Issue 33, 2012
From the journal:

Journal of Materials Chemistry

Use of colloidal upconversion nanocrystals for energy relay solar cell light harvesting in the near-infrared region†

Chunze Yuan,a   Guanying Chen,*abc   Paras N. Prasad,c   Tymish Y. Ohulchanskyy,c   Zhijun Ning,*a   Haining Tian,d   Licheng Sund  and  Hans Ågren*a  

* Corresponding authors

a Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology (KTH), Stockholm, Sweden
E-mail: ningzj82@theochem.kth.se, guanying@buffalo.edu, agren@theochem.kth.se
Fax: +46 8 55378416
Tel: +46 8 55378590

b School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 15000, People's Republic of China

c Institute for Lasers, Photonics, and Biophotonics, The State University of New York at Buffalo, Buffalo, New York 14260, USA

d Center of Molecular Devices, Department of Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden

Abstract

Colloidal upconversion (UC) nanocrystals were explored as energy relay materials for dye-sensitized solar cells for the first time. The utilization of colloidal UC nanocrystals was found to significantly enhance the upconversion efficiency and improve the photocurrent of the cells for low infrared irradiation intensity. In addition, it was found that UC nanocrystals of small size favor infiltration into a TiO2 film and bring higher relay efficiency. Finally, we found that UC nanocrystals can serve as a scattering material to increase the light absorption capability of the cells and increase the overall photocurrent of the cells under simulated sunlight irradiation.

Graphical abstract: Use of colloidal upconversion nanocrystals for energy relay solar cell light harvesting in the near-infrared region

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Article information

DOI
https://doi.org/10.1039/C2JM16127C
Article type
Communication
Submitted
24 Nov 2011
Accepted
08 Jun 2012
First published
04 Jul 2012

J. Mater. Chem., 2012,22, 16709-16713

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Use of colloidal upconversion nanocrystals for energy relay solar cell light harvesting in the near-infrared region

C. Yuan, G. Chen, P. N. Prasad, T. Y. Ohulchanskyy, Z. Ning, H. Tian, L. Sun and H. Ågren, J. Mater. Chem., 2012, 22, 16709 DOI: 10.1039/C2JM16127C

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