Effect of Gamma Ray Irradiation on Epitaxial Pb(Zr,Ti)O3 /SrRuO3 Tunable Varactor Devices

Barala, Surendra Singh; Banerjee, Nirupam; Kumar, Mahesh

doi:10.1007/s11664-016-4655-6

Cited by 2 publications

(2 citation statements)

References 32 publications

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“…The grain boundaries (GBs) in PSCs are important in the perovskite degradation. [27][28][29][30][31] The deep-level defects in grain boundaries 32 reduce the efficiency of PSCs, [33][34][35][36][37] and also trigger the perovskite degradation. [38][39][40] In addition, the large gap caused by the lattice mismatch at grain boundaries allows atomic, ionic, and molecular species to more smoothly diffuse through the entire perovskite film.…”

Section: Introductionmentioning

confidence: 99%

NH3+-Functionalized PAMAM Dendrimers Enhancing Power Conversion Efficiency and Stability of Perovskite Solar Cells

Fan

Zhou

et al. 2021

J. Electron. Mater.

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The introduction of polymer additives provides a simple effective method to modify perovskite grain boundaries to improve power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). In this work, the high-quality methylammonium lead triiodide (MAPbI 3 ) perovskite film is prepared by adding the protonated polyamide-amine dendrimer (NH 3 + -PAMAM) to the perovskite precursor solution to regulate the crystalline growth process. The cross-linked perovskite grain structure induced by dendritic NH 3 + -functionalized PAMAM macromolecules results in the formation of compact and pinhole-free perovskite film owing to the suppression of perovskite gain boundaries. Finally, the unsealed NH 3 + -PAMAM modified PSC device achieves the highest PCE value of 16.03%, representing an increase of 48% compared with the control PSC device. Also, the unencapsulated NH 3 + -PAMAM-modified PSC device retained 75% of initial PCE value after being exposed to an ambient environment for 20 days, which is obviously higher than 10% for the control device. The improvements of perovskite morphology and photovoltaic performance are attributed to the modification of NH 3 + -PAMAM dendrimers.Wentao Fan and Yongqiang Du have contributed equally to this work.

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Section: Introductionmentioning

confidence: 99%

NH3+-Functionalized PAMAM Dendrimers Enhancing Power Conversion Efficiency and Stability of Perovskite Solar Cells

Fan

Zhou

et al. 2021

J. Electron. Mater.

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“…There was no significant change in the surface morphology as well as the peak intensity, peak position and full width at half maximum (FWHM) in the xray diffraction (XRD) patterns. Barala et al [11] studied the change in the FWHM of the PZT (100) diffraction peak after being irradiated by different doses of γ-rays, and they found that with an increase in the radiation dose, the FWHM of the (100) diffraction peak gradually increases from 0.148 to 0.168 and the crystallinity of the PZT film decreases.…”

Section: Introductionmentioning

confidence: 99%

Irradiation behavior and recovery effect of ferroelectric properties of PZT thin films*

Zhao¹,

Zhao²,

Ju³

et al. 2021

Chinese Phys. B

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Lead zirconate titanate piezoelectric ceramics have important applications in space and aerospace technology, but the effect and physical mechanism of charged particle radiation on their performance yet to be clarified. In this study, we characterized PbZr0.52Ti0.48O3 (PZT) thin films, and changes in the ferroelectric properties of the films before and after electron and proton irradiation were investigated. The natural and heat treatment recoverability of the ferroelectric properties were studied, and the damages and mechanisms of different types of radiation in PZT films were also investigated. The results show that, in addition to ionization damages, electron irradiation causes certain structural damage on the PZT film, and the large structural damage caused by proton irradiation reduces drastically the ferroelectricity of the PZT film.

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Effect of Gamma Ray Irradiation on Epitaxial Pb(Zr,Ti)O3 /SrRuO3 Tunable Varactor Devices

Cited by 2 publications

References 32 publications

NH3+-Functionalized PAMAM Dendrimers Enhancing Power Conversion Efficiency and Stability of Perovskite Solar Cells

NH3+-Functionalized PAMAM Dendrimers Enhancing Power Conversion Efficiency and Stability of Perovskite Solar Cells

Irradiation behavior and recovery effect of ferroelectric properties of PZT thin films*

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