Highly Efficient and Stable Inverted Perovskite Solar Cell Obtained via Treatment by Semiconducting Chemical Additive
| Autor: | Varun Kumar Singh, Eui Dae Jung, Yung Sam Kim, Shinuk Cho, Eunsong Lee, Min Sang Kwon, Myoung Hoon Song, Dae Woo Kim, Sachin Badgujar, Jae Choul Yu, Johannes Gierschner |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Passivation Mechanical Engineering Energy conversion efficiency Perovskite solar cell 02 engineering and technology Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Chemical engineering Mechanics of Materials Yield (chemistry) Molecule General Materials Science Charge carrier 0210 nano-technology Perovskite (structure) |
| Zdroj: | Repositorio Institucional del Instituto Madrileño de Estudios Avanzados en Nanociencia instname |
| ISSN: | 1521-4095 |
| Popis: | The addition of chemical additives is considered as a promising approach for obtaining high-quality perovskite films under mild conditions, which is essential for both the efficiency and the stability of organic-inorganic hybrid perovskite solar cells (PeSCs). Although such additive engineering yields high-quality films, the inherent insulating property of the chemical additives prevents the efficient transport and extraction of charge carriers, thereby limiting the applicability of this approach. Here, it is shown that organic conjugated molecules having rhodanine moieties (i.e., SA-1 and SA-2) can be used as semiconducting chemical additives that simultaneously yield large-sized perovskite grains and improve the charge extraction. Using this strategy, a high power conversion efficiency of 20.3% as well as significantly improved long-term stability under humid air conditions is achieved. It is believed that this approach can provide a new pathway to designing chemical additives for further improving the efficiency and stability of PeSCs. |
| Databáze: | OpenAIRE |
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