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Large-area flexible, transparent, and highly luminescent films containing lanthanide (III) complex-doped ionic liquids for efficiency enhancement of silicon-based heterojunction solar cell.
- Source :
- Progress in Photovoltaics; Dec2017, Vol. 25 Issue 12, p1015-1021, 7p
- Publication Year :
- 2017
-
Abstract
- ABSTRACT Ionic liquid (IL)-based lanthanide luminescent materials with luminescent downshifting properties are beneficial for enhancing the photovoltaic energy conversion efficiency ( η<subscript>pv</subscript>) of silicon-based solar cells. Herein, novel lanthanide (III) complex-doped ILs have been successfully prepared by simply dissolving the complex Ln(pybox)<subscript>3</subscript> (Ln = Eu or Tb, pybox = 2,6-bis[(4 R)-4-phenyl-2-oxazolinyl]pyridine) into a bidentate organophosphine functionalized IL (1,3-bis-[3-(diphenylphosphinyl)propyl]imidazolebis (trifluoromethylsulfonyl)imide), showing improved luminescence efficiency attributed to the coordination of ILs with Ln<superscript>3+</superscript> ions and thus occurrence of the energy transfer from ILs to Ln<superscript>3+</superscript> ions and very high absolute quantum efficiency (up to 97.22%). Large area (17 × 17 cm<superscript>2</superscript>) flexible, transparent, and luminescent poly(methyl methacrylate) thin films were prepared through a simple drop-casting method and were applied as luminescent downshifting coatings to the silicon-based heterojunction solar cells (active area: 235 cm<superscript>2</superscript>). In the best case using the Tb<superscript>3+</superscript>-containing film, the η<subscript>pv</subscript> of the solar cell increases from 16.676 to 16.774%. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10627995
- Volume :
- 25
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Progress in Photovoltaics
- Publication Type :
- Academic Journal
- Accession number :
- 126316439
- Full Text :
- https://doi.org/10.1002/pip.2915