Broken-gap quantum-well tunnel junctions grown on GaSb substrates

Matthew P. Lumb; Shawn Mack; Maria Gonzalez; Kenneth J. Schmieder; Mitchell F. Bennett; Chaffra A. Affouda; James E. Moore; Robert J. Walters

doi:10.1117/1.JPE.7.032501

21 August 2017 Broken-gap quantum-well tunnel junctions grown on GaSb substrates

Matthew P. Lumb, Shawn Mack, Maria Gonzalez, Kenneth J. Schmieder, Mitchell F. Bennett, Chaffra A. Affouda, James E. Moore, Robert J. Walters

Author Affiliations +

Journal of Photonics for Energy, Vol. 7, Issue 3, 032501 (August 2017). https://doi.org/10.1117/1.JPE.7.032501

Abstract

A tunnel junction has been developed with an application to multijunction solar cells grown on GaSb and analyzed using a combination of electrical device measurements and modeling. The device employs an InAs quantum well embedded in a GaSb p/n junction, exploiting the high tunnel probability at the broken-gap interface between p-type GaSb and n-type InAs and having a minimal impact on the transparency of the device. The concept is extended to wider bandgap heterointerfaces using Al0.2Ga0.8Sb, achieving a differential resistance of 4.08×10−4 Ω cm2.

Citation Download Citation

Matthew P. Lumb, Shawn Mack, Maria Gonzalez, Kenneth J. Schmieder, Mitchell F. Bennett, Chaffra A. Affouda, James E. Moore, and Robert J. Walters "Broken-gap quantum-well tunnel junctions grown on GaSb substrates," Journal of Photonics for Energy 7(3), 032501 (21 August 2017). https://doi.org/10.1117/1.JPE.7.032501

Received: 24 March 2017; Accepted: 21 July 2017; Published: 21 August 2017

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