Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications
Colloidal two-dimensional (2-D) nanoplatelets (NPLs), namely colloidal quantum wells, have received tremendous attention as promising gain media in the last few years owing to their excellent solution processability, broad wavelength tunability, huge absorption cross-sections, ultra-narrow linewidth...
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| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/162839 |
| _version_ | 1811689840503160832 |
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| author | Zhang, Zitong |
| author2 | Sun Handong |
| author_facet | Sun Handong Zhang, Zitong |
| author_sort | Zhang, Zitong |
| collection | NTU |
| description | Colloidal two-dimensional (2-D) nanoplatelets (NPLs), namely colloidal quantum wells, have received tremendous attention as promising gain media in the last few years owing to their excellent solution processability, broad wavelength tunability, huge absorption cross-sections, ultra-narrow linewidths, and strongly inhibited Auger effect. Despite the considerable progress achieved in NPLs-based microlasers, the realization of facile lasers with high-quality and low-threshold remains a grand challenge. Most importantly, the crucial optoelectrical properties of NPLs have not been explored to the same extent as the synthesis of novel 2-D nanostructures or the fabrication of corresponding prototype devices, which impedes a deep understanding of the physical insights into NPLs systems and, in turn, hampers the accurate prediction and rational design of NPLs-based optoelectronics. Thus, it is necessary to investigate the underlying rich photophysics in the NPLs family and to explore versatile approaches to construct functionalized NPLs-microlasers. To this end, this dissertation will cover the optimized synthesis of CdSe-based NPLs with broad spectral coverage, the investigation of the underlying mechanisms of light-matter interactions in quantum-well structures through various spectroscopy techniques, and the fabrication of miniaturized laser sources containing NPLs with the robust and high-quality operation. |
| first_indexed | 2024-10-01T05:54:30Z |
| format | Thesis-Doctor of Philosophy |
| id | ntu-10356/162839 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:54:30Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1628392023-02-28T23:47:32Z Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications Zhang, Zitong Sun Handong School of Physical and Mathematical Sciences HDSun@ntu.edu.sg Science::Physics::Optics and light Engineering::Materials::Photonics and optoelectronics materials Colloidal two-dimensional (2-D) nanoplatelets (NPLs), namely colloidal quantum wells, have received tremendous attention as promising gain media in the last few years owing to their excellent solution processability, broad wavelength tunability, huge absorption cross-sections, ultra-narrow linewidths, and strongly inhibited Auger effect. Despite the considerable progress achieved in NPLs-based microlasers, the realization of facile lasers with high-quality and low-threshold remains a grand challenge. Most importantly, the crucial optoelectrical properties of NPLs have not been explored to the same extent as the synthesis of novel 2-D nanostructures or the fabrication of corresponding prototype devices, which impedes a deep understanding of the physical insights into NPLs systems and, in turn, hampers the accurate prediction and rational design of NPLs-based optoelectronics. Thus, it is necessary to investigate the underlying rich photophysics in the NPLs family and to explore versatile approaches to construct functionalized NPLs-microlasers. To this end, this dissertation will cover the optimized synthesis of CdSe-based NPLs with broad spectral coverage, the investigation of the underlying mechanisms of light-matter interactions in quantum-well structures through various spectroscopy techniques, and the fabrication of miniaturized laser sources containing NPLs with the robust and high-quality operation. Doctor of Philosophy 2022-11-11T00:36:40Z 2022-11-11T00:36:40Z 2022 Thesis-Doctor of Philosophy Zhang, Z. (2022). Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/162839 https://hdl.handle.net/10356/162839 10.32657/10356/162839 en 10.1002/adma.202108884 10.1021/acs.jpclett.1c02623 This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
| spellingShingle | Science::Physics::Optics and light Engineering::Materials::Photonics and optoelectronics materials Zhang, Zitong Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title | Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title_full | Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title_fullStr | Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title_full_unstemmed | Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title_short | Manipulation of the optical properties in colloidal quantum wells: towards efficient laser applications |
| title_sort | manipulation of the optical properties in colloidal quantum wells towards efficient laser applications |
| topic | Science::Physics::Optics and light Engineering::Materials::Photonics and optoelectronics materials |
| url | https://hdl.handle.net/10356/162839 |
| work_keys_str_mv | AT zhangzitong manipulationoftheopticalpropertiesincolloidalquantumwellstowardsefficientlaserapplications |