Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells
The attainment of a well-crystallized photo-absorbing layer with minimal defects is crucial for achieving high photovoltaic performance in polycrystalline solar cells. However, in the case of perovskite solar cells (PSCs), precise control over crystallization and elemental distribution through solut...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/28/14/5542 |
| _version_ | 1797588038026526720 |
|---|---|
| author | Fengyou Wang Jinyue Du Chenyu Zhao Yutao Li Maobin Wei Huilian Liu Jinghai Yang Lili Yang |
| author_facet | Fengyou Wang Jinyue Du Chenyu Zhao Yutao Li Maobin Wei Huilian Liu Jinghai Yang Lili Yang |
| author_sort | Fengyou Wang |
| collection | DOAJ |
| description | The attainment of a well-crystallized photo-absorbing layer with minimal defects is crucial for achieving high photovoltaic performance in polycrystalline solar cells. However, in the case of perovskite solar cells (PSCs), precise control over crystallization and elemental distribution through solution processing remains a challenge. In this study, we propose the use of a multifunctional molecule, α-amino-γ-butyrolactone (ABL), as a modulator to simultaneously enhance crystallization and passivate defects, thereby improving film quality and deactivating nonradiative recombination centers in the perovskite absorber. The Lewis base groups present in ABL facilitate nucleation, leading to enhanced crystallinity, while also retarding crystallization. Additionally, ABL effectively passivates Pb<sup>2+</sup> dangling bonds, which are major deep-level defects in perovskite films. This passivation process reduces recombination losses, promotes carrier transfer and extraction, and further improves efficiency. Consequently, the PSCs incorporating the ABL additive exhibit an increase in conversion efficiency from 18.30% to 20.36%, along with improved long-term environmental stability. We believe that this research will contribute to the design of additive molecular structures and the engineering of components in perovskite precursor colloids. |
| first_indexed | 2024-03-11T00:47:15Z |
| format | Article |
| id | doaj.art-c986cad3783b42a3b7a422651b14e91b |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T00:47:15Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-c986cad3783b42a3b7a422651b14e91b2023-11-18T20:43:37ZengMDPI AGMolecules1420-30492023-07-012814554210.3390/molecules28145542Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar CellsFengyou Wang0Jinyue Du1Chenyu Zhao2Yutao Li3Maobin Wei4Huilian Liu5Jinghai Yang6Lili Yang7Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaThe attainment of a well-crystallized photo-absorbing layer with minimal defects is crucial for achieving high photovoltaic performance in polycrystalline solar cells. However, in the case of perovskite solar cells (PSCs), precise control over crystallization and elemental distribution through solution processing remains a challenge. In this study, we propose the use of a multifunctional molecule, α-amino-γ-butyrolactone (ABL), as a modulator to simultaneously enhance crystallization and passivate defects, thereby improving film quality and deactivating nonradiative recombination centers in the perovskite absorber. The Lewis base groups present in ABL facilitate nucleation, leading to enhanced crystallinity, while also retarding crystallization. Additionally, ABL effectively passivates Pb<sup>2+</sup> dangling bonds, which are major deep-level defects in perovskite films. This passivation process reduces recombination losses, promotes carrier transfer and extraction, and further improves efficiency. Consequently, the PSCs incorporating the ABL additive exhibit an increase in conversion efficiency from 18.30% to 20.36%, along with improved long-term environmental stability. We believe that this research will contribute to the design of additive molecular structures and the engineering of components in perovskite precursor colloids.https://www.mdpi.com/1420-3049/28/14/5542polycrystalline thin filmsurface passivationnucleationnonradiative recombinationperovskite solar cells |
| spellingShingle | Fengyou Wang Jinyue Du Chenyu Zhao Yutao Li Maobin Wei Huilian Liu Jinghai Yang Lili Yang Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells Molecules polycrystalline thin film surface passivation nucleation nonradiative recombination perovskite solar cells |
| title | Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells |
| title_full | Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells |
| title_fullStr | Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells |
| title_full_unstemmed | Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells |
| title_short | Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells |
| title_sort | modulating crystallization and defect passivation by butyrolactone molecule for perovskite solar cells |
| topic | polycrystalline thin film surface passivation nucleation nonradiative recombination perovskite solar cells |
| url | https://www.mdpi.com/1420-3049/28/14/5542 |
| work_keys_str_mv | AT fengyouwang modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT jinyuedu modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT chenyuzhao modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT yutaoli modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT maobinwei modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT huilianliu modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT jinghaiyang modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells AT liliyang modulatingcrystallizationanddefectpassivationbybutyrolactonemoleculeforperovskitesolarcells |