High-performance photorefractive organic glass based on diphenylhydrazone

Chil-Sung Choi; In Kyu Moon; Nakjoong Kim
February 2009
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
Academic Journal
A multifunctional molecule that possesses photoconductive and electro-optic properties in one molecule was synthesized as a photorefractive organic glass. Diphenylhydrazone as a photoconductive moiety was covalently bound to the enamine derivative as an electro-optic chromophore via a flexible ester link. The sample prepared from a mixture of the multifunctional molecule (99 wt %) and fullerene C60 (1 wt %) showed good photorefractive properties. The 100 μm thick film showed a maximum diffraction efficiency of 69% at a low applied field of 25 V/μm, corresponding to a refractive index modulation (Δn) of 1.50×10-3 and a photoconductivity of 0.46 pS/cm.


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