TY - JOUR
T1 - Improvement of the dynamic spin-washing effect with an optimized process of a perovskite solar cell in ambient air by the Kriging method
AU - Ariyarit, Atthaporn
AU - Yoshikawa, Ryohei
AU - Takenaka, Issei
AU - Gillot, Frédéric
AU - Shiratori, Seimei
N1 - Funding Information:
The authors acknowledge receipt of financial support from Marubun research promotion foundation 2017. We are deeply grateful to Takeo Moriya for obtaining the AFM results.
PY - 2017/10/4
Y1 - 2017/10/4
N2 - Lead halide perovskite solar cells (PVSCs) exhibit high efficiencies and are based on abundant materials; further, they can be deposited on flexible substrates using easy fabrication processes. Here, we report a way to fabricate a 1 cm2 perovskite solar cell outside a glovebox (humidity below 40%) via a modified two-step method with a FTO/TiO2/perovskite/Spiro-OMeTAD/Au structure. This modified two-step method is based on the "dynamic spin-washing method". After dipping the perovskite films into a methylammonium iodide solution, they were washed with isopropyl alcohol (IPA) at different spin speeds. The surface morphology and crystallinity of the perovskite layer were drastically improved using this method. We also investigated and conducted an experiment to explain the effect of the dynamic spin-washing on the surface morphology and crystallinity. Lastly, we optimized the thickness of the TiO2 layer and observed a maximum power conversion efficiency of 13.75% and 11.78% for small- and large-area devices, respectively.
AB - Lead halide perovskite solar cells (PVSCs) exhibit high efficiencies and are based on abundant materials; further, they can be deposited on flexible substrates using easy fabrication processes. Here, we report a way to fabricate a 1 cm2 perovskite solar cell outside a glovebox (humidity below 40%) via a modified two-step method with a FTO/TiO2/perovskite/Spiro-OMeTAD/Au structure. This modified two-step method is based on the "dynamic spin-washing method". After dipping the perovskite films into a methylammonium iodide solution, they were washed with isopropyl alcohol (IPA) at different spin speeds. The surface morphology and crystallinity of the perovskite layer were drastically improved using this method. We also investigated and conducted an experiment to explain the effect of the dynamic spin-washing on the surface morphology and crystallinity. Lastly, we optimized the thickness of the TiO2 layer and observed a maximum power conversion efficiency of 13.75% and 11.78% for small- and large-area devices, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85032684716&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85032684716&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.7b02515
DO - 10.1021/acs.iecr.7b02515
M3 - Article
AN - SCOPUS:85032684716
VL - 56
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 39
ER -