Synthesis of co-doped Yb3+-Er3+:ZrO2 upconversion nanoparticles and their applications in enhanced photovoltaic properties of quantum dot sensitized solar cells

Publication date: 25 March 2017
Source:Journal of Alloys and Compounds, Volume 698
Author(s): D. Ramachari, D. Esparza, T. López-Luke, V.H. Romero, L. Perez-Mayen, E. De la Rosa, C.K. Jayasankar
In this work, we explore the development of Yb³⁺-Er³⁺ co-doped ZrO2 nanoparticles to coat on TiO2/CdS/ZnS configuration to boost the photoconversion efficiency of quantum dot sensitized solar cells. Photovoltaic measurement results indicate that the Yb³⁺-Er³⁺:ZrO2 layer on TiO2/CdS/ZnS configuration offer a remarkable enhancement in open circuit voltage (593 mV) and fill factor (68.7%). This results proves that it is possible to increase the 55% of photoconversion efficiency (3.0%) in the CdS-based QDSSCs effectively by incorporating the Yb³⁺-Er³⁺:ZrO2 layer. Electrochemical impedance spectroscopy measurements confirm further the suppressed charge recombination process after coating with the Yb³⁺-Er³⁺:ZrO2 layer.



http://ift.tt/2i4Mlqg