“Property Phase Diagrams” for Compound Semiconductors through Data Mining

doi:10.3390/ma6010279

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Materials 2013, 6(1), 279-290; doi:10.3390/ma6010279

Article

“Property Phase Diagrams” for Compound Semiconductors through Data Mining

Srikant Srinivasan and Krishna Rajan*

Combinatorial Sciences and Materials Informatics Collaboratory, Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA

* Author to whom correspondence should be addressed.

Received: 10 December 2012; in revised form: 10 January 2013 / Accepted: 15 January 2013 / Published: 21 January 2013

(This article belongs to the Special Issue Compound Semiconductor Materials)

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Abstract: This paper highlights the capability of materials informatics to recreate “property phase diagrams” from an elemental level using electronic and crystal structure properties. A judicious selection of existing data mining techniques, such as Principal Component Analysis, Partial Least Squares Regression, and Correlated Function Expansion, are linked synergistically to predict bandgap and lattice parameters for different stoichiometries of Ga_xIn_1−xAs_ySb_1−y, starting from fundamental elemental descriptors. In particular, five such elemental descriptors, extracted from within a database of highly correlated descriptors, are shown to collectively capture the widely studied “bowing” of energy bandgaps seen in compound semiconductors. This is the first such demonstration, to our knowledge, of establishing relationship between discrete elemental descriptors and bandgap bowing, whose underpinning lies in the fundamentals of solid solution thermodyanamics.

Keywords: III–V materials; semiconductor compounds; bandgap engineering; crystal stoichiometry; structure-property relationships; phase diagrams; high dimensional data; data mining; materials informatics

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MDPI and ACS Style

Srinivasan, S.; Rajan, K. “Property Phase Diagrams” for Compound Semiconductors through Data Mining. Materials 2013, 6, 279-290.

AMA Style

Srinivasan S, Rajan K. “Property Phase Diagrams” for Compound Semiconductors through Data Mining. Materials. 2013; 6(1):279-290.

Chicago/Turabian Style

Srinivasan, Srikant; Rajan, Krishna. 2013. "“Property Phase Diagrams” for Compound Semiconductors through Data Mining." Materials 6, no. 1: 279-290.

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