Preliminary characterization of PbI2 polycrystalline layers deposited from solution for nuclear detector applications

Ponpon, J.P.

doi:10.1016/s0040-6090(01)01151-8

Cited by 45 publications

(26 citation statements)

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“…Sample SS6000 showed a higher conductivity than that of sample DT35, which may be due to the larger crystalline size. These values of the conductivities are higher than those reported for lead iodide thin films deposited by solution methods [3].…”

Section: Electrical Propertiescontrasting

confidence: 63%

“…Lead iodide (PbI 2 ) belongs to the layered semiconductor family, and is a widely studied semiconductor for various applications such as X-ray detectors [1], medical imaging [2], nuclear detection [3] and photosensitivity semiconductormetal applications [4]. It has also been used as a precursor for obtaining the methylammonium lead iodide perovskite-based solar cell [5], one of the highest solution-processed solar cells reported so far.…”

Section: Introductionmentioning

confidence: 99%

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Growth and properties of lead iodide thin films by spin coating

et al. 2016

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Abstract. In this study, lead iodide (PbI 2 ) thin films were deposited on glass substrates by spin coating a solution of 0.2 M PbI 2 dissolved in dimethylformamide, varying the deposition time and the spin speed. The thickness of the thin films decreased with increase in spin speed and deposition time, as examined by profilometry measurements. The structure, morphology, optical and electrical properties of the thin films were analysed using various techniques. X-ray diffraction patterns revealed that the thin films possessed hexagonal structures. The thin films were grown highly oriented to [001] direction of the hexagonal lattice. Raman peaks detected at 96 and 136 cm −1 were corresponding to the characteristic vibration modes of PbI 2 . The X-ray photoelectron spectroscopy detected the presence of Pb and I with core level binding energies corresponding to that in PbI 2 . Atomic force microcopy showed smooth and compact morphology of the thin films. From UV-Vis transmittance and reflectance spectral analysis, the bandgap of the thin films ∼2.3 eV was evaluated. The dark conductivity of the thin films was computed and the value decreased as the deposition time and spin speed increased.

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Section: Electrical Propertiescontrasting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Growth and properties of lead iodide thin films by spin coating

et al. 2016

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“…It is difficult to grow large crystals of PbI 2 with good uniformity; as a result, they are not well suited for applications such as imaging devices which require large surfaces [5][6][7][8]. Using thin polycrystalline layer instead of single crystal wafer is an alternative approach to overcome this difficulty which takes advantage of intrinsic properties of lead iodide [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Deposition Conditions on Structural Properties of PbI2

Mousa

Al-rubaie²

2009

Texture, Stress, and Microstructure

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The effect of deposition environment conditions on the electrical and structural properties of deposited PbI 2 layers were studied. The layers were deposited from solution under dark and room light illumination with and without applying magnetic field. XRD, electrical, and photo-electrical properties were measured at room temperature. An increase in the grain size versus the platelet area was noticed.The electrical properties revealed a dependence on deposition conditions. Dark conductivity increases from 1.7×10 −10 to 5 × 10 −9 (Ωcm) −1 when deposition was carried out in darkness. A gain factor (the ratio between photoconductivity and dark conductivity) of (23) was obtained. The results indicate that the increase in electrical conductivity is mainly due to the plane 001, where the average number of grain boundaries in this plane sharply decreases when deposition takes place in darkness. On the other hand, the increase in photoconductivity could be due to the decrease in the recombination of free carriers along the grain boundaries.

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“…This simple method allows one to obtain thin films (10-100 µm thick) made of a stack of parallel, hexagonal crystalline platelets (typically 10 µm thick and a few micro-metres to a few tens of micro-metres wide) all oriented along the c-axis [7]. The resistivity of such films is about a few 10…”

Section: Introductionmentioning

confidence: 99%

Properties of solution grown PbI₂ layers embedded in PVA

Ponpon¹,

Amann

2007

Cryst. Res. Technol.

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Polycrystalline lead iodide layers with crystallites in the micrometer range have been prepared using a solution growth method from water and polyvinyl alcohol. Structural, electrical and optical measurements have been performed to characterize these layers and compare their properties to those of polycrystalline films prepared by solution growth in pure water. Most of these properties are very similar. The main difference comes from the photoresponse: that of films prepared with PVA remains high but presents an unusual behaviour with temperature. This has been related to the presence of a trapping/recombination energy level in the band gap.

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Preliminary characterization of PbI2 polycrystalline layers deposited from solution for nuclear detector applications

Cited by 45 publications

References 3 publications

Growth and properties of lead iodide thin films by spin coating

Growth and properties of lead iodide thin films by spin coating

The Influence of Deposition Conditions on Structural Properties of PbI2

Properties of solution grown PbI₂ layers embedded in PVA

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Preliminary characterization of PbI2 polycrystalline layers deposited from solution for nuclear detector applications

Cited by 45 publications

References 3 publications

Growth and properties of lead iodide thin films by spin coating

Growth and properties of lead iodide thin films by spin coating

The Influence of Deposition Conditions on Structural Properties of PbI2

Properties of solution grown PbI2 layers embedded in PVA

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Properties of solution grown PbI₂ layers embedded in PVA