Solvent engineering of the electron transport layer using 1,8-diiodooctane for improving the performance of perovskite solar cells |
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| Affiliation: | 1. Department of Bio-Nano Technology, Gachon University, Gyeonggi 461-701, Republic of Korea;2. Department of Nano-Physics, Gachon University, Gyeonggi 461-701, Republic of Korea;3. Gachon Bio-Nano Research Institute, Gyeonggi 461-701, Republic of Korea;1. CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Centre for Nanoscience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, China;2. University of Chinese Academy of Science, No. 19A Yuquan Road, Beijing 100049, China;1. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;2. Department of Chemical & Biological Engineering, Hanbat National University, Daejeon 305-719, Republic of Korea;3. Department of Materials Science and Engineering, Jungwon University, Goesan 367-805, Republic of Korea;4. School of Mechanical Engineering, Konkuk University, Seoul 143-701, Republic of Korea;5. Department of Organic and Nano System Engineering, Konkuk University, Seoul 143-701, Republic of Korea;1. Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taiwan;2. Department of Photonics Engineering, Yuan Ze University, Taiwan;3. Department of Electro-Optical Engineering, National United University, No. 1, Lienda, Kung-Ching Li, Miaoli 36003, Taiwan;1. Center for Nano-Photonics Convergence Technology, Korea Institute of Industrial Technology, 500-480 Gwangju, Republic of Korea;2. Division of Microelectronic and Display Technology, Wonkwang University, Iksan, Jeollabukdo 500-749, Republic of Korea;1. Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany;2. Philips Technologie GmbH, Innovative Technologies, Research Laboratories, Philipsstrasse 8, D-52068 Aachen, Germany |
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| Abstract: | In this work, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) was improved by 14.8% (from 11.09% to 12.73%) by using 1,8-diiodooctane (DIO) as a solvent additive during the deposition of phenyl-C61-butyric acid methyl ester (PCBM) layers. The primary reasons for the PCE improvement are the simultaneous increases in the short-circuit current density, fill factor, and open-circuit voltage. The incorporation of DIO improves the morphology of the electron transport layer (PCBM), which plays an important role in charge dissociation, transportation, and collection. Our results indicate that engineering the morphology of the electron transport layer is a simple and effective method for developing high-performance PSCs. |
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| Keywords: | 1 8-Diiodooctane Perovskite solar cells Electron transport layer Power conversion efficiency |
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