Transport Properties of Photovoltaic Devices Via Optical Hall Effect
(Room Room 104-A)
29 Apr 19
2:20 PM
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2:40 PM
Tracks:
Coatings for Energy Conversion and Related Processes
Transport properties [carrier concentration (N), mobility (m), effective mass (m*)] of layers within photovoltaic (PV) devices are deduced from free carrier optical absorption using non-contacting optical Hall effect measurements. This new technique has the potential to determine transport properties of individual components even in complex multilayer PV device structures, which is usually inaccessible by other physical contact methods such as 4-point probe and electrical Hall effect. We build upon determining some or all of these transport properties for photovoltaic absorber layers (CH3NH3PbI3, CdTe, and CuInSe2 thin films; wafer Si) with THz ellipsometry and optical Hall effect. In this study we will demonstrate the capability of this technique to determine N, m, and m* for these absorber material samples as well as these same materials in full functional PV devices.