One‐Step Thermal Gradient‐ and Antisolvent‐Free Crystallization of All‐Inorganic Perovskites for Highly Efficient and Thermally Stable Solar Cells
Abstract
Abstract All‐inorganic perovskites have emerged as promising photovoltaic materials due to their superior thermal stability compared to their heat‐sensitive hybrid organic–inorganic counterparts. In particular, CsPbI 2 Br shows the highest potential for developing thermally‐stable perovskite solar cells (PSCs) among all‐inorganic compositions. However, controlling the crystallinity and morphology of all‐inorganic compositions is a significant challenge. Here, a simple, thermal gradient‐ and antisolvent‐free method is reported to control the crystallization of CsPbI 2 Br films. Optical in situ characterization is used to investigate the dynamic film formation during spin‐coating and annealing to understand and optimize the evolving film properties. This leads to high‐quality perovskite films with micrometer‐scale grain sizes with a noteworthy performance of 17% (≈16% stabilized), fill factor (FF) of 80.5%, and open‐circuit voltage ( V OC ) of 1.27 V. Moreover, excellent phase and thermal stability are demonstrated even after extreme thermal stressing at 300 °C.
- Authors:
-
[1];
[1]
- Institute for Photovoltaics (ipv) University of Stuttgart Pfaffenwaldring 47 70569 Stuttgart Germany, Helmholtz Young Investigator Group FRONTRUNNER IEK5‐Photovoltaik Forschungszentrum Jülich 52425 Jülich Germany
- Molecular Foundry Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Institute for Photovoltaics (ipv) University of Stuttgart Pfaffenwaldring 47 70569 Stuttgart Germany
- Zentrum für Sonnenenergie‐ und Wasserstoff‐Forschung Baden‐Württemberg (ZSW) 70563 Stuttgart Germany
- Materials Sciences Division Lawrence Berkeley Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Institute for Materials Science Chemical Materials Synthesis University of Stuttgart 70569 Stuttgart Germany
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG); Spanish Ministry of Science and Education; Federal Ministry for Economic Affairs and Energy; Israel Ministry of Energy; National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1873041
- Alternate Identifier(s):
- OSTI ID: 1876850; OSTI ID: 1889777
- Grant/Contract Number:
- DE‐AC02‐05CH11231; AC02-05CH11231; GRK-2642; SPP-2196; 431314977; KO6414; PCI2020-112185; IDI-20210171; FKZ03EE1070B; FKZ03EE1070A; 220-11-031; 2021R1A6A3A03039891
- Resource Type:
- Published Article
- Journal Name:
- Advanced Science
- Additional Journal Information:
- Journal Name: Advanced Science Journal Volume: 9 Journal Issue: 23; Journal ID: ISSN 2198-3844
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Byranvand, Mahdi Malekshahi, Kodalle, Tim, Zuo, Weiwei, Magorian Friedlmeier, Theresa, Abdelsamie, Maged, Hong, Kootak, Zia, Waqas, Perween, Shama, Clemens, Oliver, Sutter‐Fella, Carolin M., and Saliba, Michael. One‐Step Thermal Gradient‐ and Antisolvent‐Free Crystallization of All‐Inorganic Perovskites for Highly Efficient and Thermally Stable Solar Cells. Germany: N. p., 2022.
Web. doi:10.1002/advs.202202441.
Byranvand, Mahdi Malekshahi, Kodalle, Tim, Zuo, Weiwei, Magorian Friedlmeier, Theresa, Abdelsamie, Maged, Hong, Kootak, Zia, Waqas, Perween, Shama, Clemens, Oliver, Sutter‐Fella, Carolin M., & Saliba, Michael. One‐Step Thermal Gradient‐ and Antisolvent‐Free Crystallization of All‐Inorganic Perovskites for Highly Efficient and Thermally Stable Solar Cells. Germany. https://doi.org/10.1002/advs.202202441
Byranvand, Mahdi Malekshahi, Kodalle, Tim, Zuo, Weiwei, Magorian Friedlmeier, Theresa, Abdelsamie, Maged, Hong, Kootak, Zia, Waqas, Perween, Shama, Clemens, Oliver, Sutter‐Fella, Carolin M., and Saliba, Michael. Sun .
"One‐Step Thermal Gradient‐ and Antisolvent‐Free Crystallization of All‐Inorganic Perovskites for Highly Efficient and Thermally Stable Solar Cells". Germany. https://doi.org/10.1002/advs.202202441.
@article{osti_1873041,
title = {One‐Step Thermal Gradient‐ and Antisolvent‐Free Crystallization of All‐Inorganic Perovskites for Highly Efficient and Thermally Stable Solar Cells},
author = {Byranvand, Mahdi Malekshahi and Kodalle, Tim and Zuo, Weiwei and Magorian Friedlmeier, Theresa and Abdelsamie, Maged and Hong, Kootak and Zia, Waqas and Perween, Shama and Clemens, Oliver and Sutter‐Fella, Carolin M. and Saliba, Michael},
abstractNote = {Abstract All‐inorganic perovskites have emerged as promising photovoltaic materials due to their superior thermal stability compared to their heat‐sensitive hybrid organic–inorganic counterparts. In particular, CsPbI 2 Br shows the highest potential for developing thermally‐stable perovskite solar cells (PSCs) among all‐inorganic compositions. However, controlling the crystallinity and morphology of all‐inorganic compositions is a significant challenge. Here, a simple, thermal gradient‐ and antisolvent‐free method is reported to control the crystallization of CsPbI 2 Br films. Optical in situ characterization is used to investigate the dynamic film formation during spin‐coating and annealing to understand and optimize the evolving film properties. This leads to high‐quality perovskite films with micrometer‐scale grain sizes with a noteworthy performance of 17% (≈16% stabilized), fill factor (FF) of 80.5%, and open‐circuit voltage ( V OC ) of 1.27 V. Moreover, excellent phase and thermal stability are demonstrated even after extreme thermal stressing at 300 °C.},
doi = {10.1002/advs.202202441},
journal = {Advanced Science},
number = 23,
volume = 9,
place = {Germany},
year = {Sun Jun 19 00:00:00 EDT 2022},
month = {Sun Jun 19 00:00:00 EDT 2022}
}
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