PDIC用光偵測器之量測與模擬
Characterization and simulation of photosensor applied in PDIC
Date Issued
2004
Date
2004
Author(s)
Ma, Da-Jung
DOI
zh-TW
Abstract
In this thesis, the characterization and simulation for Si photodetectors in PDIC (photodetector integrated circuit) designed for DVD pick-up heads have been studied. A measurement system was set up to characterize the responsivity spectrum of commercial PDIC photodetectors. Simulation programs based on transmission matrix method and continuity equation were also developed to calculate the light reflection and absorption in the dielectrics and semiconductor, the photo-generated carrier distributions and the collection currents. The simulation programs were successfully used to fit the experimental responsivity spectrum so as to extract device parameters including the dielectric thickness, minority carrier diffusion length, surface recombination velocity and so on. The parameters were presented and can be utilized to optimize the structure of the PDIC photodetectors.
Subjects
光偵測器
光電轉換晶片
光學讀取頭
optical pick-up head
PDIC
photodetector
Type
thesis
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