Ultrahigh-density memory using organic dot structures

摘要

The effect of injected charges on the fluorescence of organic thin films consisting of donor molecular dot structures (10-50 nm diameter) was investigated. Fluorescence was efficiently quenched by charge injection. By a comparison offluorescence measurements and current measurements, it was found that hole injection played an essential role in fluorescence quenching while electron injection did not. Coulomb interaction between photoexcited molecules and injected carriers was foundto cause fluorescence quenching. Scanning near-field optical microscopy (SNOM) revealed that the fluorescence of organic dot structures was quenched by charge injection.