Optical spectra of microcrystals of the layered semiconductor PbI2 grown in glass matrices

Ablitsova, A. S.; Agekyan, V. F.; Serov, A. Yu.

doi:10.1134/1.1187333

Cited by 3 publications

(13 citation statements)

References 5 publications

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“…Calculations performed using as an example the nanofilm 2H-PbI 2 embedded into glass or polymer E-MAA matrix have shown that essential temperature changes in the position and shape of the absorption band begin at T ≥ 75 K. Growth of the NF temperature causes a monotonic shift of the exciton peak to the long-wave spectral range, and this shift reaches 80 meV at 300 K. In this case, the width of the band is increased to some extent and becomes 4…10 meV. The results of these calculations are in good accordance with the data of experimental measurements [3][4][5].…”

Section: Discussionsupporting

confidence: 80%

“…1), which is in good accordance with the data of experimental measurements [4]. In this case, the band width grows insignificantly as a consequence of exciton scattering by LO-phonons (Fig.…”

Section: E E supporting

confidence: 81%

“…Intense development of technologies to obtain and study physical properties of low-dimensional heterostructures based on lead iodide is related with the possibility to use them for creation of X-ray and γ-radiation detectors as well as other optoelectronic devices [1][2][3][4][5][6][7][8][9]. Spatial confinement of quasi-particles in low-dimensional structures cause additional quantization of their motion characteristics, which is pronounced in experimentally observed changes in their optical properties, including those in the excitonic range of the spectrum [ 6 3  ].…”

Section: Introductionmentioning

confidence: 99%

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Temperature changes in the function of the shape inherent to the band of exciton absorption in nanofilm of layered semiconductor

Derevyanchuk¹

2014

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Represented in this paper is the method and results of theoretical investigations aimed at the influence of spatial confinement effects, self-polarization of heterojunction planes as well as exciton-phonon interaction on the position and shape of the band corresponding to exciton absorption in nanofilms of layered semiconductor in a dielectric matrix. The heterojunction is considered as unloaded, the nanosystem is modeled by an infinitely deep quantum well and characterized by an essential difference between dielectric permittivities on both sides of the heterojunction. Calculated in this work are the dependences for the form-function of the absorption band on the thickness of lead iodide nanofilm embedded into polymer E-MAA or glass, and on its temperature. The results of calculations are in good accordance with known data of experimental measurements.

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Section: Discussionsupporting

confidence: 80%

Section: E E supporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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Temperature changes in the function of the shape inherent to the band of exciton absorption in nanofilm of layered semiconductor

Derevyanchuk¹

2014

Semicond. Phys. Quantum Electron. Optoelectron.

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“…It explains hasty development of technologies for preparation and investigations of physical properties both of bulk lead di-iodide crystals [3,4] and low-dimensional [5], in particular, hybrid nonorganic -organic heterostructures based on it [6][7][8][9][10]. The latter are especially interesting due to combination of properties inherent to materials of both types as well as availability of spatial confinement (SC) effects.…”

Section: Introductionmentioning

confidence: 99%

“…Spatial confinement of quasi-particles in lowdimensional structures causes additional quantization of their motion characteristics, which can be observed in changes of their optical properties, including those in the exciton range of spectrum [5][6][7]11].…”

Section: Introductionmentioning

confidence: 99%

Temperature changes of the exciton transition energy in lead di-iodide nanofilms

Pugantseva¹

2013

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Adduced in this work are the results of theoretical investigations devoted to the influence of spatial confinement effects, self-polarization of heterojunction planes and exciton-phonon interaction on values of the exciton transition energy in lead diiodide nanofilms placed into dielectric ambience (glass or polymer). The heterojunction is considered to be unloaded, nanosystem is modeled with an infinite deep quantum well and characterized by an essential difference between dielectric permeabilities in both sides of the heterojunction. Calculated in the work are dependences of the exciton energy on the nanofilm thickness and temperature. The results of calculations are in accordance with the known data of experimental measurements.

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Quantum Size Effects in the Photonics of Semiconductor Nanoparticles

et al. 2005

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The appearance of quantum size effects in ultradisperse semiconductors, their quantitative analysis, and their effect on the absorption of light and on the photophysical (vibrational relaxation of photogenerated "hot" charge carriers, band-band and "defect" luminescence) and certain primary photochemical processes (the accumulation of excess negative charge by the semiconductor nanoparticles, interphase electron transfer, etc.) are discussed.

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Optical spectra of microcrystals of the layered semiconductor PbI2 grown in glass matrices

Cited by 3 publications

References 5 publications

Temperature changes in the function of the shape inherent to the band of exciton absorption in nanofilm of layered semiconductor

Temperature changes in the function of the shape inherent to the band of exciton absorption in nanofilm of layered semiconductor

Temperature changes of the exciton transition energy in lead di-iodide nanofilms

Quantum Size Effects in the Photonics of Semiconductor Nanoparticles

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