TY - JOUR
T1 - Long-term stable perovskite solar cells prepared by doctor blade coating technology using bilayer structure and non-toxic solvent
AU - Hsu, Hung Chieh
AU - Wu, Shih Hsiung
AU - Tung, Yung Liang
AU - Shih, Chuan Feng
N1 - Funding Information:
This work was financially supported by the Hierarchical Green-Energy Materials (Hi- GEM ) Research Center, from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education ( MOE ) and the Ministry of Science and Technology (contract No.: MOST 110-2634-F-006 -017) in Taiwan.
Funding Information:
The financial support provided by Bureau of Energy under Contract No. 110-D0104 is gratefully acknowledged. The authors are grateful for the support of the Ministry of Science and Technology of the Republic of China under Contract No. 109-2221-E-006-137, No. 110-2224-E-006-006 Taiwan. The authors gratefully acknowledge of HR-SEM (HAITACHI SU8000) belonging to the Core Facility Center of National Cheng Kung University, Taiwan. This work was financially supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center, from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) and the Ministry of Science and Technology (contract No.: MOST 110-2634-F-006 -017) in Taiwan.
Funding Information:
The financial support provided by Bureau of Energy under Contract No. 110-D0104 is gratefully acknowledged.
Funding Information:
The authors are grateful for the support of the Ministry of Science and Technology of the Republic of China under Contract No. 109-2221-E-006-137, No. 110-2224-E-006-006 Taiwan.
Publisher Copyright:
© 2021
PY - 2022/2
Y1 - 2022/2
N2 - The doctor blade coating technology for the perovskite solar cells (PSCs) is studied. The bilayer and triple-layer structures based on CsFAPb(IBr)3 and MAPbI3 layers were designed and fabricated by the doctor blade coating. The conventional highly toxic dimethylformamide (DMF) used in the precursors are replaced by the mixtures of gamma-butyrolactone (GBL) and dimethyl sulfoxide (DMSO). Single cation and mixed-cation perovskite layer with different stacks are also compared. It is found that the as-prepared single cation perovskite (MAPbI3) PSCs have better photovoltaic performance but worse lifetime than those of the mixed-cation perovskite (CsFAPb(IBr)3) PSCs. Additionally, the bi-layer structure PSC has a brighter and smoother surface, higher quantum efficiency, and higher crystallinity. Those factors concerning the MAPbI3/CsFAPb(IBr)3(upper/lower) solar cell to have superior properties and better lifetime under the elevated temperature and humidity than that of the CsFAPb(IBr)3/MAPbI3(upper/lower) solar cell. Moreover, when the MAPbI3 is used as the capping layer of the CsFAPb(IBr)3/MAPbI3 bilayer PCS, its photovoltaic performance is better. Secondary ion mass spectroscopy indicates that MAPbI3 capping layer has better ability to dissolve the bottom layers than that of CsFAPb(IBr)3 due to the reduction of inter-diffusion of molecules and smooth surface during lifetime test. Finally, the MAPbI3/CsFAPb(IBr)3 bilayer device shows the best initial power conversion efficiency (PCE), Voc, and Jsc of 15.4%, 1.01 V, and 20.7 mA/cm2 respectively. The encapsulated PSC keeps 92% of original PCE under ambient environment at room temperature and relative humidity of 40% after 1000 h.
AB - The doctor blade coating technology for the perovskite solar cells (PSCs) is studied. The bilayer and triple-layer structures based on CsFAPb(IBr)3 and MAPbI3 layers were designed and fabricated by the doctor blade coating. The conventional highly toxic dimethylformamide (DMF) used in the precursors are replaced by the mixtures of gamma-butyrolactone (GBL) and dimethyl sulfoxide (DMSO). Single cation and mixed-cation perovskite layer with different stacks are also compared. It is found that the as-prepared single cation perovskite (MAPbI3) PSCs have better photovoltaic performance but worse lifetime than those of the mixed-cation perovskite (CsFAPb(IBr)3) PSCs. Additionally, the bi-layer structure PSC has a brighter and smoother surface, higher quantum efficiency, and higher crystallinity. Those factors concerning the MAPbI3/CsFAPb(IBr)3(upper/lower) solar cell to have superior properties and better lifetime under the elevated temperature and humidity than that of the CsFAPb(IBr)3/MAPbI3(upper/lower) solar cell. Moreover, when the MAPbI3 is used as the capping layer of the CsFAPb(IBr)3/MAPbI3 bilayer PCS, its photovoltaic performance is better. Secondary ion mass spectroscopy indicates that MAPbI3 capping layer has better ability to dissolve the bottom layers than that of CsFAPb(IBr)3 due to the reduction of inter-diffusion of molecules and smooth surface during lifetime test. Finally, the MAPbI3/CsFAPb(IBr)3 bilayer device shows the best initial power conversion efficiency (PCE), Voc, and Jsc of 15.4%, 1.01 V, and 20.7 mA/cm2 respectively. The encapsulated PSC keeps 92% of original PCE under ambient environment at room temperature and relative humidity of 40% after 1000 h.
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U2 - 10.1016/j.orgel.2021.106400
DO - 10.1016/j.orgel.2021.106400
M3 - Article
AN - SCOPUS:85120648266
VL - 101
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
M1 - 106400
ER -