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Title: Annual Report: Property Improvement in CZT via Modeling and Processing Innovations

Abstract

The objective of this project is to develop growth models of CZT crystals from the melt using vertical gradient freeze (VGF) or vertical Bridgman growth as a typical process. Further, the project will perform critical experiments including single crystal growth to validate the growth models and to provide detailed data for modeling and simulation. Ideally, the project will develop growth models that will provide, for the first time, choices for optimal CZT single crystal growth from the melt based on model input. The overarching goal that guides this research proposal is to produce large, single crystals of CZT with good yield and reproducible properties. In our view this depends on 1) understanding crystal growth processes, including annealing and cool-down processing, and 2) understanding the role of defects on detector response since it is not possible, yet, to produce defect-free materials. Models of defect structure and formation are addressed. Validated models and experiments on reducing defects in melt-grown crystals are used to guide our understanding of growth processes and in-furnace annealing plus cool-down.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
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  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1170117
Report Number(s):
PNNL-22869
NN2001000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; modeling and simulation; CZT; crystal growth; tellurium

Citation Formats

Henager, Charles H., Setyawan, Wahyu, Gao, Fei, Hu, Shenyang Y., Bliss, Mary, Riley, Brian J., Alvine, Kyle J., and Stave, Jean A.. Annual Report: Property Improvement in CZT via Modeling and Processing Innovations. United States: N. p., 2013. Web. doi:10.2172/1170117.
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Henager, Charles H., Setyawan, Wahyu, Gao, Fei, Hu, Shenyang Y., Bliss, Mary, Riley, Brian J., Alvine, Kyle J., & Stave, Jean A.. Annual Report: Property Improvement in CZT via Modeling and Processing Innovations. United States. doi:10.2172/1170117.
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Henager, Charles H., Setyawan, Wahyu, Gao, Fei, Hu, Shenyang Y., Bliss, Mary, Riley, Brian J., Alvine, Kyle J., and Stave, Jean A.. Sun . "Annual Report: Property Improvement in CZT via Modeling and Processing Innovations". United States. doi:10.2172/1170117. https://www.osti.gov/servlets/purl/1170117.
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@article{osti_1170117,
title = {Annual Report: Property Improvement in CZT via Modeling and Processing Innovations},
author = {Henager, Charles H. and Setyawan, Wahyu and Gao, Fei and Hu, Shenyang Y. and Bliss, Mary and Riley, Brian J. and Alvine, Kyle J. and Stave, Jean A.},
abstractNote = {The objective of this project is to develop growth models of CZT crystals from the melt using vertical gradient freeze (VGF) or vertical Bridgman growth as a typical process. Further, the project will perform critical experiments including single crystal growth to validate the growth models and to provide detailed data for modeling and simulation. Ideally, the project will develop growth models that will provide, for the first time, choices for optimal CZT single crystal growth from the melt based on model input. The overarching goal that guides this research proposal is to produce large, single crystals of CZT with good yield and reproducible properties. In our view this depends on 1) understanding crystal growth processes, including annealing and cool-down processing, and 2) understanding the role of defects on detector response since it is not possible, yet, to produce defect-free materials. Models of defect structure and formation are addressed. Validated models and experiments on reducing defects in melt-grown crystals are used to guide our understanding of growth processes and in-furnace annealing plus cool-down.},
doi = {10.2172/1170117},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Sep 01 00:00:00 EDT 2013},
month = {Sun Sep 01 00:00:00 EDT 2013}
}
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Technical Report:
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DOI:  10.2172/1170117
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