Efficient and Stable Perovskite Solar Cells based on Nitrogen-Doped Carbon Nanodots
| Autor: | Silvia Collavini, Francesco Amato, Andrea Cabrera-Espinoza, Francesca Arcudi, Luka Đorđević, Ivet Kosta, Maurizio Prato, Juan Luis Delgado |
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| Přispěvatelé: | European Commission, Collavini, S., Amato, F., Cabrera-Espinoza, A., Arcudi, F., Dordevic, L., Kosta, I., Prato, M., Delgado, J. L. |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación Universidad de Cantabria (UC) |
| Popis: | The role of graphitic and amorphous nitrogen-doped carbon dots (N-CDs) as additives for perovskite solar cells (PSCs) is investigated. A detailed study of N-CDs: perovskite (PVSK) blends through X-ray diffraction, nuclear magnetic resonance, field emission scanning electron microscopy, UV-vis, and photoluminescence spectroscopy reveals the existence of interactions between N-CDs and PVSK. The amorphous or graphitic nature of these carbon nanoforms, as well as the interactions between CDs and PVSK, clearly determines the photovoltaic outcome of the PSCs. Thus, a small amount of graphitic carbon dots (g-N-CDs) leads to more-stable PSCs, while maintaining and even improving the power conversion efficiency (PCE). In addition, the long-term evaluation of the g-N-CDs-containing cells shows improvement of the PCE over time, up to 109% of the initial efficiency after 40 days while the reference performance is dropped to 86%. S.C. acknowledges the Polymat Foundation for a Postdoctoral research contract. J.L.D. acknowledges Ikerbasque, the Basque Foundation for Science, for an "Ikerbasque Research Associate" contract, the Polymat Foundation and the MINECO of Spain for RED2018-102815-T and RTI2018-101782-B-I00 grants. M.P. is the AXA Chair for Bionanotechnology (2016-2023). The authors gratefully acknowledge the financial support from the European Research Council (ERC AdG-2019 n degrees 885323, e-DOTS), the Spanish Ministerio de Ciencia, Innovacion y Universidades (project PID2019-108523RB-I00), the University of Trieste, INSTM, Italian Ministry of Education MIUR (cofin Prot. 2017PBXPN4) and the Maria de Maeztu Units of Excellence Program from the Spanish State Research Agency (Grant No. MDM-2017-0720). |
| Databáze: | OpenAIRE |
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