Ultrafast carrier dynamics in microcrystalline silicon studied by time-resolved terahertz spectroscopy

摘要

Using optical pump - THz probe experiments we studied a series of 1-μm-thick μc-Si:H samples with a variable degree of crystallinity deposited on sapphire substrates. The data provide a full picture of nanoscopic transport of photocarriers on a 100fs-1ns timescale.