TY - JOUR
T1 - Pt coldfinger improves quality of Bridgman-grown Cd 0.9Zn 0.1Te:Bi crystals
AU - Carcelén, V.
AU - Kim, K. H.
AU - Camarda, G. S.
AU - Bolotnikov, A. E.
AU - Hossain, A.
AU - Yang, G.
AU - Crocco, J.
AU - Bensalah, H.
AU - Dierre, F.
AU - Diéguez, E.
AU - James, R. B.
N1 - Funding Information:
This work was supported by the following Projects: Spanish “Ministerio de Educación y Ciencia” , ESP2006-09935 ; Spanish “Comunidad de Madrid” , S-0505/MAT-0279 ; European Commission , FP7-SEC-2007-01 ; and Contract number 14240/00/NL/SH , European Space Agency . One of the authors, VC, is grateful to the Ministry of Education and Science, Spain for financial support. Portions of this work were performed at Beamline X27A, National Synchrotron Light Source (NSLS), Brookhaven National Laboratory. X27A is supported in part by the U.S. Department of Energy—Geosciences ( DE-FG02-92ER14244 to The University of Chicago—CARS) and Brookhaven National Laboratory—Department of Environmental Sciences. Use of the NSLS was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract no. DE-AC02-98CH10886. This work also was partially supported by the U.S. Department of Energy, Office of Nonproliferation Research and Development, NA-22.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Cadmium zinc telluride (Cd 1-xZn xTe) crystals have many applications in optoelectronics and as room-temperature detectors. We grew bismuth-doped CZT crystals by the standard Bridgman Oscillation Method, and compared them with such crystals grown in the thermal environment of a furnace modified with a Pt coldfinger (metal rod). The coldfinger serves as a tool for stabilizing the solidliquid interface by extracting heat from the as-grown crystal, and thereby improving the ingots crystalline quality. We detailed the crystals quality via high-resolution X-ray diffraction (HRXRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Synchrotron-based X-ray microfluorescence (μSXRF) images, as well as by etch-pit density (EPD) measurements. Our results demonstrated that the Pt coldfinger is an effective tool for improving the quality of CZT bulk material.
AB - Cadmium zinc telluride (Cd 1-xZn xTe) crystals have many applications in optoelectronics and as room-temperature detectors. We grew bismuth-doped CZT crystals by the standard Bridgman Oscillation Method, and compared them with such crystals grown in the thermal environment of a furnace modified with a Pt coldfinger (metal rod). The coldfinger serves as a tool for stabilizing the solidliquid interface by extracting heat from the as-grown crystal, and thereby improving the ingots crystalline quality. We detailed the crystals quality via high-resolution X-ray diffraction (HRXRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Synchrotron-based X-ray microfluorescence (μSXRF) images, as well as by etch-pit density (EPD) measurements. Our results demonstrated that the Pt coldfinger is an effective tool for improving the quality of CZT bulk material.
KW - A1. Crystal structure
KW - A2. Bridgman technique
KW - B1. Cadmium compounds
KW - B2. Semiconducting IIVI materials
UR - http://www.scopus.com/inward/record.url?scp=84655161308&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2011.09.031
DO - 10.1016/j.jcrysgro.2011.09.031
M3 - Article
AN - SCOPUS:84655161308
SN - 0022-0248
VL - 338
SP - 1
EP - 5
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1
ER -