A New Dioxasilepine-Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector.

A new dioxasilepine and aryldiamine hybrid material is designed to act as the electron-blocking layer (EBL) for vacuum-processed organic photodetector (OPD). The O-Si-O-linked cyclic structure leads to have dipolar character, high LUMO, and good thermal and morphology stability suitable for vacuum deposition. An initial trial with C-based single active layer OPD device manifests the superior capability of for dark current suppression compared to the typical aryldiamines.