Engineering electronic and optical properties of perovskites for light emission and solar cell applications
2D Hybrid Organic Inorganic Perovskites (HOIPs) have gained popularity in the scientific community for their optoelectronic properties, stability and performance. 2D perovskites also possess novel qualities that may be exploited due to the removal of the constraints on the dimensions of the A-site s...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/178801 |
| _version_ | 1811691198416420864 |
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| author | Gayathri, Girish |
| author2 | Shen Zexiang |
| author_facet | Shen Zexiang Gayathri, Girish |
| author_sort | Gayathri, Girish |
| collection | NTU |
| description | 2D Hybrid Organic Inorganic Perovskites (HOIPs) have gained popularity in the scientific community for their optoelectronic properties, stability and performance. 2D perovskites also possess novel qualities that may be exploited due to the removal of the constraints on the dimensions of the A-site spacer cation. Organic ligands with long carbon chains, diene groups and carboxylic acids may be used to amplify optoelectronic properties by means of topochemical polymerization via pressure [1]. Crosslinking between organic layers of perovskite have been associated with increased stability, lattice rigidity and enhanced carrier mobility.
We investigate the properties of a novel compound (EtODA)2 PbBr4 under pressure with the objective of introducing cross-linking through topochemical polymerisation. (EtODA)2 PbBr4 is compared with poly-(EtODA)2 PbBr4 and characterised through Raman spectroscopy and photoluminescence spectroscopy. The organic moiety of (EtODA)2 PbBr4 has undergone irreversible phase transitioning with application of pressure, as made evident by the 785 nm Raman spectra. Additionally, multiple phase transitions at ~4 GPa and ~10GPa are observed in the inorganic lattice as characterised by the observations from Raman spectroscopy (532 nm and 633 nm) and photoluminescence spectroscopy. Polymerised (EtODA)2 PbBr4 is more resilient under pressure and does not undergo any phase changes with application of moderate pressure. |
| first_indexed | 2024-10-01T06:16:05Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/178801 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:16:05Z |
| publishDate | 2024 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1788012024-07-08T15:36:09Z Engineering electronic and optical properties of perovskites for light emission and solar cell applications Gayathri, Girish Shen Zexiang School of Physical and Mathematical Sciences zexiang@ntu.edu.sg Physics 2-dimensional hybrid organic-inorganic metal halide perovskites Raman Spectroscopy Photoluminescence spectroscopy Phase transitions Cross-linking 2D Hybrid Organic Inorganic Perovskites (HOIPs) have gained popularity in the scientific community for their optoelectronic properties, stability and performance. 2D perovskites also possess novel qualities that may be exploited due to the removal of the constraints on the dimensions of the A-site spacer cation. Organic ligands with long carbon chains, diene groups and carboxylic acids may be used to amplify optoelectronic properties by means of topochemical polymerization via pressure [1]. Crosslinking between organic layers of perovskite have been associated with increased stability, lattice rigidity and enhanced carrier mobility. We investigate the properties of a novel compound (EtODA)2 PbBr4 under pressure with the objective of introducing cross-linking through topochemical polymerisation. (EtODA)2 PbBr4 is compared with poly-(EtODA)2 PbBr4 and characterised through Raman spectroscopy and photoluminescence spectroscopy. The organic moiety of (EtODA)2 PbBr4 has undergone irreversible phase transitioning with application of pressure, as made evident by the 785 nm Raman spectra. Additionally, multiple phase transitions at ~4 GPa and ~10GPa are observed in the inorganic lattice as characterised by the observations from Raman spectroscopy (532 nm and 633 nm) and photoluminescence spectroscopy. Polymerised (EtODA)2 PbBr4 is more resilient under pressure and does not undergo any phase changes with application of moderate pressure. Bachelor's degree 2024-07-08T01:15:53Z 2024-07-08T01:15:53Z 2024 Final Year Project (FYP) Gayathri, G. (2024). Engineering electronic and optical properties of perovskites for light emission and solar cell applications. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/178801 https://hdl.handle.net/10356/178801 en application/pdf Nanyang Technological University |
| spellingShingle | Physics 2-dimensional hybrid organic-inorganic metal halide perovskites Raman Spectroscopy Photoluminescence spectroscopy Phase transitions Cross-linking Gayathri, Girish Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title | Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title_full | Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title_fullStr | Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title_full_unstemmed | Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title_short | Engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| title_sort | engineering electronic and optical properties of perovskites for light emission and solar cell applications |
| topic | Physics 2-dimensional hybrid organic-inorganic metal halide perovskites Raman Spectroscopy Photoluminescence spectroscopy Phase transitions Cross-linking |
| url | https://hdl.handle.net/10356/178801 |
| work_keys_str_mv | AT gayathrigirish engineeringelectronicandopticalpropertiesofperovskitesforlightemissionandsolarcellapplications |