Development of perovskite-based light emitting diodes with improved stability
All-inorganic CsPbX3 (X = I, Br, Cl) perovskite quantum dots have recently been proven to show characteristics that enables it to be a highly suitable optoelectronic material. However, there is a pressing problem faced by the perovskite quantum dots involving the instability caused by the high deloc...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2019
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| Online Access: | http://hdl.handle.net/10356/78795 |
| _version_ | 1811680793908477952 |
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| author | Lee, Jack Min Chong |
| author2 | Yong Ken Tye |
| author_facet | Yong Ken Tye Lee, Jack Min Chong |
| author_sort | Lee, Jack Min Chong |
| collection | NTU |
| description | All-inorganic CsPbX3 (X = I, Br, Cl) perovskite quantum dots have recently been proven to show characteristics that enables it to be a highly suitable optoelectronic material. However, there is a pressing problem faced by the perovskite quantum dots involving the instability caused by the high delocalization of surface ions. To improve the stability of the perovskite quantum dots, a series of experiment is carried out.
The microwave irradiation and hot injection methods were used in the synthesis of the perovskite quantum dots. The photoluminescence and photoluminescence quantum yield of the purified quantum dots were obtained. The results show that all inorganic perovskite quantum dots are indeed highly suitable materials for optoelectronic purposes.
The type of ligand used in the synthesis of the perovskite nanocrystals is significant as it affects its stability. To improve stability, (3-aminopropyl)triethoxysilane (APTES) replaced Oleylamine (OM) in the synthesis procedure. By performing a temperature test, it was concluded that APTES significantly improved the stability of the perovskite quantum dots. |
| first_indexed | 2024-10-01T03:30:42Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/78795 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:30:42Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/787952023-07-07T16:33:22Z Development of perovskite-based light emitting diodes with improved stability Lee, Jack Min Chong Yong Ken Tye School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering All-inorganic CsPbX3 (X = I, Br, Cl) perovskite quantum dots have recently been proven to show characteristics that enables it to be a highly suitable optoelectronic material. However, there is a pressing problem faced by the perovskite quantum dots involving the instability caused by the high delocalization of surface ions. To improve the stability of the perovskite quantum dots, a series of experiment is carried out. The microwave irradiation and hot injection methods were used in the synthesis of the perovskite quantum dots. The photoluminescence and photoluminescence quantum yield of the purified quantum dots were obtained. The results show that all inorganic perovskite quantum dots are indeed highly suitable materials for optoelectronic purposes. The type of ligand used in the synthesis of the perovskite nanocrystals is significant as it affects its stability. To improve stability, (3-aminopropyl)triethoxysilane (APTES) replaced Oleylamine (OM) in the synthesis procedure. By performing a temperature test, it was concluded that APTES significantly improved the stability of the perovskite quantum dots. Bachelor of Engineering (Electrical and Electronic Engineering) 2019-06-28T01:49:48Z 2019-06-28T01:49:48Z 2019 Final Year Project (FYP) http://hdl.handle.net/10356/78795 en Nanyang Technological University 51 p. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Lee, Jack Min Chong Development of perovskite-based light emitting diodes with improved stability |
| title | Development of perovskite-based light emitting diodes with improved stability |
| title_full | Development of perovskite-based light emitting diodes with improved stability |
| title_fullStr | Development of perovskite-based light emitting diodes with improved stability |
| title_full_unstemmed | Development of perovskite-based light emitting diodes with improved stability |
| title_short | Development of perovskite-based light emitting diodes with improved stability |
| title_sort | development of perovskite based light emitting diodes with improved stability |
| topic | Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/78795 |
| work_keys_str_mv | AT leejackminchong developmentofperovskitebasedlightemittingdiodeswithimprovedstability |