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PreprintCC BY 4.0arXiv

Donor-acceptor recombination in diamond

  • Konstantin Iakoubovskii
  • Andrey Katrusha
  • Weihua Peng
  • Jianguo Peng
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Abstract

We re-examine several optical systems that have previously been attributed to donor-acceptor (D-A) recombination in diamond, including the broad 2.8 eV and 2.3 eV bands, and the sharp-lined series in the ranges 2.0-2.7 eV and 4.0-5.0 eV. In all cases, internal transitions at one or multiple defect centers provide a more consistent explanation of the experimental observations than the D-A model. The 2.3 eV case is marginal, where the key argument against the D-A recombination is the improbably low probability of tunneling between remote donors and acceptors in diamonds with very low concentrations of impurities (~0.1 ppm). A more realistic model for the 2.3 eV band and the associated phosphorescence and thermoluminescence phenomena is trapping of electrons and holes at nitrogen and boron defects, respectively, followed by recombination at a deep center, which is tentatively assigned to the nearest neighbor B-N pair.

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Cite

BibTeXRIS
BibTeX
@misc{iakoubovskii2026donoracceptor,
  title = {{Donor-acceptor recombination in diamond}},
  author = {Konstantin Iakoubovskii and Andrey Katrusha and Weihua Peng and Jianguo Peng},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.30977},
  eprint = {2610.30977},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.30977},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Donor-acceptor recombination in diamond
AU  - Konstantin Iakoubovskii
AU  - Andrey Katrusha
AU  - Weihua Peng
AU  - Jianguo Peng
PY  - 2026
DA  - 2026/10/22
PB  - arXiv
DO  - 10.48550/arxiv.2610.30977
UR  - https://arxiv.org/abs/2610.30977
AB  - We re-examine several optical systems that have previously been attributed to donor-acceptor (D-A) recombination in diamond, including the broad 2.8 eV and 2.3 eV bands, and the sharp-lined series in the ranges 2.0-2.7 eV and 4.0-5.0 eV. In all cases, internal transitions at one or multiple defect centers provide a more consistent explanation of the experimental observations than the D-A model. The 2.3 eV case is marginal, where the key argument against the D-A recombination is the improbably low probability of tunneling between remote donors and acceptors in diamonds with very low concentrations of impurities (~0.1 ppm). A more realistic model for the 2.3 eV band and the associated phosphorescence and thermoluminescence phenomena is trapping of electrons and holes at nitrogen and boron defects, respectively, followed by recombination at a deep center, which is tentatively assigned to the nearest neighbor B-N pair.
ER  -