MONITORING METHOD AND APPARATUS FOR EXCIMER LASER ANNEALING PROCESS
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May 31, 2013
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Jun 22, 2012
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Abstract
A method is disclosed evaluating a silicon layer crystallized by irradiation with pulses form an excimer-laser. The crystallization produces periodic features on the crystalized layer dependent on the number of and energy density in the pulses to which the layer has been exposed. An area of the layer is illuminated with light. A detector is arranged to detect light diffracted from the illuminated area and to determine from the detected diffracted light the energy density in the pulses to which the layer has been exposed.
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