Self-assembled materials and devices that process light

Peiwang Zhu, Hu Kang, Milko E. Van Der Boom, Zhifu Liu, Guoyang Xu, Jing Ma, Delai Zhou, Seng Tiong Ho, Tobin J. Marks*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


Self-assembled superlattices (SASs) are intrinsically acentric and highly cross-linked structures. For organic electro-optics, they offer great advantages such as not requiring electric field poling for creating an acentric, EO-active microstructure and having excellent chemical, thermal, and orientational stabilities. In this paper, a greatly improved two-step all "wet- chemical" self-assembly (SA) approach is reported. Excellent radiation hardness of the SAS films is demonstrated by high-energy proton irradiation experiments. By introducing metal oxide nanolayers during SA, we show that the refractive indices of SAS films can be tuned over a wide range. Through special chromophore design, the optical absorption maxima of SAS films can also be greatly blue-shifted. Prototype waveguiding electro-optic modulators have been fabricated using the SAS films integrated with low-loss polymeric materials functioning as partial guiding and cladding layers. EO parameters such as the half-wave voltage and the effective electro-optic coefficient are reported.

Original languageEnglish (US)
Article number15
Pages (from-to)105-116
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2004
EventOptical Materials in Defence Systems Technology - London, United Kingdom
Duration: Oct 25 2004Oct 27 2004


  • Blue shift
  • Charge-transfer band
  • EO modulator
  • Electro-optic (EO) material
  • Self-assembled superlattice (SAS)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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