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53.3: Influence of Material Purification by Vacuum Sublimation on Organic Optoelectronic Device Performance
Author(s) -
Drechsel J.,
Petrich A.,
Koch M.,
Pfützner S.,
Meerheim R.,
Scholz S.,
Drechsel J.,
Walzer K.,
Pfeiffer M.,
Leo K.
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433332
Subject(s) - sublimation (psychology) , impurity , electroluminescence , materials science , optoelectronics , organic semiconductor , nanotechnology , chemistry , organic chemistry , psychology , layer (electronics) , psychotherapist
In organic optoelectronic devices, in particular organic solar cells and organic electroluminescent devices, reduction of impurities is a critical issue. A frequently used process for oligomers (small‐molecules) is sublimation. We demonstrate that the sublimation process is effective to purify organic molecular compounds. Examples are shown for simplified device structures that allow easy evaluation of the impurity effect. New compact vacuum sublimation systems have been developed to process and handle material volumes in excess of 200 cm 3 .