Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C
Thermal stability is a critical criterion for assessing the long‐term stability of perovskite solar cells (PSCs). Here, it is shown that un‐encapsulated co‐evaporated MAPbI3 (TE_MAPbI₃) PSCs demonstrate remarkable thermal stability even in an n‐i‐p structure that employs Spiro‐OMeTAD as hole transpo...
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sg-ntu-dr.10356-1469902023-09-20T09:01:36Z Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C Dewi, Herlina Arianita Li, Jia Wang, Hao Chaudhary, Bhumika Mathews, Nripan Mhaisalkar, Subodh Bruno, Annalisa Interdisciplinary Graduate School (IGS) School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Materials Co-evaporated Perovskite Metal-halide Perovskite Thermal stability is a critical criterion for assessing the long‐term stability of perovskite solar cells (PSCs). Here, it is shown that un‐encapsulated co‐evaporated MAPbI3 (TE_MAPbI₃) PSCs demonstrate remarkable thermal stability even in an n‐i‐p structure that employs Spiro‐OMeTAD as hole transport material (HTM). TE_MAPbI3 PSCs maintain over ≈95% and ≈80% of their initial power conversion efficiency (PCE) after 1000 and 3600 h respectively under continuous thermal aging at 85 °C. TE_MAPbI₃ PSCs demonstrate remarkable structural robustness, absence of pinholes, or significant variation in grain sizes, and intact interfaces with the HTM, upon prolonged thermal aging. Here, the main factors driving TE_MAPbI₃ stability are assessed. It is demonstrated that the excellent TE_MAPbI₃ thermal stability is related to the perovskite growth process leading to a compact and almost strain‐stress‐free film. On the other hand, un‐encapsulated PSCs with the same architecture, but incorporating solution‐processed MAPbI3 or Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 as active layers, show a complete PCE degradation after 500 h under the same thermal aging condition. These results highlight that the control of the perovskite growth process can substantially enhance the PSCs thermal stability, besides the chemical composition. The TE_MAPbI₃ impressive long‐term thermal stability features the potential for field‐operating conditions. National Research Foundation (NRF) This research was supported by the National Research Foundation, Prime Minister's Office, Singapore under the Solar CRP (S18‐1176‐SCRP), the Energy Innovation Research Program (NRF2015EWT‐EIRP003‐004), NRF‐CRP14‐2014‐03, and NRF2018‐ITC001‐001. 2021-04-23T00:31:22Z 2021-04-23T00:31:22Z 2021 Journal Article Dewi, H. A., Li, J., Wang, H., Chaudhary, B., Mathews, N., Mhaisalkar, S. & Bruno, A. (2021). Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C. Advanced Functional Materials, 31(22), 2100557-. https://dx.doi.org/10.1002/adfm.202100557 1616-301X 0000-0002-6963-1682 https://hdl.handle.net/10356/146990 10.1002/adfm.202100557 2-s2.0-85101069916 22 31 2100557 en S18‐1176‐SCRP NRF2015EWT‐EIRP003‐004 NRF‐CRP14‐2014‐03 NRF2018‐ITC001‐001 Advanced Functional Materials 10.21979/N9/UGAE5E This is the peer reviewed version of the following article: Dewi, H. A., Li, J., Wang, H., Chaudhary, B., Mathews, N., Mhaisalkar, S. & Bruno, A. (2021). Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C. Advanced Functional Materials, 31(22), 2100557-, which has been published in final form at http://doi.org/10.1002/adfm.202100557. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf application/pdf |
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Engineering::Materials Co-evaporated Perovskite Metal-halide Perovskite Dewi, Herlina Arianita Li, Jia Wang, Hao Chaudhary, Bhumika Mathews, Nripan Mhaisalkar, Subodh Bruno, Annalisa Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
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Thermal stability is a critical criterion for assessing the long‐term stability of perovskite solar cells (PSCs). Here, it is shown that un‐encapsulated co‐evaporated MAPbI3 (TE_MAPbI₃) PSCs demonstrate remarkable thermal stability even in an n‐i‐p structure that employs Spiro‐OMeTAD as hole transport material (HTM). TE_MAPbI3 PSCs maintain over ≈95% and ≈80% of their initial power conversion efficiency (PCE) after 1000 and 3600 h respectively under continuous thermal aging at 85 °C. TE_MAPbI₃ PSCs demonstrate remarkable structural robustness, absence of pinholes, or significant variation in grain sizes, and intact interfaces with the HTM, upon prolonged thermal aging. Here, the main factors driving TE_MAPbI₃ stability are assessed. It is demonstrated that the excellent TE_MAPbI₃ thermal stability is related to the perovskite growth process leading to a compact and almost strain‐stress‐free film. On the other hand, un‐encapsulated PSCs with the same architecture, but incorporating solution‐processed MAPbI3 or Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 as active layers, show a complete PCE degradation after 500 h under the same thermal aging condition. These results highlight that the control of the perovskite growth process can substantially enhance the PSCs thermal stability, besides the chemical composition. The TE_MAPbI₃ impressive long‐term thermal stability features the potential for field‐operating conditions. |
author2 |
Interdisciplinary Graduate School (IGS) |
author_facet |
Interdisciplinary Graduate School (IGS) Dewi, Herlina Arianita Li, Jia Wang, Hao Chaudhary, Bhumika Mathews, Nripan Mhaisalkar, Subodh Bruno, Annalisa |
format |
Article |
author |
Dewi, Herlina Arianita Li, Jia Wang, Hao Chaudhary, Bhumika Mathews, Nripan Mhaisalkar, Subodh Bruno, Annalisa |
author_sort |
Dewi, Herlina Arianita |
title |
Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
title_short |
Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
title_full |
Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
title_fullStr |
Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
title_full_unstemmed |
Excellent intrinsic long‐term thermal stability of co‐evaporated MAPbI₃ solar cells at 85 °C |
title_sort |
excellent intrinsic long‐term thermal stability of co‐evaporated mapbi₃ solar cells at 85 °c |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/146990 |
_version_ |
1779156409524420608 |