Efficient and Stable Z907-Based Dye-Sensitized Solar Cells Enabled by Suppressed Charge Recombination and Photocatalytic Activity

Huang, Xiufang1; Gao, Yueyue1; Li, Wanpeng1; Wang, Jiantao2; Yue, Gentian1; Tan, Furui1; Wang, Hsing-Lin2

2024-08-01

10.1021/acssuschemeng.4c05171

ACS SUSTAINABLE CHEMISTRY & ENGINEERING   影响因子和分区

2168-0485

Dye-sensitized solar cells (DSSCs) based on the TiO2 photoanode are promising contenders for photovoltaic technology. However, the TiO2 photoanode shows severe charge recombination and leads to rapid photodegradation of absorbed dyes due to its photocatalytic activity. Herein, we developed a hybrid photoanode by embedding a multifunctional fulleropyrrolidine (PCBO-3) into a TiO2 film. The hybrid film presents higher electron mobility, aligned energy level with dyes, and reduced oxygen vacancy defects, synergistically contributing to suppressed charge recombination and photocatalytic activity. Moreover, the dye molecules can form hydrogen bonds with PCBO-3 molecules, thus enhancing dye loading and photon harvesting. The resulting DSSCs based on hybrid photoanode yield efficiencies of 11.6% under standard one sun illumination and 32.8% under 1500 lx dim light, representing the highest values for Z907-based DSSCs. The encapsulated devices show enhanced long-term operational stability, retaining 76.8% and 89.3% of the initial PCE under standard one sun and dim light for 500 h, respectively. In contrast, only 48.9% and 69.5% of their original efficiency could be maintained for control devices. Our results suggest that hybrid anode is a facile approach to revitalizing DSSCs.

Dye-sensitized solarcells Operational stability Photocatalytic activity Fullerene derivative Indoor photovoltaic

SCI ; EI

英语

通讯

National Natural Science Foundation of China[62204079] ; China Postdoctoral Science Foundation[2022M711037] ; Guangdong Provincial Key University Laboratory of Highly Efficient Utilization of Solar Energy[2018B030322001] ; Sustainable Development of Guangdong[Y70250001]

Chemistry ; Science & Technology - Other Topics ; Engineering

Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical

WOS:001291842200001

AMER CHEMICAL SOC

Web of Science

1.Henan Univ, Sch Quantum Informat Future Technol, Henan Key Lab Quantum Mat & Quantum Energy, Kaifeng 475004, Peoples R China
2.Southern Univ Sci & Technol, Key Univ Lab Highly Efficient Utilizat Solar Energ, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Huang, Xiufang,Gao, Yueyue,Li, Wanpeng,et al. Efficient and Stable Z907-Based Dye-Sensitized Solar Cells Enabled by Suppressed Charge Recombination and Photocatalytic Activity[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2024.

Huang, Xiufang.,Gao, Yueyue.,Li, Wanpeng.,Wang, Jiantao.,Yue, Gentian.,...&Wang, Hsing-Lin.(2024).Efficient and Stable Z907-Based Dye-Sensitized Solar Cells Enabled by Suppressed Charge Recombination and Photocatalytic Activity.ACS SUSTAINABLE CHEMISTRY & ENGINEERING.

Huang, Xiufang,et al."Efficient and Stable Z907-Based Dye-Sensitized Solar Cells Enabled by Suppressed Charge Recombination and Photocatalytic Activity".ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2024).