Publications [#66837] of Adrienne D. Stiff-Roberts

Papers Published

1. Krishna, S. and Stiff-Roberts, A.D. and Phillips, J.D. and Bhattacharya, P. and Kennerly, S.W., Hot dot detectors, IEEE Circuits and Devices Magazine, vol. 18 no. 1 (2002), pp. 14 - 24
   (last updated on 2007/04/16)

   Abstract:
   The properties of normal-incidence, high-temperature, mid-wavelength IR, InAs/GaAs vertical QDIPs with and without an Al_0.3Ga_0.7As current-blocking barrier are discussed. These devices demonstrate very high D* values (D* [similar to] 3 × 10⁹ cmHz^1/2/W at T = 100 K and V_bias = 0.2 V) and high operating temperatures (150 K) for normal-incidence vertical QDIPs. The devices are also unique in that their high performance at low bias demonstrates their suitability for incorporation in an FPA that uses commercially available silicon read-out circuits.

   Keywords:
   Infrared detectors;Semiconductor quantum dots;Self assembly;Semiconducting gallium arsenide;Molecular beam epitaxy;Interfacial energy;Luminescence;Atomic force microscopy;Transmission electron microscopy;Electron energy levels;