Strain-enhanced doping in semiconductors: effects of dopant size and charge state

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Publication Type Journal Article
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Stringfellow, Gerald B.
Other Author Zhu, Junyi; Liu, Feng; Wei, Su-Huai
Title Strain-enhanced doping in semiconductors: effects of dopant size and charge state
Date 2010-11
Description When a semiconductor host is doped by a foreign element, it is inevitable that a volume change will occur in the doped system. This volume change depends on both the size and charge state difference between the dopant and the host element. Unlike the ‘‘common expectation'' that if the host is deformed to the same size as the dopant, then the formation energy of the dopant would reach a minimum, our first principles calculations discovered that when an external hydrostatic strain is applied, the change of the impurity formation energy is monotonic: it decreases if the external hydrostatic strain is applied in the same direction as the volume change. This effect also exists when a biaxial strain is applied. A simple strain model is proposed to explain this unusual behavior, and we suggest that strain could be used to significantly improve the doping solubility in semiconductor systems.
Type Text
Publisher American Physical Society
Journal Title Physical Review Letters
Volume 105
Issue 19
First Page 195503
Last Page 195501
DOI 10.1103/PhysRevLett.105.195503
citatation_issn 0031-9007
Language eng
Bibliographic Citation Zhu, J., Liu, F., Stringfellow, G. B., & Wei, S.-H. (2010). Strain-enhanced doping in semiconductors: Effects of dopant size and charge state. Physical Review Letters, 105(19), 195503-1-4.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.105.195503 Reprinted from Zhu, J., Liu, F., Stringfellow, G. B., & Wei, S.-H. (2010). Strain-enhanced doping in semiconductors: Effects of dopant size and charge state. Physical Review Letters, 105 (19), art. no. 195503.
Format Medium application/pdf
Format Extent 218,419 bytes
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6j96r0z