Abstract
Photoluminescence (PL) spectra of electron beam evaporated (ZnxCd1−x)3P2 thin films with composition (x) equal to 0.0, 0.2, 0.4, 0.5, 0.8, and 1.0 have been recorded at 100 K. The radiative transitions associated with the different PL peaks are correlated considering the distribution of native defects which act either as acceptor (A)- or donor (D)-like centers. In the case of (Zn0.5Cd0.5)3P2 films, which showed some satellite structure, the emission at 0.92 eV is related to the DA pairs (associated phosphorous interstitials and vacancies) with the distance of separation estimated in the range of 10–30 Å.
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