Influence of Space Charge and Potential Fluctuations on Photoconductivity Spectra of Semiinsulating CdTe

The influence of polarization effects on room temperature photoconductivity spectra of high-resistivity CdTe was investigated. It was shown, that space charge accumulated on deep levels can result in a different energy position of the main photoconductivity maximum at opposite polarities of the applied electric field. The shift of the main photoconductivity maximum to lower energies with an applie...