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Charge carrier accumulation in lithium fluoride thin films due to Li-ion absorption by titania (100) subsurface.

Nano letters (2012-02-07)
Chilin Li, Lin Gu, Xiangxin Guo, Dominik Samuelis, Kun Tang, Joachim Maier
ABSTRACT

The thermodynamically required redistribution of ions at given interfaces is being paid increased attention. The present investigation of the contact LiF/TiO(2) offers a highly worthwhile example, as the redistribution processes can be predicted and verified. It consists in Li ion transfer from LiF into the space charge zones of TiO(2). We not only can measure the resulting increase of lithium vacancy conductivity in LiF, we also observe a transition from n- to p-type conductivity in TiO(2) in consistency with the generalized space charge model.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Lithium fluoride, ≥99.99% trace metals basis
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