Narrow-band violet light-emitting diodes based on one-dimensional lead bromides

Cheng, Teng; Xie, Yipeng; Lin, Yufan; Dong, Yiwei; Lan, Yangjie; Chen, Runan; Li, Juan; Cui, Binbin

doi:10.1016/j.jlumin.2023.119872

Journal of Luminescence

2023

DOI: 10.1016/j.jlumin.2023.119872

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Narrow-band violet light-emitting diodes based on one-dimensional lead bromides

Teng Cheng

Yipeng Xie

Yufan Lin

et al.

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Cited by 3 publications

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Efficient Deep‐Blue Light‐Emitting 2D (100)‐Oriented Perovskites and Spectral Broadening by Exciton Self‐Trapping for White‐light Emissions

Chang,

Lin,

Cheng

et al. 2024

Advanced Optical Materials

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Efficient narrow deep‐blue and broadband emissions in layered 2D organic–inorganic hybrid metal halide perovskites (MHPs) are attracting more attention and need further study. In this work, two (100)‐oriented 2D organic‐inorganic hybrid MHPs of (TFI)2PbBr4 and (TFI)2PbCl4·H2O (TFI = 4‐(trifluoromethyl)‐1H‐imidazole) with efficient deep‐blue and bluish‐white emissions are synthesized and the photoluminescence quantum yields (PLQYs) reached up to 81.21% and 20.23%, respectively. As both intrinsic lattice distortions of two crystals with similar crystal structure are almost negligible, they have theoretical deep‐blue emissions empirically. However, the halogen substitution of chlorine (Cl) by bromine (Br) broadened the deep‐blue photoluminescence to a bluish‐white area. Here, the spectral broadening phenomenon is discussed in detail. The (TFI)2PbBr4 film shows a narrow emission with a 16 nm full width at half maximum (FWHM) peaking at 435 nm upon excitation, and an ultraviolet‐pumped light‐emitting diode (LED) prepared by bluish‐white (TFI)2PbCl4·H2O phosphor shows a color rendering index (CRI) of ≈93 and a related color temperature (CCT) of 4162K, indicating their potential applications in deep‐blue and white LEDs, respectively.

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Efficient Deep‐Blue Light‐Emitting 2D (100)‐Oriented Perovskites and Spectral Broadening by Exciton Self‐Trapping for White‐light Emissions

Chang,

Lin,

Cheng

et al. 2024

Advanced Optical Materials

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2D hybrid organic-inorganic perovskite displaying narrow-band violet-blue photoluminescence

Kucheriv,

Sirenko,

Shova

et al. 2024

Journal of Luminescence

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A Review of Green Technology and its Effects in the Auto Industry

Pinaga,

Van Eweyk

2023

JEBI

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The primary objective of green technology is to in climate change management, natural environmental preservation, non-renewable resource reliance, and mitigating environmental hazards. Some of the industrial sectors that are actively investing in this type of technology include waste management, energy and transportation industries. There are a lot of positives to using this technology, but it still has to mitigate some of the challenges before it is considered a standard. The green technology industry has seen rapid expansion in recent years. The significance of green technology in mitigating threats to the environment and preserving natural resources becomes more apparent every day, as does the need for more investment in such solutions. Since the majority of the world's pollution, especially CO2 and other greenhouse gases, is produced by developing countries due to careless environmental policy implementation, addressing the issue of technology transfer is crucial. Emerging technologies for reducing emissions include improved solar cells, wind power, and electric vehicles, as discussed in this paper.

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Narrow-band violet light-emitting diodes based on one-dimensional lead bromides

Cited by 3 publications

References 50 publications

Efficient Deep‐Blue Light‐Emitting 2D (100)‐Oriented Perovskites and Spectral Broadening by Exciton Self‐Trapping for White‐light Emissions

Efficient Deep‐Blue Light‐Emitting 2D (100)‐Oriented Perovskites and Spectral Broadening by Exciton Self‐Trapping for White‐light Emissions

2D hybrid organic-inorganic perovskite displaying narrow-band violet-blue photoluminescence

A Review of Green Technology and its Effects in the Auto Industry

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