Photorefractive molecular composite bearing the phenothiazine derivatives

Dong Hoon Choi, Woong Gi Jun, Dong Hoon Choi

Research output: Contribution to journalArticlepeer-review


We report the characteristics of the diffraction behavior of the photorefractive (PR) molecular materials that contains the phenothiazine derivatives. Diphenylhydrazine and malononitrile were reacted with N-alkyl substituted phenothiazinyl aldehyde to provide the charge transporting and nonlinear optical(NLO) chromophore, respectively. The resultant phenothiazine derivatives were employed to fabricate the efficient photorefractive media either without or with 2,4,7-trinitrofluorenone (TNF). The prepared molecular samples can contain the very high NLO chromophore (50-100 wt%). We showed very unusual complementary grating to reduce the hole transport/trap effect from pure photorefractivity and how to control the counter-effect from the electron transport/trap phenomena. Adding the specific molecules to the host PR materials reduced the electron transport effect that is responsible for the complementary grating, thereby causing a dominant contribution of hole transport effect to the grating formation and erasing processes.

Original languageEnglish
Pages (from-to)146-153
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2002
Externally publishedYes


  • Electron transport
  • Hole transport
  • Nonlinear optical
  • Phenothiazine
  • Photorefractive

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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