期刊
SMALL
卷 17, 期 32, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202101925
关键词
carbon nanotubes; MXenes; perovskite solar cells; 2D materials
类别
资金
- Saudi Arabian Cultural Mission (SACM)
- Ministry of Education of Saudi Arabia
- Australian Research Council Discovery Program [DP 200101217]
- Royal Commission for the Exhibition of 1851 through an 1851 Research Fellowship
Incorporating 2D MXenes into the electron transporting layer of perovskite solar cells has been shown to deliver high-efficiency photovoltaic devices. By employing metallic single-walled carbon nanotubes to prepare composites, a power conversion efficiency of over 21% is achieved, demonstrating a new avenue for realizing high-performance PSCs.
Incorporation of 2D MXenes into the electron transporting layer (ETL) of perovskite solar cells (PSCs) has been shown to deliver high-efficiency photovoltaic (PV) devices. However, the ambient fabrication of the ETLs leads to unavoidable deterioration in the electrical properties of MXene due to oxidation. Herein, sorted metallic single-walled carbon nanotubes (m-SWCNTs) are employed to prepare MXene/SWCNTs composites to improve the PV performance of PSCs. With the optimized composition, a power conversion efficiency of over 21% is achieved. The improved photoluminescence and reduced charge transfer resistance revealed by electrochemical impedance spectroscopy demonstrated low trap density and improved charge extraction and transport characteristics due to the improved conductivity originating from the presence of nanotubes as well as the reduced defects associated with oxygen vacancies on the surface of the SnO2. The MXene/SWCNTs strategy reported here provides a new avenue for realizing high-performance PSCs.
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