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Title: Incorporation of liquid crystalline triphenylene derivative in bulk heterojunction solar cell with molybdenum oxide as buffer layer for improved efficiency
Authors: Bajpai, Manisha
Yadav, Neelam
Kumar, Sandeep
Srivastava, Ritu
Dhar, Ravindra
Keywords: Discotic liquid crystal
bulk heterojunction
optical band gap
current density
Issue Date: 8-Mar-2016
Publisher: Taylor & Francis
Citation: Liquid Crystals, 2016, Vol.43, p928-936
Abstract: We report efficient bulk heterojunction solar cells fabricated by inserting a discotic triphenylene derivative into poly (3-hexylthiophene): [6, 6]- phenyl-C61-butyric acid methyl ester. A layer of molybdenum oxide was inserted between anode and active layer. Power conversion efficiency of 2.0% was achieved for these photovoltaic solar cells containing self-organised discotic liquid crystals in the active layer under one sun condition. The influence of varying the thickness of liquid crystal layer and annealing on these solar cells was also studied. Post annealing the bulk heterojunction devices with discotic liquid crystal layer of thickness 20 nm in them yielded an open circuit voltage of 0.41 V, short circuit current density of 17.0 mA cm−2, a Fill factor of 0.35 and power conversion efficiency of 2.5%.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (Online)
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Copyright: 2016 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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