Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/23822
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Xu, Gu | - |
dc.contributor.author | Tai, Guangqing | - |
dc.date.accessioned | 2019-01-25T21:16:49Z | - |
dc.date.available | 2019-01-25T21:16:49Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://hdl.handle.net/11375/23822 | - |
dc.description | This is a modified version for my previous uploaded thesis. | en_US |
dc.description.abstract | Organic-inorganic hybrid halide perovskite solar cells (PSCs) have been a trending topic in recent years. Significant progress has been made to increase their power conversion efficiency (PCE) to more than 20%. However, the poor stability of PSCs in both working and non-working conditions results in rapid degradation through multiple environmental erosions such as water, heat, and UV light. Attempts have been made to resolve the rapid-degradation problems, including formula changes, transport layer improvements, and encapsulations, but none of these have effectively resolved the dilemma. This thesis reports our findings on adding inorganic films as surface-passivation layers on top of the hybrid perovskite materials, which not only enhance stability by eliminating weak sites but also prevent water penetration by using a water-stable layer. The surface-passivated hybrid perovskite layer indicates a slight increase of bandgap energy (Eg=1.76 eV), compared to the original methylammonium lead iodide (MAPbI3, Eg=1.61 eV) layer, allowing for more stable perovskite layer with a small sacrifice in the photoluminescence property, which represents a lower charge diffusion rate and higher bandgap energy. Our finding offers an alternative approach to resolving the low stability issue for PSC fabrication. | en_US |
dc.language.iso | en | en_US |
dc.title | A WATER-STABLE HYBRID ORGANIC-INORGANIC PEROVSKITE FOR SOLAR CELLS BY INORGANIC PASSIVATION | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Materials Science and Engineering | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Applied Science (MASc) | en_US |
dc.description.layabstract | Perovskite solar cells involving organic-inorganic materials present a great efficiency of converting solar energy to electricity, while the cost of raw materials and fabrication is much lower than traditional silicon solar cells. It has the potential to replace the conventional silicon solar cell panels to harvest the energy from the Sun with an easier manufacturing process. The problem before the commercialization step of perovskite solar cells is the short lifetime. In our report, we added an extra inorganic material on the surface of the perovskite layer for solar cell application, which reduces the water-induced degradation speed by establishing protective layer. | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Guangqing Tai, Master's Thesis, materials science and engineering.docx | 9.65 MB | Microsoft Word XML | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.