Probing charging effects induced in ITO/polyimide/6,13-Bis(triisopropylsilylethynyl)-pentacene/Au diodes by time-resolved optical second harmonic generation measurement

► The charging effects was induced in double-layer diodes with TIPS-pentacene. ► Fresh samples showed EFISHG response due to electrode and interfacial charging. ► Aged samples showed the electrode charging only.