The doping of conventional semiconductors with deep level (DL) centers has been proposed to synthesize intermediate band materials. A recent fundamental study of the nonradiative recombination (NRR) mechanisms predicts the suppression of the NRR for ultrahigh DL dilutions as a result of the delocalization of the impurity electron wave functions. Carrier lifetime measurements on Si wafers doped with Ti in the 1020 - 1021 cm-3 concentration range show an increase in the lifetime, in agreement with the NRR suppression predicted and contrary to the classic understanding of DL action. © 2009 American Institute of Physics.
CITATION STYLE
Antolín, E., Martí, A., Olea, J., Pastor, D., González-Díaz, G., Mártil, I., & Luque, A. (2009). Lifetime recovery in ultrahighly titanium-doped silicon for the implementation of an intermediate band material. Applied Physics Letters, 94(4). https://doi.org/10.1063/1.3077202
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