TY - JOUR
T1 - Hole-Transporting Self-Assembled Monolayer Enables Efficient Single-Crystal Perovskite Solar Cells with Enhanced Stability
AU - Almasabi, Khulud
AU - Zheng, Xiaopeng
AU - Turedi, Bekir
AU - Alsalloum, Abdullah Y.
AU - Lintangpradipto, Muhammad Naufal
AU - Yin, Jun
AU - Gutiérrez-Arzaluz, Luis
AU - Kotsovos, Konstantinos
AU - Jamal, Aqil
AU - Gereige, Issam
AU - Mohammed, Omar F.
AU - Bakr, Osman M.
N1 - Funding Information:
The authors acknowledge funding support from KAUST and Saudi Aramco. The authors acknowledge the use of KAUST Core Lab and KAUST Solar Center facilities.
Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/1/13
Y1 - 2023/1/13
N2 - The difficulty of growing perovskite single crystals in configurations suitable for efficient photovoltaic devices has hampered their exploration as solar cell materials, despite their potential to advance perovskite photovoltaic technology beyond polycrystalline films through markedly lower defect densities and desirable optoelectronic properties. While polycrystalline film absorbers can be deposited on myriad substrates, perovskite single crystals fit for high-efficiency devices have only been demonstrated on hydrophobic hole-transport layers [HTLs, e.g., poly(triaryl amine) (PTAA)], which has severely restricted the avenues for enhancing device efficiency and stability. Herein, we report the growth of mixed-cation FA0.6MA0.4PbI3 perovskite single crystals on a hydrophilic self-assembled monolayer {SAM, [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl]phosphonic acid), (MeO-2PACz)} HTL surface. Compared with PTAA, the MeO-2PACz SAM promotes the mechanical adhesion of the perovskite on the substrate, enabling the fabrication of inverted solar cells with substantially enhanced operational stability and power conversion efficiencies of up to 23.1%, setting a new benchmark for single-crystal perovskite solar cells.
AB - The difficulty of growing perovskite single crystals in configurations suitable for efficient photovoltaic devices has hampered their exploration as solar cell materials, despite their potential to advance perovskite photovoltaic technology beyond polycrystalline films through markedly lower defect densities and desirable optoelectronic properties. While polycrystalline film absorbers can be deposited on myriad substrates, perovskite single crystals fit for high-efficiency devices have only been demonstrated on hydrophobic hole-transport layers [HTLs, e.g., poly(triaryl amine) (PTAA)], which has severely restricted the avenues for enhancing device efficiency and stability. Herein, we report the growth of mixed-cation FA0.6MA0.4PbI3 perovskite single crystals on a hydrophilic self-assembled monolayer {SAM, [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl]phosphonic acid), (MeO-2PACz)} HTL surface. Compared with PTAA, the MeO-2PACz SAM promotes the mechanical adhesion of the perovskite on the substrate, enabling the fabrication of inverted solar cells with substantially enhanced operational stability and power conversion efficiencies of up to 23.1%, setting a new benchmark for single-crystal perovskite solar cells.
UR - http://www.scopus.com/inward/record.url?scp=85146393062&partnerID=8YFLogxK
U2 - 10.1021/acsenergylett.2c02333
DO - 10.1021/acsenergylett.2c02333
M3 - Journal article
AN - SCOPUS:85146393062
SN - 2380-8195
VL - 8
SP - 950
EP - 956
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 2
ER -