Electron and hole mobility in vacuum deposited organic thin films of bis[2-(2-hydroxyphenyl)benzoxazolate]zinc and its derivatives

Takeshi Yasuda, Yoshihisa Yamaguchi, Katsuhiko Fujita, Tetsuo Tsutsui

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The electronic properties of five derivatives of bis[2-(2-hydroxyphenyl)benzoxazolate]zinc (ZnPBO) have been investigated by the time-of-flight measurement of their thin films prepared with vacuum deposition. The electron and hole mobilities at electric field of 5 × 105 V/cm for these compounds were 10-5 cm2/Vs and 10 -6-10-8 cm2/Vs, respectively. The electron mobility was found to be almost identical among those used in this study and higher than that of the representative electron transporting organic material, Alq. The hole mobility had significantly increased as the π-conjugation of the ligands of the complexes was extended.

Original languageEnglish
Pages (from-to)644-645
Number of pages2
JournalChemistry Letters
Volume32
Issue number7
DOIs
Publication statusPublished - Jul 5 2003

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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