Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array
Abstract Perovskite solar cells are used in silicon-based tandem solar cells due to their tunable band gap, high absorption coefficient and low preparation cost. However, the relatively large optical refractive index of bottom silicon, in comparison with that of top perovskite absorber layers, resul...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-11-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-020-03445-3 |
| _version_ | 1827852949451177984 |
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| author | Yawei Kuang Yulong Ma Debao Zhang Qingzhu Wei Shuchang Wang Xifeng Yang Xuekun Hong Yushen Liu |
| author_facet | Yawei Kuang Yulong Ma Debao Zhang Qingzhu Wei Shuchang Wang Xifeng Yang Xuekun Hong Yushen Liu |
| author_sort | Yawei Kuang |
| collection | DOAJ |
| description | Abstract Perovskite solar cells are used in silicon-based tandem solar cells due to their tunable band gap, high absorption coefficient and low preparation cost. However, the relatively large optical refractive index of bottom silicon, in comparison with that of top perovskite absorber layers, results in significant reflection losses in two-terminal devices. Therefore, light management is crucial to improve photocurrent absorption in the Si bottom cell. In this paper, nanoholes array filled with TiO2 is introduced into bottom cells design. By finite-difference time-domain methods, the absorption efficiency and photocurrent density in the range of 300–1100 nm has been analyzed, and the structural parameters have been also optimized. Our calculations show the photocurrent density which tends to be saturated with the increase in the height of the nanoholes. The absorption enhancement modes of photons at different wavelengths have been analyzed intuitively by the distribution of electric field. These results enable a viable and convenient route toward high efficiency design of perovskite/Si tandem solar cells. |
| first_indexed | 2024-03-12T10:58:34Z |
| format | Article |
| id | doaj.art-6d2b48fea8c447658cbf8e5eb7460a2b |
| institution | Directory Open Access Journal |
| issn | 1556-276X |
| language | English |
| last_indexed | 2024-03-12T10:58:34Z |
| publishDate | 2020-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-6d2b48fea8c447658cbf8e5eb7460a2b2023-09-02T06:00:09ZengSpringerOpenNanoscale Research Letters1556-276X2020-11-011511610.1186/s11671-020-03445-3Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes ArrayYawei Kuang0Yulong Ma1Debao Zhang2Qingzhu Wei3Shuchang Wang4Xifeng Yang5Xuekun Hong6Yushen Liu7School of Electronics and Information Engineering, Changshu Institute of TechnologySchool of Electronics and Information Engineering, Changshu Institute of TechnologySchool of Electronics and Information Engineering, Changshu Institute of TechnologySuzhou Talesun Solar Technologies Co., Ltd.School of Electronics and Information Engineering, Changshu Institute of TechnologySchool of Electronics and Information Engineering, Changshu Institute of TechnologySchool of Electronics and Information Engineering, Changshu Institute of TechnologySchool of Electronics and Information Engineering, Changshu Institute of TechnologyAbstract Perovskite solar cells are used in silicon-based tandem solar cells due to their tunable band gap, high absorption coefficient and low preparation cost. However, the relatively large optical refractive index of bottom silicon, in comparison with that of top perovskite absorber layers, results in significant reflection losses in two-terminal devices. Therefore, light management is crucial to improve photocurrent absorption in the Si bottom cell. In this paper, nanoholes array filled with TiO2 is introduced into bottom cells design. By finite-difference time-domain methods, the absorption efficiency and photocurrent density in the range of 300–1100 nm has been analyzed, and the structural parameters have been also optimized. Our calculations show the photocurrent density which tends to be saturated with the increase in the height of the nanoholes. The absorption enhancement modes of photons at different wavelengths have been analyzed intuitively by the distribution of electric field. These results enable a viable and convenient route toward high efficiency design of perovskite/Si tandem solar cells.http://link.springer.com/article/10.1186/s11671-020-03445-3Tandem solar cellNanoholes arrayAnti-reflectionResonance absorption |
| spellingShingle | Yawei Kuang Yulong Ma Debao Zhang Qingzhu Wei Shuchang Wang Xifeng Yang Xuekun Hong Yushen Liu Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array Nanoscale Research Letters Tandem solar cell Nanoholes array Anti-reflection Resonance absorption |
| title | Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array |
| title_full | Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array |
| title_fullStr | Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array |
| title_full_unstemmed | Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array |
| title_short | Enhanced Optical Absorption in Perovskite/Si Tandem Solar Cells with Nanoholes Array |
| title_sort | enhanced optical absorption in perovskite si tandem solar cells with nanoholes array |
| topic | Tandem solar cell Nanoholes array Anti-reflection Resonance absorption |
| url | http://link.springer.com/article/10.1186/s11671-020-03445-3 |
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