2013年2月
Thickness dependence of photovoltaic performance of additional spray coated solar cells
THIN SOLID FILMS
- ,
- ,
- 巻
- 529
- 号
- 開始ページ
- 464
- 終了ページ
- 469
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.tsf.2012.07.080
- 出版者・発行元
- ELSEVIER SCIENCE SA
We report the photovoltaic performance of solar cells with various active layer thicknesses prepared through "additional spray coating" method, which includes the spraying of o-dichlorobenzene (viz. pristine solvent) after the conventional spray coating of a mixture of poly(3-hexylthiophene): [6,6]-phenyl-C-61-butyric acid methyl ester as active layer solution.
The thickness of the active layer for which maximal efficiency was achieved was found to be around 220 nm with highly efficient light harvesting and charge transfer due to the minimization of internal pinholes. Particularly, the short circuit current and fill factor did not decrease severely with the increment of the thickness of the active layer (even to as high as 737 nm). This is as opposed to the spin coated device, which performance gradually drops with increasing thickness. This trend may be ascribed to the formation of uneven pathway for charge carriers and more efficient light harvesting due to the interconnection of droplets formed by additional solvent spray coating. (C) 2012 Elsevier B.V. All rights reserved.
The thickness of the active layer for which maximal efficiency was achieved was found to be around 220 nm with highly efficient light harvesting and charge transfer due to the minimization of internal pinholes. Particularly, the short circuit current and fill factor did not decrease severely with the increment of the thickness of the active layer (even to as high as 737 nm). This is as opposed to the spin coated device, which performance gradually drops with increasing thickness. This trend may be ascribed to the formation of uneven pathway for charge carriers and more efficient light harvesting due to the interconnection of droplets formed by additional solvent spray coating. (C) 2012 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.tsf.2012.07.080
- ISSN : 0040-6090
- J-Global ID : 201302273588057705
- Web of Science ID : WOS:000315928000100