Effect of annealing temperatures on performance of DSSCs fabricated using Ag or Pd@C@ZnO composites as photoanode materials

被引:15
作者
Ansir, Rotaba [1 ,2 ,3 ]
Ullah, Naimat [1 ]
Unlu, Burak [3 ,4 ]
Shah, Syed Mujtaba [1 ]
Ozacar, Mahmut [2 ,3 ]
机构
[1] Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan
[2] Sakarya Univ, Sci & Arts Fac, Dept Chem, TR-54187 Sakarya, Turkey
[3] Sakarya Univ, Biomat Energy Photocatalysis Enzyme Technol Nano, BIOENAMS R&D Grp, TR-54187 Sakarya, Turkey
[4] Sakarya Univ, Biomed Magnet & Semicond Mat Applicat & Res Ctr B, TR-54187 Sakarya, Turkey
关键词
Dye sensitized solar cells; Carbon shell; Valonea; Composite photoanode; Annealing; SENSITIZED SOLAR-CELLS; THIN-FILM; DYE; NANOSTRUCTURES; NANOPARTICLES; FE;
D O I
10.1016/j.solener.2021.06.042
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
ZnO nanorods have been synthesized with microwave treatment and co-precipitation method. Different concentrations of Ag@C and Pd@C nanospheres prepared by hydrothermal method were loaded onto ZnO nanorods. The sample obtained was characterized by x-ray diffraction (XRD), UV-vis reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and Energy dispersive X-ray spectroscopy (EDX). The metal content did not change the peak position deducing that prepared materials were of high purity. Different types of cells were prepared to check the effect of noble metal content on the optical property on ZnO and annealed at different temperatures. The cells were tested in a conventional architecture sing Pt counter electrode and I-/I-3 electrolyte. The dye sensitized solar cells (DSSCs) based on Ag@C-ZnO photoanode including 50 mg Ag annealed at 500 degrees C was found to be more efficient among all DSSs with an efficiency of 3.60% and a current density of 7.87 mA/cm2 with a fill factor of 59.3%. While DSSC based on Pd@C-ZnO photoanode including 50 mg Pd with the same conditions was observed to possess 1.93% efficiency with current density 6.01 mA/cm2 and fill factor of 42.9%. The enhancement in ZnO efficiency is attributed to the reduction in electron hole recombination and increase in photo-generated e-/h+ due to presence of noble metals and valonea.
引用
收藏
页码:617 / 628
页数:12
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