Flexibility properties of type-II InAs/GaSb SL to design MWIR pin photodiodes

P. Christol; M. Delmas; J. B. Rodriguez; E. Giard; I. Ribet-Mohamed; J. Imbert; S. Derelle; V. Trinité

doi:10.1117/12.2076569

8 February 2015 Flexibility properties of type-II InAs/GaSb SL to design MWIR pin photodiodes

P. Christol, M. Delmas, J. B. Rodriguez, E. Giard, I. Ribet-Mohamed, J. Imbert, S. Derelle, V. Trinité

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 93701Z (2015) https://doi.org/10.1117/12.2076569
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

InAs/GaSb superlattice (SL) is a peculiar quantum system for infrared detection, where electrical and optical properties are directly governed by the composition and the periodicity of the InAs/GaSb cell. Indeed, several structures with different InAs to GaSb thickness ratios in each SL period, can target the same cut-off wavelength. Likewise, the type of conductivity of the non-intentionally doped SL structure is also linked to the InAs/GaSb SL period. The objective of this communication is to use the flexibility properties of InAs/GaSb SL to design and then to fabricate by MBE a pin photodiode where the active zone is made of different SL periods. Electrical and electro-optical characterizations are reported. The results show that SL structure for the MWIR domain can be designed by combining the best of each SL periods.

Citation Download Citation

P. Christol, M. Delmas, J. B. Rodriguez, E. Giard, I. Ribet-Mohamed, J. Imbert, S. Derelle, and V. Trinité "Flexibility properties of type-II InAs/GaSb SL to design MWIR pin photodiodes", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93701Z (8 February 2015); https://doi.org/10.1117/12.2076569

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