TY - JOUR
T1 - 1D-2D Synergistic MXene-Nanotubes Hybrids for Efficient Perovskite Solar Cells
AU - Bati, Abdulaziz S.R.
AU - Hao, Mengmeng
AU - Macdonald, Thomas J.
AU - Batmunkh, Munkhbayar
AU - Yamauchi, Yusuke
AU - Wang, Lianzhou
AU - Shapter, Joseph G.
PY - 2021/8/12
Y1 - 2021/8/12
N2 - 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.
AB - 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.
KW - 2D materials
KW - carbon nanotubes
KW - MXenes
KW - perovskite solar cells
UR - http://www.scopus.com/inward/record.url?scp=85109146708&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/DP200101217
U2 - 10.1002/smll.202101925
DO - 10.1002/smll.202101925
M3 - Article
C2 - 34213834
AN - SCOPUS:85109146708
SN - 1613-6810
VL - 17
JO - Small
JF - Small
IS - 32
M1 - 2101925
ER -
