Semiconductor nanocrystals‐based triplet‐triplet annihilation photon‐upconversion: Mechanism, materials and applications DOI Creative Commons

Kezhou Chen,

Qingxin Luan, Tiegen Liu

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Abstract Triplet‐triplet annihilation photon upconversion (TTA‐UC) has emerged as a promising strategy for enhancing solar energy harvesting efficiency by converting two low‐energy, long‐wavelength photons into high‐energy, short‐wavelength photon. In recent years, semiconductor nanocrystals have gained significant attention efficient photosensitizers TTA‐UC due to their excellent triplet transfer and the ability tune bandgap across spectrum. This review focuses on mechanism of NC‐based TTA‐UC, emphasizing key parameters evaluate performance systems. The influence various material‐related factors overall is thoroughly discussed. Moreover, advances in solid‐state approaches are highlighted, along with an overview current status applications this field. Lastly, identifies challenges opportunities that lie ahead future development providing insights potential advancements directions further research.

Language: Английский

Recent advances in photocatalytic advanced oxidation processes for organic compound degradation: A review DOI Creative Commons
Eman H. Khader,

Safaa A. Muslim,

Noori M. Cata Saady

et al.

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 318, P. 100384 - 100384

Published: April 1, 2024

Advanced oxidation processes (AOPs) have become increasingly more useful and necessary in the past few decades because they can degrade a wide range of organic inorganic contaminants. The toxic recalcitrant nature many contaminants obstruct traditional biological processes, making treatment ineffective. Therefore, there is pressing need to develop apply effective for industrial wastewater, polluted by pharmaceuticals, dyes, other industries. AOPs successful technologies treating wastewater remove contaminants, reduce toxicity, improve biodegradability, including using ultraviolet (UV) visible light (VIS) combined with homogenous or heterogeneous catalysts. This review shows that Fenton process semiconductor material greatly facilitates removing various pollutants. Additionally, photocatalysis research ongoing this method effectively removes emerging In addition, challenges, needs, future uses are described performance hasten large-scale implementation water treatment.

Language: Английский

Citations

62
Donor-acceptor bulk-heterojunction sensitizer for efficient solid-state infrared-to-visible photon up-conversion DOI Creative Commons
Pengqing Bi, Tao Zhang, Yuanyuan Guo

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 8, 2024

Solid-state infrared-to-visible photon up-conversion is important for spectral-tailoring applications. However, existing systems not only suffer from low efficiencies and a need high excitation intensity, but also exhibit limited selection of materials complex fabrication processes. Herein, we propose sensitizer with bulk-heterojunction structure, comprising both an energy donor acceptor, triplet-triplet annihilation devices. The occurs through charge separation at the donor-acceptor interface, followed by formation transfer state between annihilator following spin statistics. ensures efficient generation recombination. Hence, achieve highly solid-state device 2.20% efficiency intensity (10 mW cm

Language: Английский

Citations

6
Weak Near‐Infrared Light Visualization Enabled by Smart Multifunctional Optoelectronics DOI Open Access
Pengqing Bi, Jianqiu Wang,

Zhihao Chen

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Visualizing weak NIR light is critical for sensing, imaging, and communication, but remains challenging due to inefficient detection upconversion (UC) mechanisms. A smart NIR-to-visible photon-UC organic optoelectronic device reported that integrates photodetection, light-emitting diode (LED), photovoltaic capabilities enable clear visualization of light. The programmable has continuous photodetection monitoring the incident intensity. When intensity falls below a preset threshold, LED function automatically triggered compensate UC emission, amplifying visualization. multifunctional uses carefully designed ternary bulk heterojunction sensitizer doped with rubrene:DBP as emitter. It demonstrates high efficiency (>1.5%) from 808 608 nm, allowing without external power under strong illumination. also shows excellent photoresponsivity 0.35 W-1 at 800 nm specific detectivity reaching 10¹2-10¹3 Jones, enabling sensitive low-light conditions. exhibits low turn-on voltage (0.9 V) luminance exceeding 1200 cd m- 2 5 V, ensuring energy-efficient compensation. Furthermore, it achieves >10% conversion efficiency, sustainable self-powered operation. This multifunctional, high-performance system offers great potential in energy harvesting, display technologies.

Language: Английский

Citations

0
Automated Research Platform for Development of Triplet–Triplet Annihilation Photon Upconversion Systems DOI Creative Commons
Paulius Baronas, Justas Lekavičius, Maciej Majdecki

et al.

