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Increasing the equilibrium solubility of dopants in semiconductor multilayers and alloys
Uppsala universitet, Sweden.
Uppsala universitet, Sweden.
Uppsala universitet, Sweden.ORCID iD: 0000-0001-6790-6569
Uppsala universitet, Sweden.
2008 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 100, no 10, p. 105501-Article in journal (Refereed) Published
Abstract [en]

We have theoretically studied the possibility to control the equilibrium solubility of dopants in semiconductor alloys, by strategic tuning of the alloy concentration. From the modeled cases of C-0 in SixGe1-x, Zn- and Cd- in GaxIn1-xP it is seen that under certain conditions the dopant solubility can be orders of magnitude higher in an alloy or multilayer than in either of the elements of the alloy. This is found to be due to the solubility's strong dependence on the lattice constant for size mismatched dopants. The equilibrium doping concentration in alloys or multilayers could therefore be increased significantly. More specifically, Zn- in a GaxIn1-xP multilayer is found to have a maximum solubility for x=0.9, which is 5 orders of magnitude larger than that of pure InP.

Place, publisher, year, edition, pages
2008. Vol. 100, no 10, p. 105501-
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:mdh:diva-61309DOI: 10.1103/PhysRevLett.100.105501ISI: 000254024500039Scopus ID: 2-s2.0-40849142315OAI: oai:DiVA.org:mdh-61309DiVA, id: diva2:1719667
Available from: 2007-05-15 Created: 2022-12-15Bibliographically approved

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Eriksson, OlleCastleton, ChristopherMirbt, Susanne

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