Observation of a Photoinduced Lattice Relaxation in CdTe:In
- Cinvestav, Unidad Merida, Merida, Yucatan 97310 (Mexico)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
The local atomic structure of CdTe:In at an In concentration of 6 at.thinsp{percent} was investigated by x-ray absorption spectroscopy before and after photoexcitation at 80thinspthinspK. After photoexcitation, In K edge spectra change in both the near-edge and x-ray absorption fine structure (XAFS) regions, showing a change in local structure. Cd and Te structural parameters are consistent with the structure of CdTe and did not change after photoexcitation. For In, only the first shell contribution is present in the XAFS, indicating a disordered environment beyond the first shell of neighbors. The relation of these observations with the proposed model of a DX center for CdTe:In is discussed. {copyright} {ital 1999} {ital The American Physical Society }
- OSTI ID:
- 688038
- Journal Information:
- Physical Review Letters, Vol. 83, Issue 17; Other Information: PBD: Oct 1999
- Country of Publication:
- United States
- Language:
- English
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