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从理论和实验上对AgGaS2晶体生长中易产生裂纹甚至开裂的现象与其热应力、晶体尺寸以及温度梯度、生长速率等生长参数之间的关系进行了研究.结果表明:晶体产生裂纹甚至开裂与生长速率、坩埚旋转速率、冷却速率所造成的热应力和热应变有关.采用改进的Bridgman法成功地生长出尺寸为φ12mm×30mm无裂纹的AgGaS2单晶体,给出了制备无裂纹、大尺寸AgGaS2晶体的较佳生长工艺参数.

参考文献

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