Effect of doping on trapping center parameters in nanocrystalline CdSe thin films

Al-Kabbi, Alaa S.; Sharma, Kriti; Saini, G. S. S.; Tripathi, S. K.

doi:10.1016/j.jallcom.2012.12.038

Cited by 17 publications

(4 citation statements)

References 34 publications

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“…5 According to previous research, as the doping quantity increases, so does the density of copper-induced shallow defect states. 42 This phenomenon is consistent with observations in current PL studies, where increasing the amount of copper doping results in additional quenching of the PL intensity due to the enhanced charge-transfer from CB to the higher density defect states. This escalation adds to an increased transfer of charge carriers from the band edge to newly emerging defect states.…”

supporting

confidence: 91%

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Kumar,

Shukla,

Kaur

et al. 2024

J. Phys. Chem. Lett.

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supporting

confidence: 91%

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Kumar,

Shukla,

Kaur

et al. 2024

J. Phys. Chem. Lett.

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“…For light trapping in thin film [20][21][22][23][24][25][26] solar cells, an alternative method is to take advantage of the strong local field enhancement around the noble metallic nanoparticles. Noble metallic nanoparticles store incident photon energy in a localized surface plasmon mode [11].…”

Section: Light Concentration Using Particle Plasmons/near-field Enhan...mentioning

confidence: 99%

Progress in Plasmonic Enhanced Bulk Heterojunction Organic/Polymer Solar Cells

Tripathi

Sachdeva

Sharma³

et al. 2014

SSP

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To reduce the cost of solar electricity, there is an enormous potential of thin-film photovoltaic technologies. An approach for lowering the manufacturing costs of solar cells is to use organic (polymer) materials that can be processed under less demanding conditions. Organic/polymer solar cells have many intrinsic advantages, such as their light weight, flexibility, and low material and manufacturing costs. But reduced thickness comes at the expense of performance. However, thin photoactive layers are widely used, but light-trapping strategies, due to the embedding of plasmonic metallic nanoparticles have been shown to be beneficial for a better optical absorption in polymer solar cells. This article reviews the different plasmonic effects occurring due to the incorporation of metallic nanoparticles in the polymer solar cell. It is shown that a careful choice of size, concentration and location of plasmonic metallic nanoparticles in the device result in an enhancement of the power conversion efficiencies, when compared to standard organic solar cell devices.Contents of Paper

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“…With a band gap of 1.74 eV it is considered as a promising material for device applications such as solar cell window absorber layer, photo detectors, gas sensors, field effect transistors [1]. Properties of thin films depends on growth techniques and preparation conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ag in CdSe thin films prepared using thermal evaporation

Santhosh

Bangera

Shivakumar³

2017

Физика И Техника Полупроводников

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It has been a general practice to dope thin films with suitable dopants to modify the properties of the films to make them more suitable for potential applications. When the dopant concentrations are low, they do not normally affect the structure and morphology of the films. However, it may lead to drastic changes in electronic properties of the films. This might result from the dopant getting incorporated into the lattice of the material of the films. Cadmium selenide is an important compound semiconductor material with an attractive energy band gap. The present work relates to an attempt made to dope CdSe thin films with silver. CdSe : Ag (1 to 5%) thin films were deposited on glass substrates at an optimized substrate temperature of 453 K using thermal evaporation technique. The grown films were analyzed using X-ray diffraction, scanning electron microscopy (SEM), energy dispersive analysis of X-ray (EDX) techniques. It is observed that undoped CdSe thin films and CdSe : Ag films have hexagonal structure. The grain size was found to increase marginally with an increase in the Ag concentration. The optical band gap of the films determined by optical transmission measurements agree with that of CdSe. Electrical conductivity is observed to increase from 10 −4 to 3.66 ( · cm) −1 on addition of silver. The variation of resistance with temperature indicates that the prepared films consist of CdSe and Ag existing as two separate phases coexisting and contributing individually to the resistivity of the films.

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Effect of doping on trapping center parameters in nanocrystalline CdSe thin films

Cited by 17 publications

References 34 publications

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Progress in Plasmonic Enhanced Bulk Heterojunction Organic/Polymer Solar Cells

Effect of Ag in CdSe thin films prepared using thermal evaporation

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Effect of doping on trapping center parameters in nanocrystalline CdSe thin films

Cited by 17 publications

References 34 publications

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs2AgBiBr6 Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs2AgBiBr6 Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Progress in Plasmonic Enhanced Bulk Heterojunction Organic/Polymer Solar Cells

Effect of Ag in CdSe thin films prepared using thermal evaporation

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Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy

Unraveling Defect-Mediated Enhancement of Transient Photoconductivity and Slower Carrier’s Mobility Decay in Cu-Doped Cs₂AgBiBr₆ Nanocrystals Using Ultrafast Pump–Probe Spectroscopy