Power conversion efficiency of hybrid solar cells based on Camellia sinensis doped polyvinyl alcohol and ZnO nanoparticles

Rakha, Arif Allah; Shahzad, Monas; Ghaffar, Abdul; Javed, Khalid; Pervez, Aneel; Sarwar, Nasim; Munam, Mahroze

doi:10.1016/j.optmat.2021.111434

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…Zinc oxide (ZnO) has the characteristics of low cost, abundant content in nature, wide bandgap (3.37 eV), high absorption in UV region, nontoxicity, high exciton binding energy, and high mobility. [7,8] Its excellent electronic, optical, magnetic, and chemical properties have potential device applications in various fields of sensors, light-emitting diodes (LED), thin-film transistors (TFT), clear and flexible displays, piezoelectric nanogenerators, and solar cells, [9][10][11][12] becoming the most promising materials in the II-VI group of oxides. Intrinsic ZnO is an insulator, which often has disadvantages such as high resistivity and poor stability, making it unable to be directly applied to optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Effect of Substrate Temperature on Photoelectric Properties of AZO Thin Films

Zhao

Ding

Xiao

et al. 2023

Physica Status Solidi (a)

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Herein, Al-doped ZnO (AZO) thin films are prepared on quartz glass substrates by RF magnetron sputtering. The effects of substrate temperature (T s ) on the structure, morphology, electrical, and optical properties of AZO films are investigated by X-ray diffraction, field emission electron microscopy, Hall effect testing instrument, and ultraviolet spectrophotometer, respectively. The results show that the doping of Al element does not change the structure of ZnO films, and all films have typical hexagonal wurtzite structure with preferred c-axis orientation. The film sample has the strongest (002) diffraction peak and the smallest value of full-width at half-maximum at the T s value of 150 °C. With the increase of T s value, the grain size of the film increases first and then decreases. At 150 °C, the film exhibits good electrical conductivity, and its resistivity is 0.6210 À2 Ω cm, the carrier concentration is 9.8410 19 cm À3 , and the Hall mobility is 13.66 cm 2 V À1 s À1 . All samples show high transmittance, and the average transmittance in the stable visible light region is as high as 95% at the T s value of room temperature and 250 °C, and the average transmittance of all samples is above 80%. This provides a method for the application of ZnO transparent conductive films.

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Section: Introductionmentioning

confidence: 99%

Effect of Substrate Temperature on Photoelectric Properties of AZO Thin Films

Zhao

Ding

Xiao

et al. 2023

Physica Status Solidi (a)

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“…Zinc blende and rock salt are metastable [84,85]. More zinc oxides applications include solar cells [86][87][88], sensors [89,90], drug delivery [91,92], and the cosmetic industry [93].…”

Section: Zinc Oxidementioning

confidence: 99%

Photocatalytic Degradation and Adsorptive Removal of Emerging Organic Pesticides Using Metal Oxide and Their Composites: Recent Trends and Future Perspectives

et al. 2023

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For applications involving water cleanup, metal oxide nanoparticles are exceptionally successful. They are useful for the adsorption and photocatalytic destruction of organic pollutants due to their distinctive qualities, which include their wide surface/volume area, high number of active sites, porous structure, stability, recovery, and low toxicity. Metal oxide nanomaterials have drawn a lot of attention from researchers in the past ten years because of their various production pathways, simplicity in surface modification, abundance, and inexpensive cost. A wide range of metal oxides, such as iron oxides, MgO, TiO2, ZnO, WO3, CuO, Cu2O, metal oxides composites, and graphene–metal oxides composites, with variable structural, crystalline, and morphological features, are reviewed, emphasizing the recent development, challenges, and opportunities for adsorptive removal and photocatalytic degradation of organic pollutants such as dyes, pesticides, phenolic compounds, and so on. In-depth study of the photocatalytic mechanism of metal oxides, their composites, and photocatalytically important characteristics is also covered in this paper. Metal oxides are particularly effective photocatalysts for the degradation of organic pollutants due to their high photodegradation efficiency, economically sound methods for producing photo-catalytic materials, and precise band-gap engineering. Due to their detrimental effects on human health, pesticides—one of the highly hazardous organic pollutants—play a significant part in environmental contamination. Depending on where they come from and who they are targeting, they are categorized in various ways. Researchers focusing on metal oxides and their composites for the adsorptive and photocatalytic degradation of pesticides would find the review to be a beneficial resource. Detailed information on many pesticides, difficulties associated with pesticides, environmental concentration, and the necessity of degradation has been presented.

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