High‐Performance Long‐Term‐Stable Dopant‐Free Perovskite Solar Cells and Additive‐Free Organic Solar Cells by Employing Newly Designed Multirole π‐Conjugated Polymers |
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| Authors: | Kakaraparthi Kranthiraja Kumarasamy Gunasekar Hyunji Kim An‐Na Cho Nam‐Gyu Park Seonha Kim Bumjoon J Kim Ryosuke Nishikubo Akinori Saeki Myungkwan Song Sung‐Ho Jin |
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| Affiliation: | 1. Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials, Pusan National University, Busan, Republic of Korea;2. School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon, Korea;3. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea;4. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan;5. Surface Technology Division, Korea Institute of Materials Science, Changwon, Republic of Korea |
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| Abstract: | Perovskite solar cells (PSCs) and organic solar cells (OSCs) are promising renewable light‐harvesting technologies with high performance, but the utilization of hazardous dopants and high boiling additives is harmful to all forms of life and the environment. Herein, new multirole π‐conjugated polymers (P1–P3) are developed via a rational design approach through theoretical hindsight, further successfully subjecting them into dopant‐free PSCs as hole‐transporting materials and additive‐free OSCs as photoactive donors, respectively. Especially, P3‐based PSCs and OSCs not only show high power conversion efficiencies of 17.28% and 8.26%, but also display an excellent ambient stability up to 30 d (for PSCs only), owing to their inherent superior optoelectronic properties in their pristine form. Overall, the rational approach promises to support the development of environmentally and economically sustainable PSCs and OSCs. |
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| Keywords: | additive‐free organic solar cells dopant‐free perovskite solar cells new multirole π ‐conjugated polymers theoretical studies time‐resolved microwave conductivity |
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