Patent ID: 8735830

Claim:
A method of making a scintillator comprising zinc telluride and a dopant, the method comprising: providing an evaporation apparatus comprising an evaporation chamber having a first end portion with a substrate positioned in a holder, and a second end portion with a first source boat separate from a second source boat, and one or more chamber walls at least partially disposed between the first and second end portions; positioning a dopant salt in the first source boat and a zinc telluride (ZnTe) salt in the second source boat; and vaporizing the dopant salt and the ZnTe within the evaporation chamber to deposit a scintillator film comprising zinc telluride and a dopant on a surface of the positioned substrate, wherein the film is deposited by a process comprising applying heat to the evaporation chamber so as to vaporize the dopant salt and the zinc telluride salt for film deposition while maintaining a temperature relationship of T wall >T source >T substrate for at least a portion of the deposition process.