Application of Spectral Photoconductivity to Silicon and Silicon Devices

Spectral photoconductivity has been systematically used in the past and is still used in sophisticated characterization measurements of silicon.

As an example, SP was used in early studies of heat-treated silicon [31], of amorphous silicon [32] and of neutron-irradiated silicon [33].

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More recently, spectral photoconductivity has been successfully used for the detection of isotopic effects in impurity contaminated silicon (Figure 5.10) [34] and for the study of Si/Ge quantum structures (Figure 5.11) [35]. It is worth noting the significant contribution of the quantum dots to the photoconductivity under subband illumination.