Impact of selective thermal annealing on rubrene-C-60 heterojunction solar cells

Pandey, Ajay K. and Nunzi, Jean-Michel (2012) Impact of selective thermal annealing on rubrene-C-60 heterojunction solar cells. Synthetic Metals, 162 23: 2171-2175. doi:10.1016/j.synthmet.2012.10.005


Author Pandey, Ajay K.
Nunzi, Jean-Michel
Title Impact of selective thermal annealing on rubrene-C-60 heterojunction solar cells
Journal name Synthetic Metals   Check publisher's open access policy
ISSN 0379-6779
Publication date 2012-12-01
Sub-type Article (original research)
DOI 10.1016/j.synthmet.2012.10.005
Volume 162
Issue 23
Start page 2171
End page 2175
Total pages 5
Place of publication Lausanne, Switzerland
Publisher Elsevier
Language eng
Formatted abstract
The influence of thermal annealing at different fabrication stages on rubrene-C60 heterojunction organic solar cells is presented. Devices grown at room temperature showed s-shaped current density-voltage (J-V) characteristic. A pre- or post-fabrication thermal treatment step is found effective in elimination of s-shaped J-V. An exclusive gain in open-circuit voltage was measured when rubrene-C60 layer was fabricated at elevated substrate temperature of 80 °C. The results indicate that introduction of temperature at various stage of device fabrication allows selective control over organic layer growth and hence organic-organic interface formation. The 133 mV increase in open-circuit voltage in solar cells fabricated at substrate temperature is due to temperature induced molecular conformation change at the light in-coupling ITO/PEDOT interface.
Keyword Molecular conformation
Organic-organic interface
Organic solar cells
Thermal annealing
Substrate temperature
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2013 Collection
School of Chemistry and Molecular Biosciences
 
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