Influence of doping and non-stoichiometry on the quality of lead iodide for use in X-ray detection

Matuchová, M.; Žďánský, K.; Zavadil, J.; Tonn, J.; Jafar, Mousa M. Abdul-Gader; Danilewsky, A.N.; Cröll, A.; Maixner, J.

doi:10.1016/j.jcrysgro.2009.12.034

Cited by 17 publications

(19 citation statements)

References 13 publications

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“…A very high resistivity of$ 10 12 O cm [2] has been reported for PbI 2 crystals grown by the Bridgman-Stockbarger technique using zone refined source material. In contrast to HgI 2 , lead iodide has a higher chemical stability and does not undergo phase transformation up to its melting point of $ 405 1C.…”

Section: Introductionmentioning

confidence: 97%

Czochralski growth of lead iodide single crystals: Investigations and comparison with the Bridgman method

Tonn

Danilewsky

Cröll

et al. 2011

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 97%

Czochralski growth of lead iodide single crystals: Investigations and comparison with the Bridgman method

Tonn

Danilewsky

Cröll

et al. 2011

Journal of Crystal Growth

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“…Crystalline thin films are even more challenging to fabricate compared to the amorphous films, because the complex spatial geometry of the crystallites in such films may affect the film integrity and roughness. Most of the relevant studies have considered thermal annealing, chemical treatments, and solution engineering for controlling the crystal growth during the deposition, e.g., [17][18][19], with varying degrees of success, and at the expense of incurring additional costs and environmental footprint. In this context, Habibi et al [19] examined solution deposition of PbI2 thin films and tuned the process parameters to suppress the phenomenon of dewetting caused by crystallization (crystallization dewetting).…”

Section: Introductionmentioning

confidence: 99%

Effect of the Ultrasonic Substrate Vibration on Nucleation and Crystallization of PbI2 Crystals and Thin Films

Zabihi

Eslamian

2018

Crystals

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Preparation of defect-free and well-controlled solution-processed crystalline thin films is highly desirable for emerging technologies, such as perovskite solar cells. In this work, using PbI 2 as a model solution with a vast variety of applications, we demonstrate that the excitation of a liquid thin film by imposed ultrasonic vibration on the film substrate significantly affects the nucleation and crystallization kinetics of PbI 2 and the morphology of the resulting solid thin film. It is found that by applying ultrasonic vibration to PbI 2 solution spun onto an ITO substrate with a moderate power and excitation duration (5 W and 1 min for the 40 kHz transducer used in this study), the nucleation rate increases and the crystals transform from 2D or planar to epitaxial 3D columnar structures, resulting in the suppression of crystallization dewetting. The effects of various induced physical phenomena as a result of the excitation by ultrasonic vibration are discussed, including microstreaming and micromixing, increased heat transfer and local temperature, a change in the thermodynamic state of the solution, and a decrease in the supersaturation point. It is shown that the ultrasonic-assisted solution deposition of the PbI 2 thin films is controllable and reproducible, a process which is low-cost and in line with the large-scale fabrication of such solution-processed thin films.

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“…This material is an excellent and interesting candidate for high efficiency room temperature radiation detectors operating in the medium energy range. They can be widely applied in medicine, monitoring ecology, nondestructive defectoscopy and X-ray and gamma spectroscopy [3][4][5][6]. As a high-anisotropic semiconductor, PbI 2 has a type of layered structure, with a repeating unit of hexagonal close packed layer of Pb 2+ sandwiched between two layers of I − in the crystal.…”

Section: Introductionmentioning

confidence: 99%

Comparative studies of optical absorption, photoluminescence and EPR spectra of PbMnI2 bulk layers and nanocrystals

Савчук¹,

Savchuk²,

Stefaniuk³

et al. 2014

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. We report a study of the layered diluted magnetic semiconductor (DMS) were prepared by cooling the boiling saturated aqueous solution to room temperature. The exciton structure of the absorption spectra of nanoparticles exhibits blue shift due to the quantum confinement effect. In photoluminescence spectra of nanocrystals, two main peaks were revealed, which are attributed to the band-edge transitions and defect states. The EPR spectra for bulk layers and nanocrystals consist of an intense broad line and several weak narrow lines that correspond to hyperfine spectra of Mn 2+ ions.

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Influence of doping and non-stoichiometry on the quality of lead iodide for use in X-ray detection

Cited by 17 publications

References 13 publications

Czochralski growth of lead iodide single crystals: Investigations and comparison with the Bridgman method

Czochralski growth of lead iodide single crystals: Investigations and comparison with the Bridgman method

Effect of the Ultrasonic Substrate Vibration on Nucleation and Crystallization of PbI2 Crystals and Thin Films

Comparative studies of optical absorption, photoluminescence and EPR spectra of PbMnI2 bulk layers and nanocrystals

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