Polycrystals, and mesoporous oxide

In this section, the basic characteristics of time-resolved THz spectroscopy (TRTS) are discussed. Generation and detection of THz radiation is briefly introduced and the layout and operation of a common THz setup is described. Also, theoretical models suited to describe the response of carriers in the THz frequency window are presented for three different semiconductor geometries that are relevant for conventional and novel PV applications (Section 11.2.2.1) bulk semiconductors, (Section 11.2.2.2) polycrystals and mesoporous oxide films and (Section 11.2.2.3) semiconductor quantum dots (QDs). 

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