PearL and t-PearL
PearL and t-PearL for room temperature deposition processes.
LayTec’s spectral and time-resolved photoluminescence (PL) metrology systems PearL and t-PearL are originally designed for in-line application as PL requires room-temperature or even lower temperatures. However, for room-temperature processes like perovskite deposition, also in-situ versions of these systems are available.
Monitoring of band gap and charge carrier lifetimes during deposition or ageing
Composition monitoring (if related to bandgap)
Spectral and time-resolved PL monitoring for a wide range of excitation wavelengths
Detection in VIS or NIR spectral ranges
Lifetime resolution down to 5 ns
Can be combined with spectral reflectance monitoring (InspiRe) in shared measurement head
Spectral analysis by multi-peak fitting algorithms
tr-PL transients can be fitted by mono- or biexponential decay functions
Features
Combination with InspiRe for reflectance monitoring in shared measurement head
In-line versions for sheet-to-sheet or roll-to-roll production lines are available
Real-time monitoring of band gap evolution and lifetime during deposition in order to drive film composition and quality toward its optimum.
Contact
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