Controlled nanostructuring of CuPc thin films via glancing angle deposition for idealized organic photovoltaic architectures

Download
  1. Get@NRC: Controlled nanostructuring of CuPc thin films via glancing angle deposition for idealized organic photovoltaic architectures (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1039/c0jm03026k
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Materials Chemistry
ISSN0959-9428
Volume21
Issue4
Pages10131019; # of pages: 7
SubjectCrystal grain size; Device geometries; Exciton diffusion length; Glancing angle deposition; Metalphthalocyanines; Nano-structuring; Nanocolumn; Nanostructured copper; Oblique-angle deposition; Organic photovoltaics; PEDOT:PSS; Photoconversion efficiency; Porous film; Small molecules; Surface area; Nitrogen compounds; Photovoltaic effects; Substrates; Thin films; Vapor deposition; Film growth
AbstractWe report on the optimization of nanostructured copper phthalocyanine (CuPc) thin films for idealized organic photovoltaic (OPV) architectures using advanced substrate motion and periodic seeding. Oblique angle deposition (OAD), a subset of glancing angle deposition (GLAD), has recently been used to enhance small molecule OPV device photoconversion efficiency by increasing the surface area of metal phthalocyanine (MPc) thin films. Here we report a detailed study of how to direct MPc film growth towards the ideal donor morphology using the techniques available to GLAD. Porous films of columnar CuPc nanostructures were achieved with strong control over the diameter, spacing and height of the columns. Special emphasis was placed on limiting column broadening as the film thickness, and resulting light absorption, was increased. Columns were grown on PEDOT:PSS coated ITO substrates to hundreds of nanometers in length while maintaining diameters of 40-50 nm and crystal grain sizes of 15-30 nm. Additionally, we provide the first demonstration of periodically seeded organic nanocolumn growth. These methods enable fabrication of uniform columnar MPc films engineered specifically for the short exciton diffusion lengths in these materials, making them suitable for ideal OPV device geometries. © 2011 The Royal Society of Chemistry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology
Peer reviewedYes
NPARC number21271928
Export citationExport as RIS
Report a correctionReport a correction
Record identifiere65efb0f-1ec3-4502-a430-224e2169b9a6
Record created2014-05-06
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)