Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2884312
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We report temperature dependent photoluminescence studies on phosphorus doped ZnO nanowires. The shape of the spectra is very similar to those of phosphorus doped ZnO films. The photoluminescence spectrum at 10 K is dominated by neutral acceptor bound exciton (A X-0) emissions. The acceptor binding energy determined also agrees with the corresponding value in phosphorus doped films. Studies on the A X-0 intensity show two quenching channels, associated with the thermal dissociations of A X-0 to a free exciton and of shallow residual donors. The residual donors revealed provide a clue for the difficulty in p doping of ZnO. (C) 2008 American Institute of Physics.
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