Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Organosilicon LED Encapsulants Based on Polysiloxane and Polysilazane

폴리실록산과 폴리실라잔 기반 유기실리콘 LED 봉지재의 제조

  • Eun, Hee Chun (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Huh, Tae-Hwan (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kwark, Young-Je (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 은희천 (숭실대학교 유기신소재.파이버공학과) ;
  • 허태환 (숭실대학교 유기신소재.파이버공학과) ;
  • 곽영제 (숭실대학교 유기신소재.파이버공학과)
  • Received : 2018.05.17
  • Accepted : 2018.06.13
  • Published : 2018.06.30
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Abstract

A mixture of polysiloxane (PSO) and polysilazane (PSZ) was used to prepare a crosslinked organosilicon material for use as an LED encapsulant. The crosslinking was conducted by using two different chemistries: platinum-catalyzed hydrosilylation and peroxide-initiated radical reaction. Successful crosslinking was confirmed by FT-IR spectroscopy, which showed decreased intensities of vinyl ($3,100cm^{-1}$) and hydrosilane ($2,140cm^{-1}$) peaks. The prepared films showed high transparency (>90% at 400 nm) because of the high compatibility between PSO and PSZ. The crosslinked organosilicon films showed higher hardness values when both PSO and PSZ were used at the same time, indicating higher crosslinking density.

Keywords

References

  1. J. Michl, J. W. Downing, T. Karatsu, A. J. McKinley, G. Poggi, G. M. Wallraff, R. Sooriyakumaran, and R. D. Miller, "Solution Photochemistry of Poly(dialkylsilanes): A New Class of Photoresists", Pure Appl. Chem.,1988, 60, 959-972. https://doi.org/10.1351/pac198860070959
  2. U. Schubert and N. Husing, "Synthesis of Inorganic Materials", Wiley-VCH, Weinheim, Ch. 5, 2004.
  3. W. Norris, M. Bahadur, and M. Yoshitake, "Novel Silicone Materials for LED Packaging", Proc. of SPIE, 2005, 5941, 594115.
  4. G. Muzio, M. Miola, S. Perero, M. Oraldi, M. Maggiora, S. Ferraris, E. Verne, V. Festa, F. Festa, R. A. Canuto, and M. Ferraris, "Polypropylene Prostheses Coated with Silver Nanoclusters/Silica Coating Obtained by Sputtering: Biocompatibility and Antibacterial Properties", Surf. Coat. Technol., 2017, 319, 326-334. https://doi.org/10.1016/j.surfcoat.2017.03.057
  5. J. Lv, J. Bai, K. Zhou, X. Mei, K. Wang, M. Li, G. Cheng, "Transmission Performance of $90^{\circ}$-Bend Optical Waveguides Fabricated in Fused Silica by Femtosecond Laser Inscription", Opt. Lett., 2017, 42, 3470-3473. https://doi.org/10.1364/OL.42.003470
  6. J.-S. Kwon, S. Y. Lee, D. H. Kim, and Y.-J. Kwark, "Solvent-Free Processable and Directly Photo-Patternable Silsesquioxane Gate Dielectrics for Top-Gate Organic Transistors", Text. Sci. Eng., 2017, 54, 344-350.
  7. S. L. Guillot, A. Pena-Hueso, M. L. Usrey, and R. J. Hamers, "Thermal and Hydrolytic Decomposition Mechanisms of Organosilicon Electrolytes with Enhanced Thermal Stability for Lithium-Ion Batteries", J. Electrochem. Soc., 2017, 164, A1907-A1917. https://doi.org/10.1149/2.0671709jes
  8. M. Esbayou, F. Bentiss, M. Casetta, A. Nyassi, and C. Jama, "Optimization of Cold Plasma Process Parameters for Organosilicon Films Deposition on Carbon Steel: Study of the Surface Pretreatment Effect on Corrosion Protection Performance in wt% NaCl Medium", J. Alloy. Compd., 2018, 758, 148-161. https://doi.org/10.1016/j.jallcom.2018.05.111
  9. B. Liu, T. Tian, J. Yao, C. Huang, W. Tang, Z. Xiang, X. Xu, and J. Min, "Superhydrophobic Organosilicon-Based Coating System by a Novel Ultravoilet-Curable Method", Nanomater. Nanotechnol., 2017, 7, 1-10.
  10. M. S. Crosley and W. T. Yip, "Silica Sol-Gel Optical Biosensors: Ultrahigh Enzyme Loading Capacity on Thin Films via Kinetic Doping", J. Phys. Chem. B, 2017, 121, 2121-2126.
  11. S. Marceaux, C. Bressy, F.-X. Perrin, C. Martin, and A. Margaillan, "Development of Polyorganosilazane-Silicone Marine Coatings", Prog. Org. Coat., 2014, 77, 1919-1928. https://doi.org/10.1016/j.porgcoat.2014.06.020
  12. H. Kozuka, K. Nakajima, and H. Uchiyama, "Superior Properties of Silica Thin Films Prepared from Perhydropolysilazane Solutions at Room Temperature in Comparison with Conventional Alkoxide-Derived Silica Gel Films", ACS Appl. Mater. Interfaces, 2013, 5, 8329-8336. https://doi.org/10.1021/am400845y
  13. C. B. Y. Janet, "Blue-Light Light-Emitting Diode", U.S. Patent 2007/0247060 (2007).
  14. J.-S. Kim, S. C. Yang, and B.-S. Bae, "Thermally Stable Transparent Sol-Gel Based Siloxane Hybrid Material with High Refractive Index for Light Emitting Diode (LED) Encapsulation", Chem. Mater., 2010, 22, 3549-3555. https://doi.org/10.1021/cm100903b
  15. S. C. Yang, S.-Y. Kwak, J. Jin, J.-S. Kim, Y. Choi, K.-W. Paik, and B.-S. Bae, "Thermally Resistant UV-Curable Epoxy-Siloxane Hybrid Materials for Light Emitting Diode (LED) Encapsulation", J. Mater. Chem., 2012, 22, 8874-8880. https://doi.org/10.1039/c2jm16355a
  16. Y. C. Han, C. Jang, K. J. Kim, K. C. Choi, K. Jung, and B.-S. Bae, "The Encapsulation of An Organic Light-Emitting Diode Using Organic-Inorganic Hybrid Materials and MgO", Org. Electron., 2011, 12, 609-613. https://doi.org/10.1016/j.orgel.2011.01.007
  17. J. Jin, J. J. Lee, B.-S. Bae, S. J. Park, S. Yoo, and K. H. Jung, "Silica Nanoparticle-Embedded Sol-gel Organic/Inorganic Hybrid Nanocomposite for Transparent OLED Encapsulation", Org. Electron., 2012, 13, 53-57. https://doi.org/10.1016/j.orgel.2011.09.008
  18. H.-C. Eun, H.-E. Im, Y. S. Lee, and Y.-J. Kwark, "Preparation of Silicon-Based Hybrid Gels with POSS Additives and Their Application to LED Encapsulants", Polymer(Korea), 2015, 39, 311-316.
  19. C. Zhang and R. M. Laine, "Hydrosilylation of Allyl Alcohol with : Octa(3-hydroxypropyldimethylsiloxy) octasilsesquioxane and Its Octamethacrylate Derivative as Potential Precursors to Hybrid Nanocomposites", J. Am. Chem. Soc., 2000, 122, 6979-6988. https://doi.org/10.1021/ja000318r