TY - JOUR
T1 - Porphyrin Dimers as Hole-Transporting Layers for High-Efficiency and Stable Perovskite Solar Cells
AU - Chiang, Yu Hsien
AU - Chou, Hsien Hsin
AU - Cheng, Wei Ting
AU - Li, Yun Ru
AU - Yeh, Chen Yu
AU - Chen, Peter
N1 - Funding Information:
The authors are grateful for financial support for this work from the Ministry of Science and Technology (MOST) in Taiwan with Grant No. MOST 104-2119-M-005-005, MOST 105-2119-M-005-001, MOST 106-2119-M-006-027, and MOST 106-2119-M-006-017 and the “Innovation and Development Center of Sustainable Agriculture” and “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) in Taiwan.
Publisher Copyright:
© Copyright 2018 American Chemical Society.
PY - 2018/7/13
Y1 - 2018/7/13
N2 - In this work, we demonstrate the optimum utilization of porphyrin-based hole-transporting materials (HTMs), namely, WT3 and YR3, for fabricating triple-cation perovskite solar cells. These newly designed HTMs based on dimeric porphyrin structure exhibit a good HOMO level, high hole mobility, and great charge extraction ability for perovskite solar cells. Moreover, through proper molecular engineering, dimeric porphyrins WT3 and YR3 are capable of forming films free of pinholes, with more uniform and dense surfaces leading to enhanced device performance. Perovskite solar cells using a WT3 HTM achieve a power conversion efficiency (PCE) of 19.44%, which is higher than that using YR3 (17.84%) and even spiro-OMeTAD (18.62%) under 1 Sun AM 1.5G illumination. In addition, WT3-based devices show better stability than spiro-based counterparts under moisture, light-soaking, and thermal testing conditions.
AB - In this work, we demonstrate the optimum utilization of porphyrin-based hole-transporting materials (HTMs), namely, WT3 and YR3, for fabricating triple-cation perovskite solar cells. These newly designed HTMs based on dimeric porphyrin structure exhibit a good HOMO level, high hole mobility, and great charge extraction ability for perovskite solar cells. Moreover, through proper molecular engineering, dimeric porphyrins WT3 and YR3 are capable of forming films free of pinholes, with more uniform and dense surfaces leading to enhanced device performance. Perovskite solar cells using a WT3 HTM achieve a power conversion efficiency (PCE) of 19.44%, which is higher than that using YR3 (17.84%) and even spiro-OMeTAD (18.62%) under 1 Sun AM 1.5G illumination. In addition, WT3-based devices show better stability than spiro-based counterparts under moisture, light-soaking, and thermal testing conditions.
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U2 - 10.1021/acsenergylett.8b00607
DO - 10.1021/acsenergylett.8b00607
M3 - Article
AN - SCOPUS:85048722268
SN - 2380-8195
VL - 3
SP - 1620
EP - 1626
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 7
ER -