Design, simulation and fabrication of ambient light detector
碩士 === 國立臺灣大學 === 光電工程學研究所 === 93 === In this thesis, we firstly investigate the feasibility of designing ambient light detectors based on Si and AlGaAs semiconductor through a self-developed device simulator. It is found that the difference between the cutoff wavelength of silicon and the peak wave...
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| Format: | Others |
| Language: | zh-TW |
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2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/55057464582046652716 |
| Summary: | 碩士 === 國立臺灣大學 === 光電工程學研究所 === 93 === In this thesis, we firstly investigate the feasibility of designing ambient light detectors based on Si and AlGaAs semiconductor through a self-developed device simulator. It is found that the difference between the cutoff wavelength of silicon and the peak wavelength of human eye’s response is too large to eliminate the infrared light detection in Si-based devices, which needs extra detectors and/or signal processing for correction otherwise may result in error response. On the other hand, the cutoff wavelength of AlGaAs can be tailored to fit the response edge of human eye’s response. Besides the design and simulation works on AlGaAs detectors, we also grew device structures with different AlGaAs by molecular beam epitaxy and fabricated the detectors successfully. The best response is very close to the CIE standard photopic luminous function.
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