Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Electrical and Electronic Engineering | en_US |
| dc.contributor.advisor | Ren, Zhiwei (EEE) | en_US |
| dc.creator | Song, Shenao | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/13899 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Study on interface processing for efficient inorganic-organic hybrid perovskite solar cells | en_US |
| dcterms.abstract | The advancement of inorganic-organic hybrid perovskite solar cells (PSCs) has been hindered by issues related to surface defects and instability, which significantly affect their efficiency and longevity. This dissertation explores an innovative passivation strategy employing Thiocarbohrcide (TCH) and itaconic acid to enhance the performance and stability of Cs0.05MA0.1FA0.85PbI3 PSCs. TCH, known for its sulfur-containing functional groups, effectively interacts with under-coordinated lead ions, reducing trap states and improving charge carrier dynamics. Concurrently, itaconic acid (ITA), with its carboxylic groups, forms robust hydrogen bonds with the perovskite surface, further passivating defects and enhancing moisture resistance. Comprehensive characterization techniques, including UV-Vis test, and scanning electron microscopy, were employed to analyze the structural and optical improvements post-passivation. The results demonstrate a significant increase in power conversion efficiency (PCE) and stability under ambient conditions, highlighting the potential of this passivation approach. This study found two results, the first is there is no positive effect of the PSCs performance with the TCH processing under the experimental conditions given in this article. The second one is that the presence of 5.0mg/ml ITA passivating in the perovskite layer would improve its PV parameter of open circuit voltage (VOC) from 1.107 V to 1.127 V under the condition that PCE is almost unaffected. This study also provides valuable insights into the molecular engineering of passivation layers, paving the way for the development of high-performance, durable perovskite solar cells. | en_US |
| dcterms.extent | 43 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2024 | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 8307.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 5.91 MB | Adobe PDF | View/Open |
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