Observation of correlated barrier hopping in blue luminescent PbI 2 nanoparticles

N. Chakrabarty; A. Mukherjee; S. Sinha; S. Basu; A. K. Meikap

doi:10.1016/j.physe.2014.06.022

Observation of correlated barrier hopping in blue luminescent PbI ₂ nanoparticles

N. Chakrabarty, A. Mukherjee, S. Sinha, S. Basu, A. K. Meikap

National Institute of Technology, Durgapur

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Hexagonally shaped lead iodide nanoparticles were synthesized by a simple chemical route. Well crystallized nature of the sample was confirmed by X-ray diffraction patterns. Transmission electron microscopy shows that the particles are hexagonally shaped and the average particle size is estimated to be 16-18 nm. The band gap of the nanoparticles was found to be 3.54 eV. Photoluminescence spectra show some distinct blue light emission in the visible region around 408 nm. Mechanism of dc and ac transport was analyzed in the temperature range 298-523 K and in the frequency range 20 Hz-2 MHz. The activation energies are estimated from both dc and ac data and found to be in good agreement.

Original language	English
Pages (from-to)	134-140
Number of pages	7
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	64
DOIs	https://doi.org/10.1016/j.physe.2014.06.022
State	Published - Nov 2014
Externally published	Yes

Keywords

Chemical route
Dielectric properties
Electrical conductivity
Lead iodide
Optical properties

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10.1016/j.physe.2014.06.022

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abstract = "Hexagonally shaped lead iodide nanoparticles were synthesized by a simple chemical route. Well crystallized nature of the sample was confirmed by X-ray diffraction patterns. Transmission electron microscopy shows that the particles are hexagonally shaped and the average particle size is estimated to be 16-18 nm. The band gap of the nanoparticles was found to be 3.54 eV. Photoluminescence spectra show some distinct blue light emission in the visible region around 408 nm. Mechanism of dc and ac transport was analyzed in the temperature range 298-523 K and in the frequency range 20 Hz-2 MHz. The activation energies are estimated from both dc and ac data and found to be in good agreement.",

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AU - Mukherjee, A.

AU - Sinha, S.

AU - Basu, S.

AU - Meikap, A. K.

PY - 2014/11

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AB - Hexagonally shaped lead iodide nanoparticles were synthesized by a simple chemical route. Well crystallized nature of the sample was confirmed by X-ray diffraction patterns. Transmission electron microscopy shows that the particles are hexagonally shaped and the average particle size is estimated to be 16-18 nm. The band gap of the nanoparticles was found to be 3.54 eV. Photoluminescence spectra show some distinct blue light emission in the visible region around 408 nm. Mechanism of dc and ac transport was analyzed in the temperature range 298-523 K and in the frequency range 20 Hz-2 MHz. The activation energies are estimated from both dc and ac data and found to be in good agreement.

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KW - Dielectric properties

KW - Electrical conductivity

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KW - Optical properties

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Observation of correlated barrier hopping in blue luminescent PbI ₂ nanoparticles

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Keywords

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