Unit for determining position of p-n junction
专利汇可以提供Unit for determining position of p-n junction专利检索，专利查询，专利分析的服务。并且PURPOSE:To accurately determine the position of a P-N junction even when it is located deep by a method wherein a light beam is projected upon the P-N junction element and the current excited by the projected beam is measured. CONSTITUTION:The output is caused to increase in an optical intensity modulator 4, which causes the intensity of the beam from a laser source 1 to linearly increase. The current excited in a P-N junction element 3 is measured, and then supplied to an arithmetic processing unit 8. The intensity of the laser beam is recognized by a monitor 7, and the data is supplied to the arithmetic processing unit 8. The arithmetic processing unit 8 plots the relations between the inputted optical intensity and excited current strength, and determines a position X that is the location of a P-N junction by calculating a point where the excited current reaches a point of saturation, and outputs the result. At a certain optical level, saturation is reached in the excited current because a change in the length of diffusion of carriers due to intensified optical energy causes the carriers to be saturated arriving at the position of the P-N junction. The optical intensity whereat saturation is effected is a function of the length of a P-N junction. Accordingly, the optical intensity responsible for saturation may be converted in the arithmetic processing unit 8 into a value indicating the depth of a P-N junction, for the determination of the position of the P-N junction 3a.，下面是Unit for determining position of p-n junction专利的具体信息内容。
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