In the meanwhile, with using more accurate expression of the avalanche excess noise factor, we give a relation schema between sensitivity and darkcurrent.
同时，采用了较为精确的过剩噪声系数表达式，给出了灵敏度与暗电流的关系曲线。
2
The darkcurrent that affects CCD detection sensitivity is described. The generating mechanism of darkcurrentnoise and its influence on CCD performance are analyzed.
阐述了影响CCD探测灵敏度的暗电流及暗电流噪声的产生机理，分析了其对CCD性能的影响。
3
The device can effectively improve photoelectric conversion gain of devices, limit the darkcurrent of devices, and reduce the noise of devices, so as to obtain higher signal-to-noise.