期刊
NANO ENERGY
卷 36, 期 -, 页码 260-267出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.04.044
关键词
Dye-sensitized solar cell; Conducting polymer; Flexible electrode; Graphene dots; Paper electrode; Metal-free counter electrode
类别
资金
- King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) [OSR-2016-CRG5-3005]
- KAUST solar center [FCC/1/3079-08-01]
- KAUST baseline funding
- Research Grants Council of Hong Kong [PolyU 153012/14P]
- National Natural Science Foundation of China [11374250]
- National Taiwan University [102R4000]
We have synthesized a metal-free composite ink that contains graphene dots (GDs) and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) that can be used on paper to serve as the counter electrode in a flexible dye-sensitized solar cell (DSSC). This paper-based GD/PEDOT:PSS electrode is low-cost, light-weight, flexible, environmentally friendly, and easy to cut and process for device fabrication. We determined the GD/PEDOT:PSS composite effectively fills the dense micro-pores in the paper substrate, which leads to improved carrier transport in the electrode and a 3-fold enhanced cell efficiency as compared to the paper electrode made with sputtered Pt. Moreover, the DSSC with the paper electrode featuring the GD/PEDOT:PSS composite did not fail in photovoltaic tests even after bending the electrode 150 times, whereas the device made with the Pt-based paper electrode decreased in efficiency by 45% after such manipulation. These exceptional properties make the metal-free GD/PEDOT:PSS composite ink a promising electrode material for a wide variety of flexible electronic applications.
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