Nanoscale Characterization of Tetrabenzoporphyrin and Fullerene-Based Solar Cells by Photoconductive Atomic Force Microscopy

The subtle role of molecular design in determining organic photovoltaic performance performance is demonstrated with the aid of photoconductive atomic force microscopy. Each layer of OPV devices with a p/i/n architecture containing BP and PCBM or PCBNB is characterized using conducting and photocond...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2011-05, Vol.23 (20), p.2313-2319
Main Authors: Guide, Michele, Dang, Xuan-Dung, Nguyen, Thuc-Quyen
Format: Article
Language:English
Subjects:
Electrodes
film morphology
Fullerenes - chemistry
Microscopy, Atomic Force
nanoscale IPCE
Nanotechnology
organic photovoltaics
photoconductive atomic force microscopy
Porphyrins - chemistry
Quantum Theory
Solar Energy
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Summary:The subtle role of molecular design in determining organic photovoltaic performance performance is demonstrated with the aid of photoconductive atomic force microscopy. Each layer of OPV devices with a p/i/n architecture containing BP and PCBM or PCBNB is characterized using conducting and photoconducting AFM to gain insight as to why these devices perform differently in the bulk. The results illustrate how a slight change in the chemical structure of the layers can have a large impact in the film morphology, phase separation, and the device performance.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201003644