Superbroad near-infrared photoluminescence from bismuth-doped CsPbI_3 perovskite nanocrystals

Zhu, Fu-Ping; Yong, Zi-Jun; Liu, Bo‐Mei; Chen, Ya-Meng; Zhou, Yang; Ma, Jun; Sun, Hong‐Tao; Fang, Yongzheng

doi:10.1364/oe.25.033283

Cited by 34 publications

(20 citation statements)

References 32 publications

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“…Fluorescent Bi semiconductor nanomaterials have generated great interest for a variety of promising applications, [26,64,[232][233][234] especially those in biosensors. [14,64,235] For example, in 2017, an efficient hot-pressing method was developed by Hussain et al [26] to fabricate free-standing 2D Bi nanosheets with an ultrathin thickness of ≈2 nm from 0D Bi nanoparticles on an Si substrate, which displayed morphology and structural dependent improved broad range photoemission in the visible region of the spectrum.…”

Section: Photoluminescencementioning

confidence: 99%

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Huang

Zhu

Wang

et al. 2020

Adv Funct Materials

140

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Bismuth (Bi), as a nontoxic and inexpensive diamagnetic heavy metal, has recently been utilized for the preparation of a variety of nanomaterials, such as nanoparticles, nanowires, nanotubes, nanosheets, etc., with a tunable bandgap, unique structure, excellent physicochemical properties, and compositional features for versatile properties, such as near‐infrared absorbance, high X‐ray attenuation coefficient, excellent photothermal conversion efficiency, and a long circulation half‐life. These features have endowed mono‐elemental Bi nanomaterials with desirable performances for electronics/optoelectronics, energy storage and conversion, catalysis, nonlinear photonics, sensors, biomedical applications, etc. This review summarizes the controlled synthesis of mono‐elemental Bi nanomaterials with different shapes and sizes, highlights the state‐of‐the‐art progress of the desired applications of mono‐elemental Bi nanomaterials, and presents some personal insights on the challenges and future opportunities in this research area. It is hoped that the controllable manipulation techniques of Bi nanomaterials, along with their unique properties, can shed light on the next‐generation devices based on Bi nanostructures and Bi‐related nanomaterials.

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Section: Photoluminescencementioning

confidence: 99%

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Huang

Zhu

Wang

et al. 2020

Adv Funct Materials

140

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“…For example, the PLQY of Yb 2+ -doped CsPbI3 QDs reached 75% [15]; the PLQY of Sr 2+ , Sn 2+ -doped CsPbI3 QDs was over 80% [16][17][18]; the PLQY of Ni 2+ -doped CsPbI3 QDs was 95% which was the highest value among reported literature [19]. Up to now, the dopant of CsPbI3 QDs is just limited to several elements, and the PLQYs of the most products are still not high enough to meet the requirements of some special application [20,21].…”

Section: Introductionmentioning

confidence: 84%

Synthesis and photoluminescence kinetics of Ce3+-doped CsPbI3 QDs with near-unity PLQY

et al. 2021

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CsPbI 3 perovskite quantum dots (QDs) have great potential in optoelectronic devices due to their suitable band-gaps, but low photoluminescence quantum yields (PLQYs) and poor phase stability seriously impede their practical application. This paper reports the synthesis of Ce 3+ -doped CsPbI 3 QDs by a hot injection method. In the presence of the dopant (Ce 3+ ), the highest PLQY of CsPbI 3 QDs reached 99%, i.e., near-unity PLQY, and the photoluminescence (PL) emission of CsPbI 3 QDs could be well maintained compared to that of the undoped ones. The photoluminescence kinetics of Ce 3+ -doped CsPbI 3 QDs was investigated by the ultrafast transient absorption technologies, which exhibited that the Ce 3+ not only increased the density of excitonic states close to the high energy excitonic states (HES), but also provided more emissive channels. Moreover, the radiative recombination rates calculated by the combination of PL lifetime and PLQY further illustrated the Pb 2+ vacancies were filled with Ce 3+ ions so that the PL quenching of the CsPbI 3 QDs could be effectively prevented. The theoretic analysis uncovered the mechanism of the high PLQY and stable PL emission of the Ce 3+ -doped CsPbI 3 QDs.

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“…In a similar work, Zhu et al also investigated the material properties of Bi-doped CsPbI 3 NCs. [74] They observed that the emission colour of the NC solution changed from red to brown with increasing the Bi 3 + doping concentration. Interestingly, although they noticed decreased band-edge PL emission at 680 nm with increasing Bi 3 + doping concentration, an ultrawide near infrared (NIR) emission from 800 to 1600 nm peaked at 1145 nm were also detected in Bi-doped CsPbI 3 NCs, while no such NIR emission appeared in undoped parent NCs.…”

Section: Heterovalent B-site Metal Doping/alloying Of Perovskite Ncsmentioning

confidence: 99%

“…In a similar work, Zhu et al . also investigated the material properties of Bi‐doped CsPbI 3 NCs . They observed that the emission colour of the NC solution changed from red to brown with increasing the Bi 3+ doping concentration.…”

Section: Metal Doping/alloying Of Perovskite Ncsmentioning

confidence: 99%

Metal Doping/Alloying of Cesium Lead Halide Perovskite Nanocrystals and their Applications in Light‐Emitting Diodes with Enhanced Efficiency and Stability

Kumawat

Yuan

Bai

et al. 2019

Israel Journal of Chemistry

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Metal halide perovskite nanocrystals (NCs) have demonstrated great advances for light‐emitting diodes (LEDs) applications, owing to their excellent optical, electrical properties and cost‐effective solution‐processing potentials. Tremendous progress has been made in perovskite NCs‐based LEDs during the past several years, with the external quantum efficiency (EQE) boosted to over 20 %. Recently, metal doping/alloying strategy has been explored to finely tune the optoelectronic properties and enhance material stability of perovskite NCs, leading to further improved device efficiency and stability of the obtained perovskite NCs‐based LEDs. In this review, we summarize recent progress on the metal doping/alloying of perovskite NCs and their applications in LEDs. We focus on the effects of different metal doping strategies on the structural and optoelectronic properties of the perovskite NCs. In addition, several works on high‐performance LEDs based on metal doped/alloyed perovskite NCs with different light emission colours are highlighted. Finally, we present an outlook on employing metal doping/alloying strategies to further improve the device efficiency and stability of LEDs based on perovskite NCs.

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Superbroad near-infrared photoluminescence from bismuth-doped CsPbI_3 perovskite nanocrystals

Cited by 34 publications

References 32 publications

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Synthesis and photoluminescence kinetics of Ce3+-doped CsPbI3 QDs with near-unity PLQY

Metal Doping/Alloying of Cesium Lead Halide Perovskite Nanocrystals and their Applications in Light‐Emitting Diodes with Enhanced Efficiency and Stability

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