上转换发光材料La(OH)3∶Er3+/Yb3+的制备及在染料敏化太阳能电池中的应用

doi:10.11896/j.issn.1005-023X.2018.05.003

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Abstract It is universally known that N719 dye can only absorb visible light, which has always been a limitation for its application in dye-sensitized solar cells (DSSCs). In this study, a rare-earth upconversion luminescent material was introduced to broaden the absorption spectrum of N719 sensitized TiO₂ photoanodes, enhance light harvesting efficiency, and further improve the perfor-mance of DSSCs devices. Firstly, the upconversion luminescent material of Yb³⁺/Er³⁺ doped La(OH)₃ had been successfully synthesized via the simple hydrothermal method by controlling the pH values of precursor solution. Then, different contents of these Yb³⁺/Er³⁺ doped La(OH)₃ powders were further mixed with P25 for the preparations of TiO₂ paste. Finally, the TiO₂ photoanodes with different contents of the upconversion luminescent materials were made by doctor-blade method for further application in DSSCs. As a result, through the introduction of upconversion luminescent materials, the scope of spectral absorption was broadened, and when the doping amount was up to 3%, the highest power conversion efficiency of DSSCs reached 8.3% with the maximum short-circuit current density of 17.72 mA·cm^-2.

Key words： upconversion luminescent material rare-earth dye-sensitized solar cell photoanode photoelectric conversion efficiency

Published: 10 March 2018

CLC number:

TM914

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	Articles by authors
	WU Yadan
	HU Zhen
	ZHAO Li
	WANG Shimin
	DONG Binghai
	WANG Erjing
	GUO Haiyong

Cite this article:

WU Yadan,HU Zhen,ZHAO Li, et al. The Preparation of an Upconversion Luminescent Material La(OH)₃∶Er³⁺/Yb³⁺ and Its Application in Dye-sensitized Solar Cells[J]. Materials Reports, 2018, 32(5): 708-714.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.05.003 OR http://www.mater-rep.com/EN/Y2018/V32/I5/708

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