We report on the design, fabrication, and measurement of ultrathin film a-Si:H solar cells with nanostructured plasmonic back contacts, which demonstrate enhanced short circuit current densities compared to cells having flat or randomly textured back contacts. The primary photocurrent enhancement occurs in the spectral range from 550 nm to 800 nm. We use… (More)
Methods are known for the exact computation of the solution of integer systems of linear equations <italic>AX</italic> = <italic>B</italic> with a nonsingular coefficient matrix <italic>A</italic> by congruence techniques. These methods are now generalized for systems with an arbitrary integer coefficient matrix <italic>A</italic>. To make congruence… (More)
This package complements [l], where the algorithmic and mathematical details are given. REFERENCE 1. SPRINGER, J. Exact solution of general integer systems of linear equations. ACM 2'ran.s. Math.