Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells
Abstract Infrared solar cells are more effective than normal bandgap solar cells at reducing the spectral loss in the near-infrared region, thus also at broadening the absorption spectra and improving power conversion efficiency. PbS colloidal quantum dots (QDs) with tunable bandgap are ideal infrar...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer & Higher Education Press
2023-10-01
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| Series: | Frontiers of Optoelectronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s12200-023-00085-0 |
| _version_ | 1797647378449170432 |
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| author | Xinzhao Zhao Mingyu Li Tianjun Ma Jun Yan Gomaa Mohamed Gomaa Khalaf Chao Chen Hsien-Yi Hsu Haisheng Song Jiang Tang |
| author_facet | Xinzhao Zhao Mingyu Li Tianjun Ma Jun Yan Gomaa Mohamed Gomaa Khalaf Chao Chen Hsien-Yi Hsu Haisheng Song Jiang Tang |
| author_sort | Xinzhao Zhao |
| collection | DOAJ |
| description | Abstract Infrared solar cells are more effective than normal bandgap solar cells at reducing the spectral loss in the near-infrared region, thus also at broadening the absorption spectra and improving power conversion efficiency. PbS colloidal quantum dots (QDs) with tunable bandgap are ideal infrared photovoltaic materials. However, QD solar cell production suffers from small-area-based spin-coating fabrication methods and unstable QD ink. Herein, the QD ink stability mechanism was fully investigated according to Lewis acid–base theory and colloid stability theory. We further studied a mixed solvent system using dimethylformamide and butylamine, compatible with the scalable manufacture of method-blade coating. Based on the ink system, 100 cm2 of uniform and dense near-infrared PbS QDs (~ 0.96 eV) film was successfully prepared by blade coating. The average efficiencies of above absorber-based devices reached 11.14% under AM1.5G illumination, and the 800 nm-filtered efficiency achieved 4.28%. Both were the top values among blade coating method based devices. The newly developed ink showed excellent stability, and the device performance based on the ink stored for 7 h was similar to that of fresh ink. The matched solvent system for stable PbS QD ink represents a crucial step toward large area blade coating photoelectric devices. Graphical Abstract |
| first_indexed | 2024-03-11T15:15:26Z |
| format | Article |
| id | doaj.art-048cb03d7d18485ca6b7f783363f230a |
| institution | Directory Open Access Journal |
| issn | 2095-2767 |
| language | English |
| last_indexed | 2024-03-11T15:15:26Z |
| publishDate | 2023-10-01 |
| publisher | Springer & Higher Education Press |
| record_format | Article |
| series | Frontiers of Optoelectronics |
| spelling | doaj.art-048cb03d7d18485ca6b7f783363f230a2023-10-29T12:14:26ZengSpringer & Higher Education PressFrontiers of Optoelectronics2095-27672023-10-0116111010.1007/s12200-023-00085-0Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cellsXinzhao Zhao0Mingyu Li1Tianjun Ma2Jun Yan3Gomaa Mohamed Gomaa Khalaf4Chao Chen5Hsien-Yi Hsu6Haisheng Song7Jiang Tang8Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST)School of Energy and Environment and Department of Materials Science and Engineering, City University of Hong KongWuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST)Abstract Infrared solar cells are more effective than normal bandgap solar cells at reducing the spectral loss in the near-infrared region, thus also at broadening the absorption spectra and improving power conversion efficiency. PbS colloidal quantum dots (QDs) with tunable bandgap are ideal infrared photovoltaic materials. However, QD solar cell production suffers from small-area-based spin-coating fabrication methods and unstable QD ink. Herein, the QD ink stability mechanism was fully investigated according to Lewis acid–base theory and colloid stability theory. We further studied a mixed solvent system using dimethylformamide and butylamine, compatible with the scalable manufacture of method-blade coating. Based on the ink system, 100 cm2 of uniform and dense near-infrared PbS QDs (~ 0.96 eV) film was successfully prepared by blade coating. The average efficiencies of above absorber-based devices reached 11.14% under AM1.5G illumination, and the 800 nm-filtered efficiency achieved 4.28%. Both were the top values among blade coating method based devices. The newly developed ink showed excellent stability, and the device performance based on the ink stored for 7 h was similar to that of fresh ink. The matched solvent system for stable PbS QD ink represents a crucial step toward large area blade coating photoelectric devices. Graphical Abstracthttps://doi.org/10.1007/s12200-023-00085-0PbS quantum dotsSolvent engineeringColloid stabilityBlade coatingInfrared solar cells |
| spellingShingle | Xinzhao Zhao Mingyu Li Tianjun Ma Jun Yan Gomaa Mohamed Gomaa Khalaf Chao Chen Hsien-Yi Hsu Haisheng Song Jiang Tang Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells Frontiers of Optoelectronics PbS quantum dots Solvent engineering Colloid stability Blade coating Infrared solar cells |
| title | Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells |
| title_full | Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells |
| title_fullStr | Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells |
| title_full_unstemmed | Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells |
| title_short | Stable PbS colloidal quantum dot inks enable blade-coating infrared solar cells |
| title_sort | stable pbs colloidal quantum dot inks enable blade coating infrared solar cells |
| topic | PbS quantum dots Solvent engineering Colloid stability Blade coating Infrared solar cells |
| url | https://doi.org/10.1007/s12200-023-00085-0 |
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