Optimizing cadmium (Cd) alloy solar cells with sputtered copper-doped zinc telluride (ZnTe:Cu) back contacts in the presence of hydrogen

A method of calibrating a deposition device to generate a plurality of time and temperature offsets, the method comprising:

• setting a substrate holder system of the deposition device to a first set point temperature;
• continuously detecting a surface temperature on a calibration surface until a normalization temperature;
• recording a time and a surface temperature offset at the normalization temperature;
• repeatedly incrementing the first set point temperature to a next set point temperature, detecting a next surface temperature at a next normalization temperature respective to the next set point temperature, and recording a next time and a next surface temperature offset respective to the next set point temperature until the substrate holder system is set to a last set point temperature;
• and
• generate the plurality of time and temperature offsets for the deposition device from each recording at each increment from the first set point temperature to the last set point temperature.