Band structure calculations show that substitutional lithium in bismuth can form sharp density of states peaks close to the Fermi energy, suggesting the presence of a resonant level, whereas interstitial lithium is expected to act as a simple donor impurity. Experimentally, polycrystalline elemental bismuth samples doped with 0.3%, 0.7%, 1.5%, 3%, 14% (a eutectic composition between Bi and the tetragonal intermetallic compound BiLi), and 20% lithium were prepared. Single-crystal and polycrystalline Bi88Sb12 samples were also doped with lithium. The thermal and thermoelectric transport data of those compounds are reported. The data are consistent with lithium being a donor, leading to the conclusion that it is an interstitial impurity. The thermal conductivity of Bi decreases with Li content at low concentrations, but that of the Bi/BiLi eutectic composition shows the highest value.
This is a preview of subscription content, log in to check access.
Buy single article
Instant unlimited access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
P. Jandl and U. Birkholz, J. Appl. Phys. 76, 7351 (1994).
J.M. Noothoven van Goor, Philips Res. Rep. Suppl. 4, 1 (1971).
M. Hansen and K. Anderko, Constitution of Binary Alloys (New York: McGraw Hill, 1958).
A. Bansil, S. Kaprzyk, P.E. Mijnarends, and J. Tobola, Phys. Rev. B 60, 13396 (1999).
T. Stopa, S. Kaprzyk, and J. Tobola, J. Phys. Condens. Matter 16, 4921 (2004).
P. Cucka and C.S. Barrett, Acta Crystallogr. 15, 865 (1962).
C.M. Jaworski, B. Wiendlocha, V. Jovovic, and J.P. Heremans, Energy Environ. Sci. 4, 4155 (2011).
About this article
Cite this article
Orovets, C.M., Chamoire, A.M., Jin, H. et al. Lithium as an Interstitial Donor in Bismuth and Bismuth–Antimony Alloys. Journal of Elec Materi 41, 1648–1652 (2012) doi:10.1007/s11664-011-1861-0
- Bi1−x Sb x alloys
- resonant levels