Processing and characterization of multi-filter-region ambient light detector
Date Issued
2007
Date
2007
Author(s)
Huang, Cheng-hong
DOI
zh-TW
Abstract
The work of this study is using multi-filter regions on the surface of a PIN photodiode to implement an ambient light detector. We choose three AlxGa1-xAs layers with different Al compositions to compose the absorption structure of the PIN photodiode. The multi-filter region structure is composed of four different combinations of GaAs and color resist layers. By adjusting the area ratio of these combinations, we can synthesize the luminosity function V(λ) which is proposed by Commission Internationale de l’Eclairage (CIE) in 1924. Through the implementation of the multi-filter regions on the PIN photodiode, we move response close to V(λ) and improve the f’1 error function from 63 .7% to 11.4%.
Subjects
環境光偵測器
照度計
可見光偵測器
照度
ambient light detector
ambient light sensor
illuminance meter
visible light detector
Type
thesis