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

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)


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
Article number15
Pages (from-to)105-116
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 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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