Premium
Lifetimes of organic photovoltaics: photooxidative degradation of a model compound
Author(s) -
Norrman Kion,
Alstrup Jan,
Jørgensen Mikkel,
Krebs Frederik C.
Publication year - 2006
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2450
Subject(s) - oligomer , degradation (telecommunications) , photovoltaics , x ray photoelectron spectroscopy , chemistry , photochemistry , molecule , organic solar cell , chemical engineering , polymer chemistry , polymer , organic chemistry , photovoltaic system , telecommunications , ecology , computer science , engineering , biology
A poly phenylene vinylene (PPV‐type) oligomer used in organic photovoltaics was designed to facilitate the interpretation of mass spectral data. A film of the oligomer was subjected to various degrees of illumination (1000 W m −2 , AM1.5) in air resulting in photooxidation of the material. The surface chemistry was monitored by TOF‐SIMS and XPS. The experiment described accelerated photooxidation without any contributions from interface processes. The photooxidative degradation mechanisms are described starting from the intact molecule through presumably, intermediate photooxidation products to small photooxidation products. The processes are described with various degrees of specificity and with varying degrees of detail. Copyright © 2006 John Wiley & Sons, Ltd.