Development of perovskite-based light emitting diodes with improved stability 4.0
It has been found that all-inorganic Cesium Lead Halide CsPbX3 (X= Cl, Br, I) perovskite quantum dots are potential luminescent candidates which are promising materials for optoelectronics and future energy applications. However, a major obstacle that perovskites faced is the overcoming of its poor...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/139631 |
| _version_ | 1811695639439867904 |
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| author | Keng, Jia Qi |
| author2 | Yong Ken Tye |
| author_facet | Yong Ken Tye Keng, Jia Qi |
| author_sort | Keng, Jia Qi |
| collection | NTU |
| description | It has been found that all-inorganic Cesium Lead Halide CsPbX3 (X= Cl, Br, I) perovskite quantum dots are potential luminescent candidates which are promising materials for optoelectronics and future energy applications. However, a major obstacle that perovskites faced is the overcoming of its poor stability. With degradation factors from the environment condition, it causes these perovskites to be affected. Hence, in this project, several experiments are carried out to improve the stability of the perovskite quantum dots. Microwave irradiation, hot-injection method and precipitation method are conducted to test for the luminescence and photoluminescence quantum yield of the purified nanocrystals obtained from the experiment. To improve the stability of perovskite quantum dots, type of ligand used in the synthesis method will be substituted by 3-Aminopropyltriethoxysilane. By measuring the photoluminescence quantum dots, it deduced that the substitution of ligand is able to improve the stability of the perovskite quantum dots. |
| first_indexed | 2024-10-01T07:26:40Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/139631 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:26:40Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1396312023-07-07T18:23:36Z Development of perovskite-based light emitting diodes with improved stability 4.0 Keng, Jia Qi Yong Ken Tye School of Electrical and Electronic Engineering Photonics Research Centre ktyong@ntu.edu.sg Engineering::Electrical and electronic engineering It has been found that all-inorganic Cesium Lead Halide CsPbX3 (X= Cl, Br, I) perovskite quantum dots are potential luminescent candidates which are promising materials for optoelectronics and future energy applications. However, a major obstacle that perovskites faced is the overcoming of its poor stability. With degradation factors from the environment condition, it causes these perovskites to be affected. Hence, in this project, several experiments are carried out to improve the stability of the perovskite quantum dots. Microwave irradiation, hot-injection method and precipitation method are conducted to test for the luminescence and photoluminescence quantum yield of the purified nanocrystals obtained from the experiment. To improve the stability of perovskite quantum dots, type of ligand used in the synthesis method will be substituted by 3-Aminopropyltriethoxysilane. By measuring the photoluminescence quantum dots, it deduced that the substitution of ligand is able to improve the stability of the perovskite quantum dots. Bachelor of Engineering (Electrical and Electronic Engineering) 2020-05-20T08:55:33Z 2020-05-20T08:55:33Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/139631 en A2236-191 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Electrical and electronic engineering Keng, Jia Qi Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title | Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title_full | Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title_fullStr | Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title_full_unstemmed | Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title_short | Development of perovskite-based light emitting diodes with improved stability 4.0 |
| title_sort | development of perovskite based light emitting diodes with improved stability 4 0 |
| topic | Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/139631 |
| work_keys_str_mv | AT kengjiaqi developmentofperovskitebasedlightemittingdiodeswithimprovedstability40 |