Multiple LEDs in the TLS provide higher light intensity across the broad wavelength range and longer operational lifetime as compared to any traditional Xe-lamp. This high light intensity is crucial for IPCE measurements on DSSC, perovskites or organic solar cells or photoelectrodes.
Like the modular LEDs used in the CIMPS system, the TLS is also able to carry out sine-wave modulation for IPCE measurements and does not require a mechanical chopper. During IPCE measurements, a special indicator is also provided which indicates if the measurement parameters are optimum for IPCE measurement or not. Further information about IPCE measurement is provided in our application note CIMPS-IPCE.
Zahner offers TLS with two different wavelength ranges.