Temperature-induced strain management in MAPbI3-xClx hybrid perovskite films

Pandey, Anand; Kumar, Lokendra

doi:10.1016/j.physb.2021.413566

Cited by 7 publications

(5 citation statements)

References 29 publications

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“…The reduction in crystallite size on the incorporation of C 60 may be due to microstructural defects, micro-strain, and stress offered during the nucleation and growth conditions, etc. 27,28 The length of the dislocation lines per unit volume of the crystal i.e. dislocation density (δ) can also be calculated using the formula .…”

Section: Resultsmentioning

confidence: 99%

“…In view of the fact that Urbach energy is the width of the localized states available in the optical bandgap of the films. 28 These localized energy levels near the tail of the optical bandgap can be assigned due to the formation of microstructural defects. 38,39 Hence, the reduced value of E g and E u concludes that the addition of C 60 minimized the defects level presented in ZnO energy levels.…”

Section: Resultsmentioning

confidence: 99%

“…The rectifying nature of J-V characteristics of all the devices approves the formation of the Schottky junction between the Ag metal and ZnO/ZnO: C 60 semiconductor layer. 28 At a low applied field (0.1-0.2 V), voltage (V) is found to be proportional to the single power of current density (J) for all the devices which favour the ohmic behaviour of charge transport in this region. In this region, the current is mainly dominated by the tunnelling of bulk-generated electrons.…”

Section: = −mentioning

confidence: 95%

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Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Pandey¹,

Garg²,

Kumar³

2022

ECS J. Solid State Sci. Technol.

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Here, we report the synthesis of pristine and fullerene (C60) modified zinc oxide (ZnO) films by the sol-gel method. The incorporation of C60 in pristine ZnO films modifies its structural, surface morphological, optical, and electrical properties. Structural characterization suggests that pristine and C60 modified ZnO films exhibit Wurtize crystal structure. Surface morphological characterization demonstrates that incorporation of C60 into ZnO leads to the formation of spherical nano-particles which varies on the doping of C60. The properties of C60 doped ZnO films show a reduction in the bandgap values with enhanced optical absorption and photoluminescence properties. Further, the surface potential and work function of pristine and C60 incorporated ZnO films, as investigated by Kelvin probe force microscopy (KPFM) show tuning of Fermi level in pristine and C60 modified ZnO films. Also, C60 modified ZnO Schottky diodes exhibited enhanced carrier mobility with better charge transport properties.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: = −mentioning

confidence: 95%

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Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Pandey¹,

Garg²,

Kumar³

2022

ECS J. Solid State Sci. Technol.

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“…The Tauc relation, given by equation (3), was used to determine the material optical bandgap [35][36][37].…”

Section: Uv-visible Spectroscopymentioning

confidence: 99%

Experimental and theoretical investigations on fullerene (C₆₀) induced compact CH₃NH₃PbI₃ perovskite thin films

Kumar¹,

Pandey²,

Kumar³

et al. 2022

Phys. Scr.

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In the present work, pure and fullerene (C60)-doped methylammonium lead halide (CH3NH3PbI3) perovskite thin films were fabricated on glass substrates by spin coating method at different concentrations of fullerene (C60). The structural, morphological, and optical characteristics of as-prepared thin films were further analysed using experimental and computational methods. The X-ray diffraction studies of the samples confirm that perovskite films have a tetragonal structure with a preferred orientation along the (110) plane. The surface morphology of these films suggests that the incorporation of fullerene (C60) into perovskite films increased the grain size and supports the compact and pinhole-free growth of perovskite films. Also, geometrical, electronic, and optical properties were studied by using the first-principles DFT computational method. Optical properties have been studied experimentally and verified computationally .All the perovskite thin-film samples exhibit a direct band-gap which is suitable for solar cells applications.

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“…In Refs. [9][10][11][12][13][14], various PVK materials and the dependence of the band-gap energy on the refractive index were studied. A simple empirical relationship between the band-gap energy and refractive index for PVK was developed and proposed.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of the Crystalline Silicon-black Silicon-perovskite Tandem Solar Cells

Gasparyan

2023

Advanced Materials Science and Technology

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The optical properties of a tandem three-layered structure of crystalline silicon-black siliconperovskite have been theoretically studied for using it in solar energy conversion. The transfer matrix method is used for obtaining the analytical expressions for the reflection, transmission, and absorption coefficients. It is shown that the transfer matrix method can be successfully applied to the more complicated case of three layers with complex refractive indexes. Numerical calculations performed at an angle of incidence of radiation of 60 o showed that in the region of short wavelengths the reflection coefficient takes on low values (several percent), which gradually increase and become > 10% at wavelengths above 0.8 μm. The theoretically modeled results of the reflection coefficient are in good agreement with experimental data carried out for the structures crystalline silicon-black silicon-TiO 2 -perovskite. The discrepancy between the experimental and model data slowly increases with increasing wavelength. The transmittance was extremely low and increased slowly with the increasing wavelength. It is found that cheaper and easier created tandem crystalline silicon-black siliconperovskite structure may have the potential for solar energy conversion.

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Temperature-induced strain management in MAPbI3-xClx hybrid perovskite films

Cited by 7 publications

References 29 publications

Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Experimental and theoretical investigations on fullerene (C₆₀) induced compact CH₃NH₃PbI₃ perovskite thin films

Optical Properties of the Crystalline Silicon-black Silicon-perovskite Tandem Solar Cells

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Temperature-induced strain management in MAPbI3-xClx hybrid perovskite films

Cited by 7 publications

References 29 publications

Microstructural, Optical, and Work Function Tuning of Fullerene (C60) Modified Zinc Oxide Films for Optoelectronic Devices

Microstructural, Optical, and Work Function Tuning of Fullerene (C60) Modified Zinc Oxide Films for Optoelectronic Devices

Experimental and theoretical investigations on fullerene (C60) induced compact CH3NH3PbI3 perovskite thin films

Optical Properties of the Crystalline Silicon-black Silicon-perovskite Tandem Solar Cells

Contact Info

Product

Resources

About

Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Microstructural, Optical, and Work Function Tuning of Fullerene (C₆₀) Modified Zinc Oxide Films for Optoelectronic Devices

Experimental and theoretical investigations on fullerene (C₆₀) induced compact CH₃NH₃PbI₃ perovskite thin films