Energy converting material for solar cell application

Madhab Pokhrel; G A. Kumar; Dhiraj K. Sardar

doi:10.1117/12.906835

21 February 2012 Energy converting material for solar cell application

Madhab Pokhrel, G A. Kumar, Dhiraj K. Sardar

Proceedings Volume 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices; 82561Q (2012) https://doi.org/10.1117/12.906835
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

In this paper, we discuss the concept of an efficient infrared upconverting phosphor as an energy converting material that could potentially improve the efficiency of Si solar cells in bifacial configuration. Basic spectroscopic studies of Yb and Er-doped La₂O₂S phosphor was reported with particular attention to its upconversion properties under 1550 nm excitation. Different concentrations of phosphors were synthesized by solid state flux fusion method. The phosphor powders were well crystallized in a hexagonal shape with an average size 300-400 nm. The most efficient upconverting sample (1%Yb: 9% Er doped La₂O₂S) was also studied under the illumination with infrared (IR) broad band spectrum above 1000 nm. Our measurements show that even with an excitation power density of 0.159 W/cm2 using a tungsten halogen lamp the material shows efficient upconversion corroborating the fact that the present phosphors could be potential candidates for improving the efficiency of the present Si solar cells.

Citation Download Citation

Madhab Pokhrel, G A. Kumar, and Dhiraj K. Sardar "Energy converting material for solar cell application", Proc. SPIE 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, 82561Q (21 February 2012); https://doi.org/10.1117/12.906835

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