(retired), was in the Department of Chemistry, Division of Natural
Science, International Christian University, in Japan.
He was a post-doctoral scientist in our laboratory, coming from
the laboratory of Professor Hiroo Inokuchi. He and I showed in 1965 that
electroluminescence in anthracene was caused by the recombination of
thermalized holes and electrons, proving definitely that the singlet exciton energy level of
anthracene (and hence all aromatic conjugated hydrocarbons) was below
the band gap. This was a seminal result in the field of