Surface Leakage Suppression in LWIR Type-II Superlattice Photodetectors Using Electrical Gating Technique

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$124,902.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
NNX13CG15P
Agency Tracking Number:
124022
Solicitation Year:
2012
Solicitation Topic Code:
S1.03
Solicitation Number:
n/a
Small Business Information
MP Technologies, LLC
IL, Evanson, IL, 60208-3150
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
Y
Duns:
129503988
Principal Investigator:
Ryan McClintock
Technical DIrector
(847) 491-7208
rmcclin@gmail.com
Business Contact:
Manijeh Razeghi
President
(847) 491-7208
mpt1pnc6@yahoo.com
Research Institution:
Stub




Abstract
High performance LWIR detectors are highly needed. In order to image from long distance, it is important that imagers have high sensitivity, high resolution, and very low dark currents. This leads to technical goals of having low noise, low dark current in small size pixels in large arrays. While saturated performance levels of traditional systems based on bulk semiconductors have not quite met the requirement of applications, it is expected that novel quantum systems will bring new development stage for infrared imagers.In recent years, Type-II InAs/GaSb superlattice (T2SL) has experienced significant development, from theoretical modeling, material growth to device processing and packaging. Performance of LWIR detector based on T2SL has become comparable, even better than that of HgCdTe. However, LWIR T2SL devices have been shown to be limited by surface leakage, especially at lower operating temperature.This proposed effort will investigate gating of Type-II photodiodes as a means to suppress this bottle neck of T2SL technology. The ultimate goal of this project is to develop an effective method to completely suppress the surface leakage current in LWIR type-II superlattice photodiodes that is compatible with the development of high performance gated FPAs in Phase II.

* information listed above is at the time of submission.

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