Measurements of Photocurrent and Voltage using Commercial TiO2

초록

The technique of SLIM-PCV(stepped light-induced transient mearsurements of photocurrents and photovoltages) and PLIM-PCV(pulsed light-induced transient measurements of photocurrents and photovoltages) were applied to measure diffusion coefficients (De) and lifetimes (τ) of electrons in dyesensitized solar cells (DSSCs). SLIM-PCV method used to investigate a current transient induced by a stepwise change of the laser light intensity by function generator. PLIM-PCV method used to investigate a current transient induced by small-intensity laser pulse superimposed on bias light. solar cells were irradiated by a short pulse laser from the platinum electrode side.We used the P25 and P90 for commercial TiO2 nanoparticles .This study suggests that the optimized measurement method is require for the measurement of electron diffusion coefficients (De) and lifetimes (τ) of electrons.