Steady-state SPV shows "how much separated," while transient TPV shows "how long it lasts." The longer the charge lifetime, the more chance carriers have to reach the surface and react; together they determine the effective separation efficiency.
The PL-TPV Transient Surface Photovoltage Spectrometer uses time-resolved methods to capture the fast evolution of the surface potential after illumination, giving kinetic parameters such as charge lifetime and transfer rate—a mechanism-level characterization tool.
Use the PL-SPV/IPCE1000 Steady-State Surface Photovoltage Spectrometer to confirm separation strength, then use the PL-TPV to see the kinetic timescale. This distinguishes "separates a lot but dies fast" from "separates little but lives long," guiding different optimization directions.
It is ideal for comparing charge-dynamics differences among heterojunctions, co-catalysts, or defect engineering, and for locating the timescale bottleneck that limits activity.
Free consultation: Can't see fast vs. slow from steady-state SPV? Perfectlight's PL-TPV Transient Surface Photovoltage Spectrometer adds the time dimension and makes charge dynamics clear.
Tel: 400-1161-365 / 010-62128921 Perfectlight Official Website
Steady-state SPV shows how much charge separates; transient TPV shows how long it lasts—together they give effective separation efficiency.
It captures the time-resolved surface-potential evolution after illumination, yielding charge lifetime and transfer rate as kinetic parameters.
It compares charge-dynamics differences among heterojunctions, co-catalysts, or defect engineering and locates the timescale bottleneck of activity.
This article does not constitute a performance commitment; specific technical parameters are subject to the actual product documentation and mutual confirmation.
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