An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918091225563136 |
|---|---|
| author | Wu, Xianhu Xia, Gaojie Cui, Guanglei Bi, Jieyu Liu, Nian Jiang, Jiaxin Sun, Jilong Liu, Luyang Li, Ping Lu, Ning Zuo, Zewen Gu, Min |
| author_facet | Wu, Xianhu Xia, Gaojie Cui, Guanglei Bi, Jieyu Liu, Nian Jiang, Jiaxin Sun, Jilong Liu, Luyang Li, Ping Lu, Ning Zuo, Zewen Gu, Min |
| contents | The grain boundaries of perovskite films prepared by the solution method are highly disordered, with a large number of defects existing at the grain boundaries. These defect sites promote the decomposition of perovskite. Here, we use ribavirin obtained through bacillus subtilis fermentation to regulate the crystal growth of perovskite, inducing changes in the work function and energy level structure of perovskite, which significantly reduces the defect density. Based on density functional theory calculations, the defect formation energies of VI, VMA, VPb, and PbI in perovskite are improved. This increases the open-circuit voltage of perovskite solar cells (PSCs) (ITO/PEDOT:PSS/perovskite/PCBM/BCP/Ag) from 1.077 to 1.151 V, and the PCE increases significantly from 17.05% to 19.86%. Unencapsulated PSCs were stored in the environment (humidity approximately 35+-5%) for long-term stability testing. After approximately 900 hours of storage, the PCE of the ribavirin-based device retains 84.33% of its initial PCE, while the control-based device retains only 13.44% of its initial PCE. The PCE of PSCs (ITO/SnO2/perovskite/Spiro-OMETAD/Ag) is increased from 20.16% to 22.14%, demonstrating the universality of this doping method. This universal doping strategy provides a new approach for improving the efficiency and stability of PSCs using green molecular doping strategies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_10557 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells Wu, Xianhu Xia, Gaojie Cui, Guanglei Bi, Jieyu Liu, Nian Jiang, Jiaxin Sun, Jilong Liu, Luyang Li, Ping Lu, Ning Zuo, Zewen Gu, Min Materials Science Applied Physics The grain boundaries of perovskite films prepared by the solution method are highly disordered, with a large number of defects existing at the grain boundaries. These defect sites promote the decomposition of perovskite. Here, we use ribavirin obtained through bacillus subtilis fermentation to regulate the crystal growth of perovskite, inducing changes in the work function and energy level structure of perovskite, which significantly reduces the defect density. Based on density functional theory calculations, the defect formation energies of VI, VMA, VPb, and PbI in perovskite are improved. This increases the open-circuit voltage of perovskite solar cells (PSCs) (ITO/PEDOT:PSS/perovskite/PCBM/BCP/Ag) from 1.077 to 1.151 V, and the PCE increases significantly from 17.05% to 19.86%. Unencapsulated PSCs were stored in the environment (humidity approximately 35+-5%) for long-term stability testing. After approximately 900 hours of storage, the PCE of the ribavirin-based device retains 84.33% of its initial PCE, while the control-based device retains only 13.44% of its initial PCE. The PCE of PSCs (ITO/SnO2/perovskite/Spiro-OMETAD/Ag) is increased from 20.16% to 22.14%, demonstrating the universality of this doping method. This universal doping strategy provides a new approach for improving the efficiency and stability of PSCs using green molecular doping strategies. |
| title | An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2507.10557 |