Characterization of InGaSb/GaSb p-n photodetectors in the 1.0- to 2.4-µm wavelength range

Tamer F. Refaat; M. Nurul Abedin; Ishwara B. Bhat; Partha S. Dutta; Upendra N. Singh

doi:10.1117/1.1695566

1 May 2004 Characterization of InGaSb/GaSb p-n photodetectors in the 1.0- to 2.4-µm wavelength range

Tamer F. Refaat; M. Nurul Abedin; Ishwara B. Bhat; Partha S. Dutta; Upendra N. Singh

Author Affiliations +

Optical Engineering, 43(5), (2004). https://doi.org/10.1117/1.1695566

Abstract

Optical and electrical characteristics of InGaSb p-n photodetectors are presented at different temperatures. The device structures were grown on GaSb substrates using organic metal vapor phase epitaxy. Spectral calibration indicates peak responsivity around 2 µm, equivalent to 58% quantum efficiency, with 2.3-µm cutoff at room temperature. Reducing the device temperature increases the responsivity and shifts the cutoff wavelength to a shorter value. Current voltage measurements at different temperatures indicate that tunneling is the primary leakage current mechanism. Assuming Johnson limited performance, detectivity calculations resulted in 4×1010 cm Hz1/2/W indicating that InGaSb is a superior material for 2-µm detection applications.

Citation Download Citation

Tamer F. Refaat, M. Nurul Abedin, Ishwara B. Bhat, Partha S. Dutta, Upendra N. Singh, "Characterization of InGaSb/GaSb p-n photodetectors in the 1.0- to 2.4-µm wavelength range," Optical Engineering 43(5), (1 May 2004). https://doi.org/10.1117/1.1695566

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years