From Event: SPIE Optics + Photonics for Sustainable Energy, 2016
In this work are presented the results obtained with solar cells sensitized with quantum dots of cadmium sulphide (CdS) incorporating luminescent materials (NaYF4:Yb/Er). The study revealed that through using a bifunctional layer of NaYF4:Yb/Er submicron rods, the infrared radiation is absorbed in 980nm to generate luminescence in the visible region to 530nm, under the UP-conversion process, in the same way simultaneously, NaYF4:Yb/Er layer causes scattering toward the quantum dots, the emission and scattering generated by this material is reabsorbed by the QD-CdS, and these in turn are absorbing in its range of solar radiation absorption, Thus generates an increase in the electron injection into the semiconductor of TiO2. The results of a cell incorporating NaYF4: Yb/Er at 0.07M shown photoconversion efficiencies of 3.39% improving efficiency with respect to the reference solar cell without using NaYF4: Yb/Er of 1.99%. The obtained values of current and voltage showed a strong dependence of the percentage of NaYF4 Yb/Er, and the mechanism of incorporation of this material.
J. Pablo Guerrero, Andrea Cerdán Pasarán, Tzarara López-Luke, D. Ramachari, Diego Esparza, Elder De la Rosa Cruz, and Victor Hugo Romero Arellano, "Bifunctional NaYF4:Er3+/Yb3+ submicron rods, implemented in quantum dot sensitized solar cell
(Conference Presentation)," Proc. SPIE 9936, Thin Films for Solar and Energy Technology VIII, 993606 (Presented at SPIE Optics + Photonics for Sustainable Energy: August 28, 2016; Published: 2 November 2016); https://doi.org/10.1117/12.2237073.5167075353001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon