Abstract
A pin photo-diode was fabricated from the Si0.2Ge0.8/Si strained multiple quantum-well (MQW) structure grown by using ultra high vacuum chemical vapor deposition (UHV-CVD). The structural properties of the Si0.2Ge0.8/Si strained MQW were investigated using high-resolution X-ray diffraction (HRXRD). Specifically, the recent advances in the dry etching of Si0.2Ge0.8Si strained MQW have been used to define pin photo-diode active layer mesas. The current-voltage (I-V) characteristic of pin photodiodes fabricated from these MQWs was measured. Also, the spectral response spectrum of pin photodiodes was measured at room temperature.
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