Computer Science – Performance
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3629...74j&link_type=abstract
Proc. SPIE Vol. 3629, p. 74-80, Photodetectors: Materials and Devices IV, Gail J. Brown; Manijeh Razeghi; Eds.
Computer Science
Performance
4
Scientific paper
We analyze numerically properties of small-size infrared photovoltaic devices based on complex two-dimensional Hg(subscript 1- x)Cd(subscript x)Te heterostructures. An original iteration scheme was used to solve the system of nonlinear continuity equations and the Poisson equation. All quantities are expressed as functions of electric potential and Fermi quasi-levels. The results of calculations are presented as the maps showing spatial distribution of sensitivity and density of noise generation for 4 types of heterostructures. In addition, resulting parameters of the devices are summarized in the table. This approach may help to understand specific features of the heterostructural devices and optimize their performance. The simulations show viability of constructing devices with active region buried inside a wide gap material where existing potential barriers prevent adverse effects of both recombination of photogenerated carriers and thermal generation at surfaces, interfaces and contacts.
Adamiec Krzysztof
Jozwikowski Krzysztof
Piotrowski Jozef
Rogalski Antoni
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