Accelerated stressing of CdS/CdTe solar cells at elevated temperatures (60-100°C) under a range of applied bias in light and dark has identified three degradation modes: formation of a blocking contact, increased junction recombination, and increased dark resistivity. Devices with Cu-contacts degrade with a strong bias dependence. The blocking contact is formed under forward bias. Junction degr...

We know by Weierstrass’s theorem that any continuous function on a compact interval can be approximated uniformly by polynomials. With this result in mind, one may inquire about similar approximations in complex analysis. More precisely, we ask the following question: what conditions on a compact set K ⊂ C guarantee that any function holomorphic in a neighborhood of this set can be approximated...

Hofmann and Morris [6] proved that a locally compact connected group G has a finite subset generating a dense subgroup if and only if the weight w(G) of G does not exceed c , the cardinality of the continuum. The minimum cardinality of such a topological generating set is an invariant of the group, is denoted by σ(G), and is called the topological rank of G . For compact abelian groups of weigh...

We present the first nearly atomistic molecular dynamics study of nanorod-nanorod association in explicit solvent, showing that inter-rod forces can be dominated by microscopic factors absent in common continuum descriptions. Specifically, we find that alkane ligands on faceted CdS nanorods in n-hexane undergo a temperature-dependent order-disorder transition akin to that of self-assembled mono...

Associated to each set S of simple roots for SL(n, C) is an equivariant fibration X → XS of the space X of complete flags of C n. To each such fi-bration we associate an algebra JS of operators on L 2 (X) which contains, in particular, the longitudinal pseudodifferential operators of negative order tangent to the fibres. These form a lattice of operator ideals whose common intersection is the c...

Associated to each set S of simple roots for SL(n, C) is an equivariant fibration X → XS of the space X of complete flags of C n. To each such fi-bration we associate an algebra JS of operators on L 2 (X) which contains, in particular, the longitudinal pseudodifferential operators of negative order tangent to the fibres. These form a lattice of operator ideals whose common intersection is the c...

This paper discusses computational complexity of conceptual successive convex relaxation methods proposed by Kojima and Tunn cel for approximating a convex relaxation of a compact subset F = fx 2 C 0 : p(x) 0 (8p() 2 P F)g of the n-dimensional Euclidean space R n. Here C 0 denotes a nonempty compact convex subset of R n , and P F a set of nitely or innnitely many quadratic functions. We evaluat...