Melt Grown ZnO Bulk Crystals

TL;DR

This paper presents a new melt growth method for zinc oxide bulk crystals using a Bridgman technique under pressure, achieving large, high-quality crystals with reduced impurities through crucible reuse.

Contribution

Introduction of a melt growth process for ZnO crystals using an iridium crucible and Bridgman technique, enabling large, high-quality crystals with impurity reduction.

Findings

Crystals up to 33 mm diameter and 50 mm length produced.

Impurity content significantly reduced with crucible reuse.

Potential for large-scale production of high-quality ZnO crystals.

Abstract

Bulk crystals of zinc oxide can be grown from the melt by a Bridgman technique under pressure. This new technology using an iridium crucible shows the potential to yield large single crystals of good crystalline perfection. Crystals with diameters up to 33 mm and a length of up to 50 mm have been demonstrated. The impurity content can be strongly reduced by using the crucibles repeatedly.