Energy transfer engineering enabled efficient and broad-band near-infrared emission

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638379" target="_blank" >RIV/68378271:_____/25:00638379 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/25:00387273

Výsledek na webu

<a href="https://doi.org/10.1021/acsenergylett.5c01712" target="_blank" >https://doi.org/10.1021/acsenergylett.5c01712</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsenergylett.5c01712" target="_blank" >10.1021/acsenergylett.5c01712</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy transfer engineering enabled efficient and broad-band near-infrared emission

Popis výsledku v původním jazyce

Near-infrared (NIR) light is crucial for medical diagnostics, industrial inspection, and military applications, but achieving both broad-band and efficient NIR luminescence remains challenging. Here, we propose an energy transfer strategy in low-dimensional halides to enable efficient NIR emission, exemplified by zero-dimensional Cs4CaI6:Yb2+,Sm2+. The optimized Cs4CaI6:1%Yb,3%Sm single crystals exhibit high internal and external quantum efficiencies of 73.3% and 47.8% in the NIR region, respectively, resulting from effective Yb2+→Sm2+ energy transfer. When integrated with a commercial blue-light-emitting chip, a record NIR photoelectric conversion efficiency of 31.0% is achieved. Moreover, Cs4CaI6:1%Yb,3%Sm exhibits an exceptional scintillation efficiency of 52,000 photons/MeV, representing a state-of-the-art performance among NIR scintillators. Its bright NIR scintillation enables clear imaging with polydimethylsiloxane-based scintillation screens, even under ambient light conditions, paving the way for portable outdoor X-ray imaging. This work provides an effective approach to achieve NIR emission for light-emitting diodes and scintillation applications.

Název v anglickém jazyce

Energy transfer engineering enabled efficient and broad-band near-infrared emission

Popis výsledku anglicky

Near-infrared (NIR) light is crucial for medical diagnostics, industrial inspection, and military applications, but achieving both broad-band and efficient NIR luminescence remains challenging. Here, we propose an energy transfer strategy in low-dimensional halides to enable efficient NIR emission, exemplified by zero-dimensional Cs4CaI6:Yb2+,Sm2+. The optimized Cs4CaI6:1%Yb,3%Sm single crystals exhibit high internal and external quantum efficiencies of 73.3% and 47.8% in the NIR region, respectively, resulting from effective Yb2+→Sm2+ energy transfer. When integrated with a commercial blue-light-emitting chip, a record NIR photoelectric conversion efficiency of 31.0% is achieved. Moreover, Cs4CaI6:1%Yb,3%Sm exhibits an exceptional scintillation efficiency of 52,000 photons/MeV, representing a state-of-the-art performance among NIR scintillators. Its bright NIR scintillation enables clear imaging with polydimethylsiloxane-based scintillation screens, even under ambient light conditions, paving the way for portable outdoor X-ray imaging. This work provides an effective approach to achieve NIR emission for light-emitting diodes and scintillation applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EF16_019%2F0000760" target="_blank" >EF16_019/0000760: Fyzika pevných látek pro 21. století</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Energy Letters

ISSN

2380-8195

e-ISSN

2380-8195

Svazek periodika

10

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

3681-3688

Kód UT WoS článku

001526334300001

EID výsledku v databázi Scopus

2-s2.0-105010183691