Controlling Spontaneous Emission from Perovskite Nanocrystals with Metal–Emitter–Metal Nanostructures

Tjahjana, Liliana; Lee, Kwan; Chin, Xin Yu; Tobing, Landobasa Y. M.; Adhyaksa, Gede W. P.; Zhang, Dao Hua; Birowosuto, Muhammad Danang; Wang, Hong

doi:10.3390/cryst11010001

Cited by 5 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LHP NCs have been demonstrated to be excellent candidates for X-ray imaging applications as well, ,, combining the properties of three-dimensional hybrid perovskites and the quantum confinement effects of NC scintillators. , Unlike most crystalline scintillators on the market, synthesis and deposition of LHP NCs are carried out via solution processes at low temperature ( T < 200 °C) without the requirement of high vacuum technology, potentially leading to reduced production costs. In this work, we explore the emission and scintillation properties of three LHP NCs with different compositions, which have previously been shown to possess very promising optoelectronic properties, such as high quantum yields: cesium lead bromide (CsPbBr 3 ), , formamidinium lead bromide (FAPbBr 3 ), and cesium lead iodide (CsPbI 3 ) upon high-energy photon excitation. The X-ray attenuation lengths of those NCs vary from 0.004 to 0.014 cm at an energy of 50 keV, see Figure S1.…”

Section: Introductionmentioning

confidence: 99%

Deterministic Light Yield, Fast Scintillation, and Microcolumn Structures in Lead Halide Perovskite Nanocrystals

Maddalena

Xie

Chin³

et al. 2021

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

Lead halide perovskite (LHP) nanocrystals (NCs) have recently attracted attention due to both their high quantum yield and their potential for X-ray imaging applications. In this paper, we investigated the scintillation properties of three different LHP NCs; CsPbBr 3 , FAPbBr 3 , and CsPbI 3 . The featured NCs exhibited high X-ray excited luminescence (XL) at cryogenic temperatures. While FAPbBr 3 and CsPbI 3 NCs display thermal quenching, CsPbBr 3 NCs show negative thermal quenching and high XL at high temperatures, with a light yield of 24,000 ± 2,100 photons/MeV at 300 K. The LHP NCs exhibit a small afterglow and low trap density and exhibit a very fast XL decay time, under 20 ns, faster than those of some currently used commercial scintillators. Overall, CsPbBr 3 NCs are the best performing materials investigated here, making them particularly attractive for fast-timing applications such as positron emission tomography or particle detectors in high-energy physics. In the end, we demonstrate the proof of concept for using a CsPbBr 3 NC matrix for imaging applications and the flexibility of NCs for developing microstructure scintillators.

show abstract

Section: Introductionmentioning

confidence: 99%

Deterministic Light Yield, Fast Scintillation, and Microcolumn Structures in Lead Halide Perovskite Nanocrystals

Maddalena

Xie

Chin³

et al. 2021

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…As examples, the parameters of eight leading scintillator materials are used in the simulation. [54][55][56][57][58][59][60][61] By varying the scintillator thickness, the decay rate (Γ) of the scintillators can be enhanced by over ten times by the introduction of plasmonic film through Purcell effect, especially for scintillator of small thicknesses. For further theoretical exploration and experimental demonstration, we focus on (BA) 2 PbBr 4 as the scintillator material of choice due to two reasons: First, it is cost-effective and relatively easy to grow because it is a solution processable material, making it promising for commercialization [17] ; Second, it features both high light yield (40 ± 4 ph/keV) and fast decay times (3.3 ± 0.3 ns), which are critical in optimizing the performance of time-of-flight imaging systems and photon counting computed tomography.…”

Section: Resultsmentioning

confidence: 99%

The Nanoplasmonic Purcell Effect in Ultrafast and High‐Light‐Yield Perovskite Scintillators

Ye,

Yong,

et al. 2024

Advanced Materials

Self Cite

View full text Add to dashboard Cite

The development of X‐ray scintillators with ultrahigh light yields and ultrafast response times is a long sought‐after goal. In this work, we theoretically predict and experimentally demonstrate a fundamental mechanism that pushes the frontiers of ultrafast X‐ray scintillator performance: the use of nanoscale‐confined surface plasmon polariton modes to tailor the scintillator response time via the Purcell effect. By incorporating nanoplasmonic materials in scintillator devices, this work predicts over 10‐fold enhancement in decay rate and 38% reduction in time resolution even with only a simple planar design. we experimentally demonstrate the nanoplasmonic Purcell effect using perovskite scintillators, enhancing the light yield by over 120% to 88 11 ph/keV, and the decay rate by over 60% to 2.0 0.2 ns for the average decay time, and 0.7 0.1 ns for the ultrafast decay component, in good agreement with the predictions of our theoretical framework. we perform proof‐of‐concept X‐ray imaging experiments using nanoplasmonic scintillators, demonstrating 182% enhancement in the modulation transfer function at 4 line pairs per millimeter spatial frequency. This work highlights the enormous potential of nanoplasmonics in optimizing ultrafast scintillator devices for applications including time‐of‐flight X‐ray imaging and photon‐counting computed tomography.This article is protected by copyright. All rights reserved

show abstract

“…Approaches to improve these properties include engineering the scintillator’s atomic composition , and developing new materials − to optimize the decay rate and scintillator efficiency. Other approaches include implementing the scintillator as a thin film and adding photonic crystals (PhCs) as coatings − to enhance the photon extraction efficiency. In the latter case, PhCs are only used to manipulate the already-created scintillation emission, as opposed to the intrinsic emission properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Bizarri

Birowosuto

et al. 2022

ACS Photonics

Self Cite

View full text Add to dashboard Cite

Scintillators are materials that emit visible photons when bombarded by high-energy particles (X-ray, γ-ray, electrons, neutrinos, etc.) and are crucial for applications, including X-ray imaging and high-energy particle detection. Here, we show that one-dimensional (1D) photonic crystal (PhC) cavities, added externally to scintillator materials, can be used to tailor the intrinsic emission spectrum of scintillators via the Purcell effect. The emission spectral peaks can be shifted, narrowed, or split, improving the overlap between the scintillator emission spectrum and the quantum efficiency (QE) spectrum of the photodetector. As a result, the overall photodetector signal can be enhanced by over 200%. The use of external PhC cavities especially benefits thick and large-area scintillators, which are needed to stop particles with ultrahigh energy, as in large-area neutrino detectors. Our findings should pave the way to greater versatility and efficiency in the design of scintillators for applications, including X-ray imaging and positron emission tomography.

show abstract

Controlling Spontaneous Emission from Perovskite Nanocrystals with Metal–Emitter–Metal Nanostructures

Cited by 5 publications

References 31 publications

Deterministic Light Yield, Fast Scintillation, and Microcolumn Structures in Lead Halide Perovskite Nanocrystals

Deterministic Light Yield, Fast Scintillation, and Microcolumn Structures in Lead Halide Perovskite Nanocrystals

The Nanoplasmonic Purcell Effect in Ultrafast and High‐Light‐Yield Perovskite Scintillators

Enhancing Large-Area Scintillator Detection with Photonic Crystal Cavities

Contact Info

Product

Resources

About