Quantum Efficiency Determination using Photothermal Deflection Spectroscopy

In this study, we present a new method to measure the fluorescence quantum efficiency (QE) of organic dyes using photothermal deflection spectroscopy (PDS).~ While PDS has been used in the past to measure QE, the data presented in this study were taken without the use of reference standards.~ Dyes used in the study had QE~ranging from 0-1 and data agree well with reported literature values.~ This new method obviates the need for integrating sphere setups and multiple calibration measurements, thereby streamlining the entire measurement process.