHAN G., KAMALASANAN M.N., Implementation of anti-reflection coating to enhance light out-coupling in organic light-emitting devices, Journal of Luminescence 128(3), 2008, pp. 525–530.
• [7] YOUNG RAG DO, YOON-CHANG KIM, YOUNG-WOO SONG, YONG-HEE LEE, Enhanced light extraction efficiency from organic light emitting diodes by insertion of a two-dimensional photonic crystal structure, Journal of Applied Physics 96(12), 2004, pp. 7629–7636.
• [8] YOON-CHANG KIM, YOUNG RAG DO, Nanohole-templated organic light-emitting diodes fabricated using laser-interfering lithography: Moth-eye lighting, Optics Express 13(5), 2005, pp. 1598–1603.
• [9] BATHELT R., BUCHHAUSER D., GARDITZ C., PAETZOLD R., WELLMANN P., Light extraction from OLEDs for lighting applications through light scattering, Organic Electronics 8(4), 2007, pp. 293–299.
• [10] SANG-HWAN CHO, YOUNG-WOO SONG, JOON-GU LEE, YOON-CHANG KIM, JONG HYUK LEE,JAEHEUNG HA, JONG-SUK OH, SO YOUNG LEE, SUN YOUNG LEE, KYU HWAN HWANG, DONG-SIK ZANG,YONG-HEE LEE, Weak-microcavity organic light-emitting diodes with improved light out-coupling,Optics Express 16(17), 2008, pp. 12632–12639.
• [11] SHIANG J.J., DUGGAL A.R., Application of radiative transport theory to light extraction from organic light emitting diodes, Journal of Applied Physics 95 (5), 2004, pp. 2880–2888.
• [12] GREINER H., Light extraction from organic light emitting diode substrates: Simulation and experiment, Japanese Journal of Applied Physics Part 1 46(7A), 2007, pp. 4125–4137.
• [13] WEINER I., RUST M., DONNELLY T.D., Particle size determination: An undergraduate lab in Miescattering, American Journal of Physics 69(2), 2001, pp. 129–136.
• [14] WILSON J.D., FOSTER T.H., Mie theory interpretations of light scattering from intact cells, Optics Letters 30(18), 2005, pp. 2442–2444.
• [15] WENINGER K.R., EVANS P.G., PUTTERMAN S.J., Time correlated single photon Mie scattering from a sonoluminescing bubble, Physical Review E 61(2), 2000, pp. R1020–R1023.
• [16] RIEFLER N., WRIEDT T., Intercomparison of inversion algorithms for particle-sizing using Miescattering, Particle and Particle Systems Characterization 25(3), 2008, pp. 216–230.
• [17] JONSSON J.C., SMITH G.B., NIKLASSON G.A., Experimental and Monte Carlo analysis of isotropic multiple Mie scattering, Optics Communications 240(1–3), 2004, pp. 9–17.
• [18] VAN DE HULS H.C., Light Scattering by Small Particles, Dover Publications, 1981, pp. 114–128.
• [19] D’ANDRADE B.W., BROOKS J., ADAMOVICH V., THOMPSON M.E., FORREST S.R., White light emission using triplet excimers in electrophosphorescent organic light-emitting devices, Advanced Materials 14(15), 2002, pp. 1032–1036.
• [20] BULOVIC V., KHALFIN V.B., GU G., BURROWS P.E., GARBUZOV D.Z., FORREST S.R., Weak microcavity effects in organic light-emitting devices, Physical Review B 58(7),1998, pp. 3730–3740.