[HTML][HTML] Stability of low-carrier-density topological-insulator Bi2Se3 thin films and effect of capping layers

M Salehi, M Brahlek, N Koirala, J Moon, L Wu… - APL Materials, 2015 - pubs.aip.org
Although over the past number of years there have been many advances in the materials
aspects of topological insulators (TIs), one of the ongoing challenges with these materials is
the protection of them against aging. In particular, the recent development of low-carrier-
density bulk-insulating Bi 2 Se 3 thin films and their sensitivity to air demands reliable
capping layers to stabilize their electronic properties. Here, we study the stability of the low-
carrier-density Bi 2 Se 3 thin films in air with and without various capping layers using DC …
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