ACS Central Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Triplet-triplet annihilation photon upconversion (TTA-UC) systems hold great promise for applications in energy, 3D printing, and photopharmacology. However, their optimization remains challenging due to the need precise tuning of sensitizer annihilator concentrations under oxygen-free conditions. This study presents an automated, high-throughput platform discovery TTA-UC systems. Capable performing 100 concentration scans just two hours, generates comprehensive maps critical parameters, including quantum yield, triplet energy transfer efficiency, threshold intensity. Using this approach, we identify key loss mechanisms both established novel At high porphyrin-based concentrations, yield losses are attributed self-quenching via aggregation triplet-triplet (sensitizer-TTA). Additionally, reverse (RTET) at elevated levels increases excitation thresholds. Testing sensitizer-annihilator pairs confirms these mechanisms, highlighting opportunities molecular design improvements. automated offers a powerful tool advancing research other photochemical studies requiring low oxygen levels, intense laser excitation, minimal material use.

Language: Английский

Citations

0
Supramolecular Nano‐Tracker for Real‐Time Tracking of Drug Release and Efficient Combination Therapy DOI Creative Commons
Xi Chen, Fangyuan Chen, Yi Lü

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 28, 2024

Real-time tracking of drug release from nanomedicine in vivo is crucial for optimizing its therapeutic efficacy clinical settings, particularly dosage control and determining the optimal window. However, most current real-time systems require a tedious synthesis purification process. Herein, supramolecular nano-tracker (SNT) capable based on non-covalent host-guest interactions presented. By integrating multiple cavities into single nanoparticle, SNT achieves co-loading drugs probes while efficiently quenching photophysical properties probe through complexation. Moreover, readily degraded under hypoxic tumor tissues, leading to simultaneous fluorescence recovery probes. With this spatial temporal consistency loading quenching, as well recovery, successfully (Pearson r = 0.9166, R

Language: Английский

Citations

2
Large enhancement of red upconversion luminescence in beta Ba2Sc0.67Yb0.3Er0.03AlO5 phosphor via Mn2+ ions doping for thermometry DOI Creative Commons
Yongtao Liu, Bin Duan, Lin Zhou

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 17, 2024

Abstract Here, this study reports single-band red upconversion emission in β-Ba 2 ScAlO 5 : Yb 3+ /Er phosphor by doping Mn 2+ . The optimum concentration of ions was 0.20. intensity and green emissions is increased 27.4 19.3 times, respectively. Compared with the samples without ions, red-green integral strength ratio /Mn sample significantly 28.4 reaching 110.9. UCL mechanism explored analyzing down-conversion luminescence spectra, absorption fluorescence lifetime decay curves co-doped enhancement light achieved through energy transfer between defect bands Er as well ions. In addition, doped phosphors have great potential for ambient temperature sensing 298–523 K range. maximum sensitivity a sensor at 523 0.0247 −1

Language: Английский

Citations

1
Triplet‐triplet annihilation upconversion DOI
Line Næsborg,

Rubaishan Jeyaseelan

Nachrichten aus der Chemie, Journal Year: 2024, Volume and Issue: 72(9), P. 62 - 64

Published: Aug. 30, 2024

Abstract Triplet‐triplet annihilation upconversion can generate UV light from visible LEDs and infrared. Producing higher‐energy photons at the location where they are needed is useful: some functional groups do not tolerate irradation with light, does penetrate cells polymers as deep infrared light.

Language: Английский

Citations

0
Application of UV-A and Blue Light Emitting Diodes Within the Range of 320-480 nm on Quality and Shelf-Life Extension of Food Products DOI Creative Commons
Eskindir E. Tadesse, Piotr Kulawik, Andrzej Szymkowiak

et al.

Food and Bioproducts Processing, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

0
Semiconductor nanocrystals‐based triplet‐triplet annihilation photon‐upconversion: Mechanism, materials and applications DOI Creative Commons

Kezhou Chen,

Qingxin Luan, Tiegen Liu

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Abstract Triplet‐triplet annihilation photon upconversion (TTA‐UC) has emerged as a promising strategy for enhancing solar energy harvesting efficiency by converting two low‐energy, long‐wavelength photons into high‐energy, short‐wavelength photon. In recent years, semiconductor nanocrystals have gained significant attention efficient photosensitizers TTA‐UC due to their excellent triplet transfer and the ability tune bandgap across spectrum. This review focuses on mechanism of NC‐based TTA‐UC, emphasizing key parameters evaluate performance systems. The influence various material‐related factors overall is thoroughly discussed. Moreover, advances in solid‐state approaches are highlighted, along with an overview current status applications this field. Lastly, identifies challenges opportunities that lie ahead future development providing insights potential advancements directions further research.

Language: Английский

Citations

0