Abstract
The lowest-energy structures of Al n P n clusters up to n = 9 have been explored using all-electron density functional calculations with a gradient correction. For smaller Al n P n clusters with n = 1–4, we successfully reproduced the previously reported lowest-energy structures. Novel cage structures with Al–P alternating arrangement were observed for n ⩾ 5. The comparison of the lowest-energy structures of Al n P n clusters with those of Si 2 n , B n N n , and Ga n As n clusters has been made. Size-dependent cluster properties such as binding energy, HOMO–LUMO gaps, electron affinities, and photoelectron spectra have been computed and compared with experiments.
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