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Controlling Interdiffusion, Interfacial Composition, and Adhesion in Polymer Solar Cells
Author(s) -
Dupont Stephanie R.,
Voroshazi Eszter,
Nordlund Dennis,
Vandewal Koen,
Dauskardt Reinhold H.
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201400135
Subject(s) - pedot:pss , materials science , annealing (glass) , composition (language) , electrode , organic solar cell , polymer , chemical engineering , nanotechnology , composite material , chemistry , philosophy , linguistics , engineering
NEXAFS spectroscopy is used to precisely quantify the interfacial composition and P3HT chain orientation at the weak P3HT:PCBM/PEDOT:PSS interface. An increase of P3HT:PCBM and PEDOT:PSS interdiffusion with post electrode deposition annealing time and temperature is found to be the underlying mechanism for effectively improving the interlayer adhesion, which is essential for the commercial realization of organic photovoltaic devices.