Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1895
Title: Interface engineering for efficient fullerene-free organic solar cells
Authors: Shivanna, Ravichandran
Rajaram, Sridhar
Narayan, K. S.
Keywords: Applied Physics
Conversion Efficiency
Highly Efficient
Thin-Films
Polymer
Photovoltaics
Layer
ZnO
Fabrication
Interlayer
Acceptors
Issue Date: 2015
Publisher: American Institute of Physics
Citation: Applied Physics Letters
106
12
Shivanna, R.; Rajaram, S.; Narayan, K. S., Interface engineering for efficient fullerene-free organic solar cells. Applied Physics Letters 2015, 106 (12), 5.
Abstract: We demonstrate the role of zinc oxide (ZnO) morphology and addition of an acceptor interlayer to achieve high efficiency fullerene-free bulk heterojunction inverted organic solar cells. Nanopatterning of the ZnO buffer layer enhances the effective light absorption in the active layer, and the insertion of a twisted perylene acceptor layer planarizes and decreases the electron extraction barrier. Along with an increase in current homogeneity, the reduced work function difference and selective transport of electrons prevent the accumulation of charges and decrease the electron-hole recombination at the interface. These factors enable an overall increase of efficiency to 4.6%, which is significant for a fullerene-free solution-processed organic solar cell. (C) 2015 AIP Publishing LLC.
Description: Restricted access
URI: http://hdl.handle.net/10572/1895
ISSN: 0003-6951
Appears in Collections:Research Articles (Narayan K. S.)

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