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Electronic Studies on Oligothienylenevinylenes: Understanding the Nature of Their Ground and Excited Electronic States
Author(s) -
Ponce Ortiz Rocío,
González Sandra R.,
Casado Juan,
López Navarrete Juan T.,
Officer David L.,
Wagner Pawel,
Earles John C.,
Gordon Keith C.
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900140
Subject(s) - excited state , raman spectroscopy , electronic structure , chemical physics , photochemistry , charge (physics) , chemistry , materials science , charge carrier , optoelectronics , atomic physics , computational chemistry , physics , optics , quantum mechanics
The electronic and molecular structures of a family of oligothienylenevinylenes for organic solar cells are studied by means of UV/Vis, fluorescence and Raman spectroscopy, aided by quantum chemical calculations. By using different anchoring groups, the alteration of the electronic properties upon inserting electron‐withdrawing groups into different positions on the oligothienylenevinylene backbone is determined. In addition, a thorough study of the photophysical properties is carried out to understand their potential use in optoelectronic devices. The charge defect of one of these systems is analysed to elucidate the possible charge carriers photogenerated during device operation.