首页|(Sm/Eu/Tm)3+doped tantalum semiconductor system for photovoltaic and electrochemical functionality amplification
(Sm/Eu/Tm)3+doped tantalum semiconductor system for photovoltaic and electrochemical functionality amplification
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This work reports the synthesis,characterization,and energy focused applications of the novel lantha-nides co-doped tantalum pentoxide hetero-system(Sm3+-Eu3+-Tm3+∶Ta2O5).Ln3+-doped Ta2O5 express excellent opto-electronic features reflected by the narrow band gap energy of 3.87 eV.Different vibra-tions confirm the presence of Ta-O-Ta and Ta-O bonds.The synthesized system possesses ortho-rhombic geometry with 59.46 nm particle size.With the smoother and compact morphology,the synthesized material succeeds in augmenting the performance of different systems aimed at energy applications.Fully ambient perovskite solar cell device fabricated with the Ln3+-doped Ta2O5 as an electron transport layer excels in achieving an efficiency and fill factor of 14.17％and 76％under artificial sun.This device was marked by the negligible hysteresis behavior showing profound photovoltaic per-formance.The electrochemical activity of the Ln3+-doped Ta2O5 decorated electrode was evaluated for electrical charge storage potential with pseudocapacitive behavior.With the highest specific capacitance of 355.39 F/g and quicker ionic diffusion rate,the designed electrode excels conventionally used mate-rials.Electro-catalysis of water with Ln3+-doped Ta2O5 material indicates its capacity for H2 production with the lowest overpotential and Tafel slope values of 148 and 121.2 mV/dec,while the O2 generation is comparatively lower.With the stable electrochemical output,this rare earth modified material has the potential to replace conventionally used environmentally perilous and costly materials.
Lanthanide dopingRare earth materialsPerovskite solar cellsSupercapacitorsWater splitting
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