Iodine vapor doped polyaniline nanoparticles counter electrodes for dye-sensitized solar cells
- Authors
- Lee, Young Woo; Do, Kwangseok; Lee, Tae Hyun; Jeon, Sang Soo; Yoon, Won Jae; Kim, Chulwoo; Ko, Jaejung; Im, Seung Soon
- Issue Date
- 15-6월-2013
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Dye-sensitized solar cell; Counter electrode; Polyaniline; Iodine doping
- Citation
- SYNTHETIC METALS, v.174, pp.6 - 13
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 174
- Start Page
- 6
- End Page
- 13
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/102960
- DOI
- 10.1016/j.synthmet.2013.04.009
- ISSN
- 0379-6779
- Abstract
- In this study, we demonstrated the enhanced efficiency of dye-sensitized solar cells (DSSCs) using iodine vapor-doped nanostructured polyaniline (PANI)-based counter electrodes (CEs). The electrical conductivities of chemically synthesized PANI emeraldine salt (PANI-ES) and dedoped emeraldine base (PANI-EB) were increased from 3.1 S cm(-1) to 9.3 S cm(-1) and 2.0 x 10(-5) S cm(-1) to 0.5S cm(-1), and the doping levels of those were increased from 38.2% to 41.8% and 3.2% to 33.3%, respectively, via iodine vapor doping. Compared with PANI-ES and PANI-EB CEs, iodine-doped PANIs (PANI-ES-I-2 and PANI-EB-I-2) CEs with improved electrical properties were demonstrated higher electro-catalytic activity toward I-/I-3(-) redox couples, due to better charge carrier transport and reduced charge transfer resistance. The cells based on the PANI-ES-I-2 and PANI-EB-I-2 CE exhibited higher photovoltaic parameters and efficiency. Moreover, we successfully increased the cell efficiency of the PANI-ES-I-2 CE-based DSSCs to a maximum efficiency of similar to 7.86%. (C) 2013 Elsevier B.V. All rights reserved.
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Collections - College of Science and Technology > Department of Advanced Materials Chemistry > 1. Journal Articles
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