Cs2AgBiBr6 as a mixed anion perovskites for photovoltaic applications: A first-principle study

Wanniarachchi, W. A. Chapa Pamodani; Eidsvåg, Håkon; Arunasalam, Thevakaran; Ravirajan, Punniamoorthy; Velauthapillai, Dhayalan; Vajeeston, Ponniah

doi:10.1016/j.matpr.2022.06.063

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…It can be seen that it has a weak absorption region between 700 and 900 nm, which increases sharply between 500 and 700 nm. Cs 2 AgBiBr 6 is an indirect bandgap semiconductor, 36,37 and the Tauc plot of it is shown in Figure 2b. The Cs 2 AgBiBr 6 crystal possesses a bandgap (E g ) value of 1.81 eV, which is in proximity to the reported value.…”

Section: Resultsmentioning

confidence: 99%

Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Chen,

Huang,

Xie

et al. 2024

ACS Appl. Nano Mater.

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Lead-free double perovskites (DPs) have received a lot of attention owing to their good stability and environmental friendliness. They have been widely used in the field of optoelectronics because of their high quantum efficiency and long carrier migration distance. However, the application of leadfree DPs in ultrafast photonics is rarely explored. Cs 2 AgBiBr 6 , a typical lead-free double perovskite, has advantages such as toxicity free of Pb, high stability, and strong nonlinear absorption, showing great potential application in ultrafast photonics. However, to date, there is no reported research on the application of Cs 2 AgBiBr 6 in ultrafast optical devices. Herein, we prepared Cs 2 AgBiBr 6 nanocrystals, tested their ultrafast nonlinear absorption properties, and further prepared them as a saturable absorber (SA) to achieve stable mode-locking pulses in Er-doped fiber lasers. The results show that it has a low saturation intensity (0.75 MW/cm 2 ), resulting in a low starting threshold power (50 mW) for mode-locking. The obtained pulsed fiber laser shows a pulse width as narrow as 452 fs. In addition, the Cs 2 AgBiBr 6 SA has unique advantages in longterm stability and it was found that this Cs 2 AgBiBr 6 SA can still work well after 10 months. In general, our results prove that Cs 2 AgBiBr 6 is an excellent nonlinear optical material and has good application potential in ultrafast photonics.

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Section: Resultsmentioning

confidence: 99%

Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Chen,

Huang,

Xie

et al. 2024

ACS Appl. Nano Mater.

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Trans-polyacetylene doped Cs2AgBiBr6: Band gap reduction for high-efficiency lead-free double perovskite solar cells

Ullah,

Khan,

Ihtisham-ul-haq

et al. 2024

Results in Physics

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Heavy pnictogens-based perovskite-inspired materials: Sustainable light-harvesters for indoor photovoltaics

Schmitz,

Bhatia,

Lamberti

et al. 2023

APL Energy

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The need for self-powered electronics is progressively growing in parallel with the flourishing of the Internet of Things (IoT). Although batteries are dominating as powering devices, other small systems, such as piezoelectric, thermoelectric, and photovoltaic systems, are attracting attention. These last ones can be adapted from their classical outdoor configuration to work preferentially under indoor illumination, i.e., by harvesting the spectrum emitted by LEDs and/or fluorescent lamps. However, crystalline silicon, the classical photovoltaic material for solar panels, has a bandgap not suitable for ensuring good efficiency with such spectra. With wider bandgaps, other semiconductors can come into play for this task. Still, the materials of choice, having to be integrated within households, should also satisfy the criterion of non-toxicity and maintain low-cost production. While lead-based halide perovskites cannot represent a valuable solution for this scope, due to the strong environmental and health concerns associated with the presence of Pb, analogous compounds based on the heaviest pnictogens, i.e., bismuth and antimony, could work as sustainable light-harvesters for indoor photovoltaic devices. In this Review, we focus on reporting the most recent developments of three compounds of this class: The double perovskite Cs2AgBiBr6 is first chosen as a model system for the other two, which are emerging perovskite-inspired materials, namely, Cs3Sb2I9−xClx and bismuth oxyiodide. We show the potential of these semiconductors to play a crucial role in the future market of self-powering IoT devices, which will become a large class of devices in the electronics industry in the upcoming years.

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Cs2AgBiBr6 as a mixed anion perovskites for photovoltaic applications: A first-principle study

Cited by 3 publications

References 37 publications

Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Trans-polyacetylene doped Cs2AgBiBr6: Band gap reduction for high-efficiency lead-free double perovskite solar cells

Heavy pnictogens-based perovskite-inspired materials: Sustainable light-harvesters for indoor photovoltaics

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Cs2AgBiBr6 as a mixed anion perovskites for photovoltaic applications: A first-principle study

Cited by 3 publications

References 37 publications

Lead-Free Cs2AgBiBr6 Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Lead-Free Cs2AgBiBr6 Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Trans-polyacetylene doped Cs2AgBiBr6: Band gap reduction for high-efficiency lead-free double perovskite solar cells

Heavy pnictogens-based perovskite-inspired materials: Sustainable light-harvesters for indoor photovoltaics

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Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application

Lead-Free Cs₂AgBiBr₆ Nanocrystals with a Low Mode-Locking Threshold for Femtosecond Fiber Laser Application