Basic principles of postgrowth annealing of CdTe:Cl ingot to obtain semi-insulating crystals
生长后退火法获得Cd Te:CL钢锭的基本原理 半绝缘晶体
							
						    来自arXiv
                            2023-04-12 13:02:27
                        
The process of annealing of a CdTe:Cl ingot during its cooling after growth was studied. The annealing was performed in two stages: a high-temperature stage, with an approximate equality of chlorine and cadmium vacancy concentrations established at the thermodynamic equilibrium between the crystal and vapors of volatile components, and a low-temperature stage, with charged defects interacting to form neutral associations. The chlorine concentrations necessary to obtain semi-insulating crystals were determined for various ingot cooling rates in the high temperature stage. The dependence of the chlorine concentration [Cl+Te] in the ingot on the temperature of annealing in the high-temperature stage was found. The carrier lifetimes and drift mobilities were obtained in relation to the temperature and cadmium vapor pressure in the postgrowth annealing of the ingot.
Cd Te:CL钢锭生长后冷却过程中的退火过程 对其进行了研究。退火分两个阶段进行:高温 阶段,氯和镉的空位大致相等 在晶体之间的热力学平衡点建立的浓度 和挥发性成分的蒸气,以及带电的低温阶段 缺陷相互作用,形成中性联想。氯气浓度 确定了获得半绝缘晶体所需的各种钢锭 高温阶段的冷却速度。对氯的依赖 钢锭中[Cl+Te]浓度对退火温度的影响 发现了高温阶段。载流子寿命和漂移迁移率 得到了与温度和镉蒸汽压有关的 钢锭生长后的退火热处理。
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