Electron transport of chemically treated graphene quantum dots-based dye-sensitized solar cells

被引：16
作者：
Mahalingam, Savisha [1 ]
Manap, Abreeza [1 ]
Rabeya, Ramisha [2 ]
Lau, Kam Sheng [3 ]
Chia, Chin Hua [3 ]
Abdullah, Huda [4 ]
Amin, Nowshad [1 ]
Chelvanathan, Puvaneswaran [5 ]
机构：
[1] Univ Tenaga Nas, Inst Sustainable Energy, Jalan IKRAM UNITEN, Kajang 43000, Selangor, Malaysia
[2] Univ Tenaga Nas, Coll Engn, Dept Mech Engn, Jalan IKRAM UNITEN, Kajang 43000, Selangor, Malaysia
[3] Univ Kebangsaan Malaysia, Fac Sci & Technol, Dept Appl Phys, Mat Sci Program, Bangi 43600, Selangor, Malaysia
[4] Univ Kebangsaan Malaysia, Fac Engn & Built Environm, Dept Elect, Elect & Syst Engn, Bangi 43600, Selangor, Malaysia
[5] Univ Kebangsaan Malaysia, Solar Energy Res Inst, Bangi 43600, Selangor, Malaysia
来源：
ELECTROCHIMICA ACTA | 2023年 / 439卷
关键词：
Electron injection efficiency; Energy; Graphene quantum dots; Titanium tetrachloride; TICL4; POSTTREATMENT; EFFICIENCY; NANOPARTICLES; PHOTOANODE; CONVERSION; ENHANCEMENT; FABRICATION; NANOSHEETS; SURFACE; POWDER;
D O I：
10.1016/j.electacta.2022.141667
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The main aim of this work is to elucidate the effect of the chemical treatment of titanium tetrachloride (TiCl4) in graphene quantum dots (GQDs)-based dye-sensitized solar cells (DSSCs). Although this type of chemical treat-ment has been used in DSSCs, the detailed electron transport properties of TiCl4-treated TiO2/GQDs+dye have not been studied yet. In this study, we have proposed a detailed mechanism for how the extra titania layer with TiCl4 provides high surface area and porosity to improve the adsorption of GQDs and dye. Moreover, the electron transport analysis revealed that the treatment reduced the electron recombination rate and increased the electron injection efficiency up to 73.8%, leading to a high Jsc and longer electron lifetime in the DSSC. Additionally, a performance comparison study with other types of GQDs under TiCl4 treatment was also investigated in this work.
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页数：9
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