발간논문

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Vol.26, No.8, 763 ~ 770, 1988
Title
Effect of the Growth Rate on the Dislocation Density and Distribution of CdTe Single Crystals Grown by a Vertical Bridgman Method
송원준W . J . Song, 서상희S . H . Suh, 임성욱S . W . Lim, 최인훈I . H . Choi, 김재묵J . M . Kim
Abstract
CdTe single crystals were grown by a vertical Bridgman method. The growth rate was varied between 1.1 and 5.4 ㎜/hr with maintaining the temperature gradient of 16℃/㎝ at the solid-liquid interface. Etch-pit structures of CdTe single crystals were investigated. The dislocation density was larger and the subgrain size was smaller at the surface and bottom of the crystal. With the increasing growth rate, the dislocation density gets larger and the subgrain size becomes smaller The thermal stress, which is supposed to build up during the solidification process, can explain our results.
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