Elucidating the Trajectory of the Charge Transfer Mechanism and Recombination Process of Hybrid Perovskite Solar Cells
| Autor: | Lordwell Jhamba, Joseph K. Kirui, Kittessa T Roro, Adam Shnier, Daniel Wamwangi, Rudolph M. Erasmus, Bonex W. Mwakikunga, Solomon Akin Olaleru |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Photoluminescence Perovskite solar cell 02 engineering and technology 010402 general chemistry 01 natural sciences Article law.invention law ideality factor Solar cell General Materials Science Thin film Perovskite (structure) Microscopy QC120-168.85 QH201-278.5 Photovoltaic system Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology perovskite solar cell recombination TK1-9971 0104 chemical sciences Dielectric spectroscopy Descriptive and experimental mechanics Chemical physics interface Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology Recombination |
| Zdroj: | Materials Volume 14 Issue 11 Materials, Vol 14, Iss 2698, p 2698 (2021) |
| ISSN: | 1996-1944 |
| Popis: | Perovskite-based solar cells (PSCs) have attracted attraction in the photovoltaic community since their inception in 2009. To optimize the performance of hybrid perovskite cells, a primary and crucial strategy is to unravel the dominant charge transport mechanisms and interfacial properties of the contact materials. This study focused on the charge transfer process and interfacial recombination within the n–i–p architecture of solar cell devices. The motivation for this paper was to investigate the impacts of recombination mechanisms that exist within the interface in order to quantify their effects on the cell performance and stability. To achieve our objectives, we firstly provided a rationale for the photoluminescence and UV-Vis measurements on perovskite thin film to allow for disentangling of different recombination pathways. Secondly, we used the ideality factor and impedance spectroscopy measurements to investigate the recombination mechanisms in the device. Our findings suggest that charge loss in PSCs is dependent mainly on the configuration of the cells and layer morphology, and hardly on the material preparation of the perovskite itself. This was deduced from individual analyses of the perovskite film and device, which suggest that major recombination most likely occur at the interface. |
| Databáze: | OpenAIRE |
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