Monolithic photovoltaic PbS-on-Si infrared-sensor array
- 1 January 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Electron Device Letters
- Vol. 11 (1) , 12-14
- https://doi.org/10.1109/55.46915
Abstract
The growth of epitaxial narrow-gap PbS-on-Si substrates using a stacked CaF/sub 2/-BaF/sub 2/ intermediate buffer layer and the fabrication of linear arrays of photovoltaic infrared (IR) sensors in the PbS layer are discussed. The sensors of the array exhibit resistance-area products at zero bias of 3 Omega -cm/sup 2/ at 200 K (3.4- mu m cutoff wavelength) and 2*10/sup 5/ Omega -cm/sup 2/ at 84 K (4- mu m cutoff), with corresponding detectivities of 2*10/sup 10/ and 1*10/sup 13/ cm- square root Hz/W, respectively.<>Keywords
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