Publications by authors named "Shannon M McCullough"
Site-Selective Passivation of Defects in NiO Solar Photocathodes by Targeted Atomic Deposition.
ACS Appl Mater Interfaces
February 2016
Article Synopsis
- Surface chemistry greatly influences the properties of nanomaterials, impacting charge-carrier lifetimes and electrical performance, especially in solar energy devices.
- A new technique called targeted atomic deposition (TAD) selectively passivates surface defects in semiconductor nanomaterials, improving their efficiency.
- The TAD process successfully eliminated defects in nickel oxide, resulting in nearly a 3-fold boost in dye-sensitized solar cell performance, indicating its potential application across various nanomaterials.
The synthesis, X-ray structures and photophysics of ten complexes of CuX (X = I or Br) with bridging N-substituted and N,N'-disubstituted piperazines (Pip) are presented. Depending on the steric demand of the Pip substituents, the complexes fall into four categories: (CuX)(4)(Pip)(2), which are networks of linked Cu(4)X(4) cubane units, (CuX)(2)(Pip), which are chains of linked Cu(2)X(2) rhombs, and (CuX)(2)(Pip)(2) or (CuX)(4)(Pip)(4), which are simple rhomboid dimers and cubane tetramers. A combination of spectroscopic studies and DFT calculations was used to investigate the luminescence of the products.
View Article and Find Full Text PDFA series of metal-organic networks of CuSCN were prepared by direct reactions with substituted pyridine and aliphatic amine ligands, L. Thiocyanate bridging is seen in all but 1 of 11 new X-ray structures. Structures are reported for (CuSCN)L sheets (L = 3-chloro- and 3-bromopyridine, N-methylmorpholine), ladders (L = 2-ethylpyridine, N-methylpiperidine), and chains (L = 2,4,6-collidine).
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