Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells
Perovskite Solar Cells are a promising solar energy harvesting technology due to their low cost and high-power conversion efficiency. A high-quality perovskite layer is fundamental for a highly efficient perovskite Solar Cell. Utilizing a gas quenching process (GQP) can eliminate the need for toxic,...
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MDPI AG
2022-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/5/610 |
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| author | Lin Zhang Lin Yao Yanfang Chu Lei Zhao Hongmei Zhao Yuchen Sun Jing Li Junjie He |
| author_facet | Lin Zhang Lin Yao Yanfang Chu Lei Zhao Hongmei Zhao Yuchen Sun Jing Li Junjie He |
| author_sort | Lin Zhang |
| collection | DOAJ |
| description | Perovskite Solar Cells are a promising solar energy harvesting technology due to their low cost and high-power conversion efficiency. A high-quality perovskite layer is fundamental for a highly efficient perovskite Solar Cell. Utilizing a gas quenching process (GQP) can eliminate the need for toxic, flammable, and expensive anti-solvents in the preparation of perovskite layers. It is a promising candidate technology for large scale preparation of perovskite layers, as it can be easily integrated in a production line by coupling up-scalable techniques. The GQP removes the need for polar solvents in the precursor solution layer by using nitrogen flow, rather than extracting them with non-polar solvents. The crystallization dynamics in this process can be significantly different. In this study, we found that the quality of perovskite crystal from GQP is much more sensitive to Lewis base molecules (LBMs) in the precursor solution than it is in anti-solvents technology. Thus, the processing parameters of the LBMs in anti-solvents technology cannot be directly transferred to the GQP. An XRD and <sup>1</sup>H NMR study explains the origin of the S-shaped <i>J</i>–<i>V</i> curves and how these LBMs hinder the reaction between PbI<sub>2</sub> and monovelent cations. |
| first_indexed | 2024-03-10T03:06:07Z |
| format | Article |
| id | doaj.art-c47a6e68f79b4af2bc53c8246ae9d5c4 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T03:06:07Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-c47a6e68f79b4af2bc53c8246ae9d5c42023-11-23T10:34:24ZengMDPI AGCrystals2073-43522022-04-0112561010.3390/cryst12050610Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar CellsLin Zhang0Lin Yao1Yanfang Chu2Lei Zhao3Hongmei Zhao4Yuchen Sun5Jing Li6Junjie He7Biomass New Materials Research Center, College of Architectural Engineering, Yunnan Agricultural University, Kunming 650201, ChinaBiomass New Materials Research Center, College of Architectural Engineering, Yunnan Agricultural University, Kunming 650201, ChinaThe Key Laboratory for Crop Production and Smart Agriculture of Yunnan Province, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Science, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Science, Yunnan Agricultural University, Kunming 650201, ChinaBiomass New Materials Research Center, College of Architectural Engineering, Yunnan Agricultural University, Kunming 650201, ChinaThe Key Laboratory for Crop Production and Smart Agriculture of Yunnan Province, Yunnan Agricultural University, Kunming 650201, ChinaBiomass New Materials Research Center, College of Architectural Engineering, Yunnan Agricultural University, Kunming 650201, ChinaPerovskite Solar Cells are a promising solar energy harvesting technology due to their low cost and high-power conversion efficiency. A high-quality perovskite layer is fundamental for a highly efficient perovskite Solar Cell. Utilizing a gas quenching process (GQP) can eliminate the need for toxic, flammable, and expensive anti-solvents in the preparation of perovskite layers. It is a promising candidate technology for large scale preparation of perovskite layers, as it can be easily integrated in a production line by coupling up-scalable techniques. The GQP removes the need for polar solvents in the precursor solution layer by using nitrogen flow, rather than extracting them with non-polar solvents. The crystallization dynamics in this process can be significantly different. In this study, we found that the quality of perovskite crystal from GQP is much more sensitive to Lewis base molecules (LBMs) in the precursor solution than it is in anti-solvents technology. Thus, the processing parameters of the LBMs in anti-solvents technology cannot be directly transferred to the GQP. An XRD and <sup>1</sup>H NMR study explains the origin of the S-shaped <i>J</i>–<i>V</i> curves and how these LBMs hinder the reaction between PbI<sub>2</sub> and monovelent cations.https://www.mdpi.com/2073-4352/12/5/610perovskitephotovoltaiccurrent-voltage characteristic curvesLewis base |
| spellingShingle | Lin Zhang Lin Yao Yanfang Chu Lei Zhao Hongmei Zhao Yuchen Sun Jing Li Junjie He Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells Crystals perovskite photovoltaic current-voltage characteristic curves Lewis base |
| title | Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells |
| title_full | Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells |
| title_fullStr | Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells |
| title_full_unstemmed | Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells |
| title_short | Hydrogen Bonds in Precursor Solution: The Origin of the Anomalous <i>J</i>–<i>V</i> Curves in Perovskite Solar Cells |
| title_sort | hydrogen bonds in precursor solution the origin of the anomalous i j i i v i curves in perovskite solar cells |
| topic | perovskite photovoltaic current-voltage characteristic curves Lewis base |
| url | https://www.mdpi.com/2073-4352/12/5/610 |
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