Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43903
Title: Economical low-light photovoltaics by using the Pt-free dye-sensitized solar cell with graphene dot/PEDOT : PSS counter electrodes
Authors: Lee, CP
Lin, CA
Wei, TC
Tsai, ML
Meng, Y
Li, CT
Ho, KC
Wu, CI
Lau, SP 
He, JH
Keywords: Conducting polymer
Dye-sensitized solar cell
Graphene quantum dots
Low light
Platinum-free counter electrode
Issue Date: 2015
Publisher: Elsevier
Source: Nano energy, 2015, v. 18, p. 109-117 How to cite?
Journal: Nano energy 
Abstract: Graphene dots (GDs) are used for enhancing the performance of the poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS)-based counter electrodes in Pt-free dye-sensitized solar cells (DSSCs). As compared to PEDOT:PSS CEs, GD-PEDOT:PSS films possess a rough surface morphology, high conductivity and electrocatalytic activity, and low charge-transfer resistance toward I-/I3 - redox reaction, pushing cell efficiency to 7.36%, which is 43% higher than that of the cell with PEDOT:PSS CEs (5.14%). Without much impact on efficiency, the DSSCs with GD-PEDOT:PSS CEs work well under low-light conditions (light intensity <13.5mWcm-2 and angle of incidence >60°), such as indoor and low-level outdoor lighting and of the sun while the other traditional cells would fail to work. The concurrent advantage in low cost in Pt-free materials, simple fabrication processes, comparable efficiency with Pt CEs, and high performance under low-light conditions makes the DSSC with GD-PEDOT:PSS CEs suitable to harvest light for a diverse range of indoor and low-level outdoor lighting locations.
URI: http://hdl.handle.net/10397/43903
ISSN: 2211-2855
EISSN: 2211-3282
DOI: 10.1016/j.nanoen.2015.10.008
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