Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications
This thesis focused on the synthesis of Ge-based one-dimensional (1D) nanostructures for photodetector applications. We presented the comprehensive studies of controllable syntheses of Ge-based nanostructures, including Ge nanowires (NWs), zinc germanate (Zn2Ge2O4, ZGO) NWs and indium germanate (In2...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2011
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/47555 |
| _version_ | 1826118393874350080 |
|---|---|
| author | Yan, Chaoyi |
| author2 | Lee Pooi See |
| author_facet | Lee Pooi See Yan, Chaoyi |
| author_sort | Yan, Chaoyi |
| collection | NTU |
| description | This thesis focused on the synthesis of Ge-based one-dimensional (1D) nanostructures for photodetector applications. We presented the comprehensive studies of controllable syntheses of Ge-based nanostructures, including Ge nanowires (NWs), zinc germanate (Zn2Ge2O4, ZGO) NWs and indium germanate (In2Ge2O7, IGO) nanostructures. Photodetector using those novel nanostructures were fabricated and studied, aiming to achieve high wavelength selectivity, high photoresponse time and low fabrication cost. GeNWs were synthesized in a horizontal high temperature furnace using both conventional Au and novel Bi catalysts. The growth conditions were carefully optimized to achieve the best NW yield. Morphology, crystal structure and chemical compositions of the NWs were characterized using various instruments. Photodetectors based on single GeNW and NW networks were fabricated and studied. Network devices with facile fabrication processes exhibited greatly enhanced photoresponse time than single NW devices and are considered as alternative solutions for further large scale production. Ternary |
| first_indexed | 2024-10-01T04:42:59Z |
| format | Thesis |
| id | ntu-10356/47555 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:42:59Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/475552023-03-04T16:40:59Z Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications Yan, Chaoyi Lee Pooi See School of Materials Science & Engineering Advanced Materials Research Centre DRNTU::Engineering::Materials::Nanostructured materials This thesis focused on the synthesis of Ge-based one-dimensional (1D) nanostructures for photodetector applications. We presented the comprehensive studies of controllable syntheses of Ge-based nanostructures, including Ge nanowires (NWs), zinc germanate (Zn2Ge2O4, ZGO) NWs and indium germanate (In2Ge2O7, IGO) nanostructures. Photodetector using those novel nanostructures were fabricated and studied, aiming to achieve high wavelength selectivity, high photoresponse time and low fabrication cost. GeNWs were synthesized in a horizontal high temperature furnace using both conventional Au and novel Bi catalysts. The growth conditions were carefully optimized to achieve the best NW yield. Morphology, crystal structure and chemical compositions of the NWs were characterized using various instruments. Photodetectors based on single GeNW and NW networks were fabricated and studied. Network devices with facile fabrication processes exhibited greatly enhanced photoresponse time than single NW devices and are considered as alternative solutions for further large scale production. Ternary DOCTOR OF PHILOSOPHY (MSE) 2011-08-02T02:40:13Z 2012-01-03T08:26:44Z 2011-08-02T02:40:13Z 2012-01-03T08:26:44Z 2011 2011 Thesis Yan, C. (2011). Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/47555 10.32657/10356/47555 en 175 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Nanostructured materials Yan, Chaoyi Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title | Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title_full | Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title_fullStr | Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title_full_unstemmed | Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title_short | Synthesis of Ge-based one-dimensional nanomaterials for photodetector applications |
| title_sort | synthesis of ge based one dimensional nanomaterials for photodetector applications |
| topic | DRNTU::Engineering::Materials::Nanostructured materials |
| url | https://hdl.handle.net/10356/47555 |
| work_keys_str_mv | AT yanchaoyi synthesisofgebasedonedimensionalnanomaterialsforphotodetectorapplications |