Calorimetric and spectroscopic characterization of zone refined and regrown lead iodide

K. T. Chen; A. Burger; H. Chen; Y. F. Chen; K. Hansen; L. Suber; S. Wilson; J. Henderson; G. W. Wright; M. L. Cole

Calorimetric and spectroscopic characterization of zone refined and regrown lead iodide

K. T. Chen, A. Burger, H. Chen, Y. F. Chen, K. Hansen, L. Suber, S. Wilson, J. Henderson, G. W. Wright, M. L. Cole

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

Abstract

Lead iodide starting materials have been purified by vertical zone refining process. The purest materials of the zone-refined ingot, middle zone, were used for single crystal growth by Bridgman method. Differential scanning calorimetry, current-voltage and low temperature photoluminescence measurements were employed to investigate the effectiveness of zone refining process and as-grown crystal. The results showed that the materials from the middle section of zone-refined ingot is the purest, followed by first-to-freeze and last-to-freeze materials. No second phase and deviation from stoichiometry have been observed after zone refining process and Bridgman crystal growth method. The resistivities increase as the purity and crystallinity of materials increases. Cleavage of as-grown crystal did damage the surface and caused additional emission at 2.0 eV. This emission band was not observed after a 10% NaI solution etching.

Original language	English
Pages (from-to)	369-372
Number of pages	4
Journal	Materials Research Society Symposium - Proceedings
Volume	487
State	Published - 1998
Externally published	Yes
Event	Proceedings of the 1998 MRS Fall Symposium - Boston, MA, USA Duration: Dec 1 1997 → Dec 5 1997

Cite this

@article{677bd87411ac4da4bcef63d5910348f3,

title = "Calorimetric and spectroscopic characterization of zone refined and regrown lead iodide",

abstract = "Lead iodide starting materials have been purified by vertical zone refining process. The purest materials of the zone-refined ingot, middle zone, were used for single crystal growth by Bridgman method. Differential scanning calorimetry, current-voltage and low temperature photoluminescence measurements were employed to investigate the effectiveness of zone refining process and as-grown crystal. The results showed that the materials from the middle section of zone-refined ingot is the purest, followed by first-to-freeze and last-to-freeze materials. No second phase and deviation from stoichiometry have been observed after zone refining process and Bridgman crystal growth method. The resistivities increase as the purity and crystallinity of materials increases. Cleavage of as-grown crystal did damage the surface and caused additional emission at 2.0 eV. This emission band was not observed after a 10% NaI solution etching.",

author = "Chen, {K. T.} and A. Burger and H. Chen and Chen, {Y. F.} and K. Hansen and L. Suber and S. Wilson and J. Henderson and Wright, {G. W.} and Cole, {M. L.}",

year = "1998",

language = "English",

volume = "487",

pages = "369--372",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

note = "Proceedings of the 1998 MRS Fall Symposium ; Conference date: 01-12-1997 Through 05-12-1997",

}

TY - JOUR

T1 - Calorimetric and spectroscopic characterization of zone refined and regrown lead iodide

AU - Chen, K. T.

AU - Burger, A.

AU - Chen, H.

AU - Chen, Y. F.

AU - Hansen, K.

AU - Suber, L.

AU - Wilson, S.

AU - Henderson, J.

AU - Wright, G. W.

AU - Cole, M. L.

PY - 1998

Y1 - 1998

N2 - Lead iodide starting materials have been purified by vertical zone refining process. The purest materials of the zone-refined ingot, middle zone, were used for single crystal growth by Bridgman method. Differential scanning calorimetry, current-voltage and low temperature photoluminescence measurements were employed to investigate the effectiveness of zone refining process and as-grown crystal. The results showed that the materials from the middle section of zone-refined ingot is the purest, followed by first-to-freeze and last-to-freeze materials. No second phase and deviation from stoichiometry have been observed after zone refining process and Bridgman crystal growth method. The resistivities increase as the purity and crystallinity of materials increases. Cleavage of as-grown crystal did damage the surface and caused additional emission at 2.0 eV. This emission band was not observed after a 10% NaI solution etching.

AB - Lead iodide starting materials have been purified by vertical zone refining process. The purest materials of the zone-refined ingot, middle zone, were used for single crystal growth by Bridgman method. Differential scanning calorimetry, current-voltage and low temperature photoluminescence measurements were employed to investigate the effectiveness of zone refining process and as-grown crystal. The results showed that the materials from the middle section of zone-refined ingot is the purest, followed by first-to-freeze and last-to-freeze materials. No second phase and deviation from stoichiometry have been observed after zone refining process and Bridgman crystal growth method. The resistivities increase as the purity and crystallinity of materials increases. Cleavage of as-grown crystal did damage the surface and caused additional emission at 2.0 eV. This emission band was not observed after a 10% NaI solution etching.

UR - http://www.scopus.com/inward/record.url?scp=0031622081&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0031622081

SN - 0272-9172

VL - 487

SP - 369

EP - 372

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1998 MRS Fall Symposium

Y2 - 1 December 1997 through 5 December 1997

ER -

Calorimetric and spectroscopic characterization of zone refined and regrown lead iodide

Abstract

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