Observation of nonradiative energy transfer in the excitation of Nd3+ in GaP
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Donegan, J.F., Observation of nonradiative energy transfer in the excitation of Nd3+ in GaP, Physical Review B, 41, (14), 1990, p10254 - 10256Download Item:
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Abstract:
We have carried out luminescence-excitation measurements on a Nd3+ complex in GaP in the range 1.5?2.2 eV to determine the mechanisms by which the internal Nd3+ luminescence is generated. At low temperatures we observe transitions into the 4S3/2 and 4F7/2 excited states of Nd3+ and two broad excitation bands whose integrated intensities are orders of magnitude greater than that of the Nd3+ excited states. These broadbands demonstrate for the first time that nonradiative energy transfer from external states is the dominant low-temperature mechanism for the excitation of Nd3+ luminescence in GaP. Reasonable assignments have been made for the origin of the broadbands on the basis of similar work carried out on rare-earth-doped II-VI semiconductors.
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Author: DONEGAN, JOHN FRANCIS
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American Physical SocietyType of material:
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Physical Review B41
14
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