X-ray diffraction (XRD) measurements were done using a PANalytical X-Pert Pro MRD-XL diffractometer equipped by a CuK⍺ source and operated in Bragg–Brentano configuration. Solar cells (both a-Si:H/mc-Si:H tandem and mc-Si:H p-i-n devices) were produced to investigate the influence of variations in the front TCO morphology on performance.