Relation between composition ratio and energy gap of n-Nonylamine/PbI2 composite materials

Ryo Wada, Hisao Kuriyaki

Research output: Contribution to journalArticlepeer-review


By n-nonylamine (NA) intercalation into PbI2, NA/PbI2 composite materials were synthesized with the molar ratio, n, of NA for PbI2 of 0∼4. The energy gap was found to change from 2.43eV to 3.20eV by NA intercalation from the transmittance spectra. In particular, it increased rapidly at n = 0∼1. It was also found from the X-ray diffraction measurement that NA's in the van der Waals gaps formed 2-layers for n ≥ 1, and lay tilted at angles of 53.8° or 30.1° to the c-axis direction. The increase in the energy gap is thus supposed to be caused by the increase of the volume ratio of the 2-layers for the 0-layer.

Original languageEnglish
Pages (from-to)65-68
Number of pages4
JournalResearch Reports on Information Science and Electrical Engineering of Kyushu University
Issue number1
Publication statusPublished - Mar 2002

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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