Research Specifications

Quantum dot-sensitized solar cells (QDSSCs) have attracted a great deal of attention in the field of solar cell fabrication due to their excellent optoelectronic properties[1]. Studies have shown that proper engineering of structures can effectively help absorb light, transfer charge and improve the efficiency of solar cells. Photonic crystals with physical properties such as slow light effect, light trapping, and photonic bandgap increase the efficiency of solar cells, and photonic bandgap inhibits light propagation in a certain wavelength range due to Bragg diffraction[2]. Rare intermediate metals such as Er3+, Yb3+, and Tm3+ can absorb electromagnetic waves in the low-energy infrared wavelength region, and emit electromagnetic waves in the visible region at higher energies, a process called upconversion[3]. Metal lanthanide elements due to the displacement of the emission from the infrared wavelength region with less energy to the visible region with more energy and the deposition of these nanoparticles on the surface of photonic crystals due to the different refractive index in the structure of photonic crystals, improves the emission displacement in Nanoparticles are doped intermediates in the photonic crystal structure. In this work, by doping lanthanides to the structure of inverse opal and depositing QDs by sillar method on TiO2 inverse opal and measuring current intensity and voltage, we observed the current from 8 mA to 10 mA with dopping Er3+ and the voltage to 670 mV increased.