(a) Digital image of the measurement setup, and (b) output power of the SCAM solar cell systems as a function of the supporting ERP height. The straight blue line indicates the output power of the WSSC cell packaged by a flat ERP film 2 mm thick, and the number above each output power (red dot) indicates the value of γ corresponding to h. The inset in panel (a) is the enlarged image of the measured SCAM.