Fabrication of the Anodes of Tube-type Field Emission Lights and Improvement of Their Luminous Efficiency
碩士 === 國防大學理工學院 === 材料科學與工程碩士班 === 103 === Optimization of anode for field emission tube (FET) was studied in this thesis. The study of this thesis contains three sections. The first section mainly focuses on development of the fabrication process for FET anode. Different types of conductive layers...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2015
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| Online Access: | http://ndltd.ncl.edu.tw/handle/89783413038943618463 |
| Summary: | 碩士 === 國防大學理工學院 === 材料科學與工程碩士班 === 103 === Optimization of anode for field emission tube (FET) was studied in this thesis. The study of this thesis contains three sections. The first section mainly focuses on development of the fabrication process for FET anode. Different types of conductive layers were prepared for the transmissive and reflective FET respectively. The results indicate that the annealing atmosphere and temperature would affect the quality of the conductive layers. Also, the ratio of phosphor slurry was improved to enhance the uniformity of the phosphor layer.
The second section investigated the influence of different modification on the light-emitting efficiency of ZnS phosphor. The ZnS phosphor powders were modified with ultrasonic vibration or ball milling and then thermally annealed to reduce defects from the modification process. The third section of this thesis combined the anode conductive layer prepared from the optimal parameters with the modified ZnS phosphor to prepare field emission anode. The results of field emission test, the spectrum and lighting efficiency were compared with those of anode prepared from unmodified ZnS phosphor. The results show that the illumination performance of FETs with modified ZnS phosphor was 38% higher than those from unmodified phosphor.
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