摘要A new organic-inorganic hybrid material doped with BDK that exhibits a large photo-induced change in optical properties is prepared by the sol-gel method. The photosensitivity of the film under ultraviolet irradiation is investigated with various exposure times. An increase in refractive index from 1.558 to 1.592 at λ = 550 nm is observed together with a 57.3% expansion in physical thickness. The film's optical thickness exhibits an exponential change with the irradiation time. The photo-decomposition of BDK organic groups confirmed by the infrared absorption spectrum contributes to the photosensitive mechanism. A first example of photo-patterning is finally presented by direct light writing.
Abstract：A new organic-inorganic hybrid material doped with BDK that exhibits a large photo-induced change in optical properties is prepared by the sol-gel method. The photosensitivity of the film under ultraviolet irradiation is investigated with various exposure times. An increase in refractive index from 1.558 to 1.592 at λ = 550 nm is observed together with a 57.3% expansion in physical thickness. The film's optical thickness exhibits an exponential change with the irradiation time. The photo-decomposition of BDK organic groups confirmed by the infrared absorption spectrum contributes to the photosensitive mechanism. A first example of photo-patterning is finally presented by direct light writing.
[1] Chandross E A et al 1974 Appl. Phys. Lett. 24 72
[2] Park O H, Jung J I and Bae B S 2001 J. Mater. Res. 16 2143
[3] Park O H, Kim S J and Bae B S 2004 J. Mater. Chem. 14 1749
[4] Xu J et al 2008 Rare Metal Mater. Eng. 37 244
[5] Krug H et al 1992 Proc. SPIE 1758 448
[6] Fardad A et al 1998 Appl. Opt. 37 2429
[7] Bae B S et al 2001 J. Mater. Res. 16 3184
[8] Bae B S and Park O H 2001 Proc. SPIE 4279 101
[9] Jung J I et al 2003 J. Sol-Gel Sci. Technol. 26 897
[10] Kang D J et al 2005 Appl. Phys. Lett. 87 221106
[11] Kim W S et al 2004 J. Polym. Sci. Pol. Phys. 42 1979
[12] Yu W X et al 2002 Opt. Express 10 443
[13] Kang D J, Kim J K and Bae B S 2004 Opt. Express 12 3974
[14] Kang D J and Bae B S 2007 Accounts Chem. Res. 40 903
[15] Mao J et al 2010 Chin. Opt. Lett. 8 435
[16] Shen W D and Liu X 2005 Chin. J. Semicond. 26 335
2011, Vol. 28 
