Optical and structural properties of ZnO thin films prepared by spray pyrolysis for enhanced efficiency perovskite solar cell application

Kumari, Nitu; Patel, Sanjaykumar R.; Gohel, Jignasa V.

doi:10.1007/s11082-018-1376-5

Cited by 30 publications

(9 citation statements)

References 35 publications

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“…Nitu kumara et al, reported the decrease in the intensity of ZnO thin film at higher substrate temperature. The decreasing trend was due to the incomplete conversion of Zinc precursor to ZnO [27] The XRD parameter such as crystallite size (D), lattice strain (ɛ) and dislocation density (δ) is found to decrease with substrate temperature. The decrease in the value of dislocation density (δ) implies the film has few lattice defects.…”

Section: Structural Characterizationmentioning

confidence: 98%

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Visweswaran

Venkatachalapathy

Haris

et al. 2021

Preprint

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ZnO thin film deposited on the glass substrate at various substrate temperature by spray technique using perfume atomizer. The deposited ZnO thin films are annealed at 450ºC. The deposited films are highly transparent and adhered to the substrate. The structure and microstructural, morphological, compositional, optical and luminescent characteristics were studied by X-ray diffraction (XRD), Raman, Field emission scanning electron microscope (FE-SEM with EDX), Atomic force microscope (AFM), Ultra violet visible spectrophotometer (UV-Vis) and photoluminescence spectroscopic techniques. The crystalline nature of annealed film were confirmed from XRD and the shows preferred orientation along (1 0 1) plane. At higher substrate temperature, reorientation of planes was seen. The spherical shaped grains are observed from morphological studies. The roughness of ZnO film, one of the key parameter obtained from AFM, increases with substrate temperature. The high transparency of about 80% in visible region are obtained for ZnO film with band gap ranging from 3.24 – 3.19 eV. The presence of defects in ZnO films are identified from PL bands. The electronic vibrations in ZnO film were understood from Raman spectra. The weak ferromagnetic behavior at room temperature is observed and exchange interactions stemming from oxygen vacancy produce BMP and subject to RTFM in ZnO.

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Section: Structural Characterizationmentioning

confidence: 98%

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Visweswaran

Venkatachalapathy

Haris

et al. 2021

Preprint

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“…Their results indicated that TiO 2 could form a mesoporous structure with excellent network and crystallinity by the spray coating, which significantly increases the roughness and obtain a thinner mesoporous layer, resulting in the reduced loss of charge in the mesoporous layer. However, Kumari et al [ 67 ] prepared ZnO films by a simple spraying method, applied it into PSCs, and investigated the influence of the preparation parameters systematically: 1) precursor solution concentration; 2) substrate temperature; 3) spray gas pressure; and 4) solution flow rate on the optical, structural, and morphological characteristics of ZnO films. Without a doubt, the results indicated that the precursor concentration and substrate temperature affect the thickness, roughness, and bandgap of the film.…”

Section: Preparation and Characteristics Of Electron Transport Materialsmentioning

confidence: 99%

Doping in Semiconductor Oxides‐Based Electron Transport Materials for Perovskite Solar Cells Application

et al. 2021

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From the perspective of the device structure of perovskite solar cells (PSCs), the electron transport layer is one of the essential components and plays a significant role in suppressing carrier recombination. Furthermore, its decisiveness is related to the quality of perovskite film, the rapid interface carrier extraction, and the bandgap alignment. However, the deficiency of the semiconductor oxides based electron transport materials, especially for most studied TiO2, is that their carrier mobility is one to three orders of magnitude lower than the most commonly used hole transport materials, leading to an imbalanced carrier flux and unpredicted hysteresis. Doping new ions are the most effective ways to improve electron mobility and tune the bandgap, while the fundamental mechanism of doping in the majority of cases are still lacking. Herein, the doping effect on semiconductor oxides is reviewed and emphasized by classifying the doping ions according to the critical factors of lattice optimization, a carrier transporting improvement, and interface modification. This review is the first systematic summary of the ion doping characteristics in oxide electron transport layers of PSCs. Finally, the implementation of doping ions in electron transport materials is briefly discussed for further enhancing the photovoltaic performance of PSCs.

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“…According to different ways of dispersing the droplets, it can be further classified, such as pneumatic spraying (through fast gas flow), ultrasonic spraying (through ultrasonic vibration), or electrospraying (through electrical repulsion). Among these spray methods, ultrasonic spraying is commonly introduced to fabricate perovskite layer and ETL [172][173][174][175]. Several droplets need to overlap in a local area, in other words, multiple spraying needs to be carried out to ensure full coverage.…”

Section: Spray Coatingmentioning

confidence: 99%

Major Impediment to Highly Efficient, Stable and Low-Cost Perovskite Solar Cells

Zhang

et al. 2018

Metals

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Organic–inorganic hybrid perovskite solar cells (PSCs) have made immense progress in recent years, owing to outstanding optoelectronic properties of perovskite materials, such as high extinction coefficient, carrier mobility, and low exciton binding energy. Since the first appearance in 2009, the efficiency of PSCs has reached 23.3%. This has made them the most promising rival to silicon-based solar cells. However, there are still several issues to resolve to promote PSCs’ outdoor applications. In this review, three crucial aspects of PSCs, including high efficiency, environmental stability, and low-cost of PSCs, are described in detail. Recent in-depth studies on different aspects are also discussed for better understanding of these issues and possible solutions.

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Optical and structural properties of ZnO thin films prepared by spray pyrolysis for enhanced efficiency perovskite solar cell application

Cited by 30 publications

References 35 publications

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Doping in Semiconductor Oxides‐Based Electron Transport Materials for Perovskite Solar Cells Application

Major Impediment to Highly Efficient, Stable and Low-Cost Perovskite Solar Cells

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Optical and structural properties of ZnO thin films prepared by spray pyrolysis for enhanced efficiency perovskite solar cell application

Cited by 30 publications

References 35 publications

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO&nbsp;Thin Film

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO&nbsp;Thin Film

Doping in Semiconductor Oxides‐Based Electron Transport Materials for Perovskite Solar Cells Application

Major Impediment to Highly Efficient, Stable and Low-Cost Perovskite Solar Cells

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Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film