Fabrication of 1.55μm Si-Based Resonant Cavity Enhanced Photodetectors

A novel bonding method using silicate gel as bonding medium is developed.High reflective SiO 2/Si mirrors deposited on silicon substrates by e-beam deposition are bonded to the active layers at a low temperature of 350℃ without any special treatment on bonding surfaces.The reflectivities of the mirrors can be as high as 99 9%.A Si-based narrow band response InGaAs photodetector is successfully fabricated,with a quantum efficiency of 22 6% at the peak wavelength of 1 54μm,and a full width at half maximum of about 27nm.This method has a great potential for industry processes.

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乡村初中体育课中学生学习兴趣的培养

目前,在实施素质教育的教学过程中,兴趣的培养占有重要位置。兴趣是一个人对客观事物的一种积极,自觉,充满热情的认识倾向,是学习中最活跃的一种因素。