Optical properties of perylene microcrystals

Hitoshi Kasai, Yuko Yoshikawa, Toshihiro Seko, Shuji Okada, Hidetoshi Oikawa, Hiro Mastuda, Akira Watanabe, Osamu Ito, Hideki Toyotama, Hachiro Nakanishi

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


The optical properties of perylene microcrystals in wide range of crystal size from 50 nm to 1 μm were measured. The interesting behavior of exciton in microcrystals with less than 200nm was found. For example, with decreasing the crystal size, self-trapped exciton states in microcrystals shifted to the high energy side. Therefore, the strong luminescence from free-exciton was observed, and life time of self-trapped exciton became shorter.

Original languageEnglish
Pages (from-to)173-176
Number of pages4
JournalMolecular Crystals and Liquid Crystals
Publication statusPublished - 1997


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