Suppression of ion migration through cross-linked PDMS doping to enhance the operational stability of perovskite solar cells
| Autor: | Fangsen Li, Changzeng Ding, X.F. Sun, Shuxuan Guo, Guanghui Han, Chang-Qi Ma, Yuanjie Li, Jiachen Kang, Qun Luo, Irfan Ismail, Rong Huang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polydimethylsiloxane Renewable Energy Sustainability and the Environment 020209 energy Doping 02 engineering and technology 021001 nanoscience & nanotechnology law.invention chemistry.chemical_compound Chemical engineering chemistry law Phase (matter) 0202 electrical engineering electronic engineering information engineering General Materials Science Crystallization 0210 nano-technology Short circuit Layer (electronics) Curing (chemistry) Perovskite (structure) |
| Zdroj: | Solar Energy. 217:105-112 |
| ISSN: | 0038-092X |
| DOI: | 10.1016/j.solener.2021.01.025 |
| Popis: | Although perovskite solar cells have achieved great development in the device performance, the device stability is still a crucial issue hinder the further development. The ion migration is a main reason for the poor stability of the perovskite solar cells. Here, we use a cross-linking material, polydimethylsiloxane (PDMS) to dope the perovskite layer to improve the operational stability. We systematically studied the effect of curing agent content in PDMS on the device performance and stability. The characterization of perovskite film indicates that PDMS primarily doped in the perovskite layer and as well as enriched at the surface of perovskite film. Doping of PDMS promoted the crystallization of perovskite phase, leading to increase of short circuit density (JSC) and fill factor (FF) of the solar cells. In addition, PDMS doping improved the operational stability of device due to the suppressing the migration of iodide ions during aging. Moreover, the higher content of curing agents used in PDMS, the better stability of the devices. This work indicates PDMS doping the perovskite layer with a suitable content of curing agent can produce a better operational stability of the perovskite solar cells. |
| Databáze: | OpenAIRE |
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