A5090531383- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- Chalcogenide Semiconductor Thin Films
- Carbon and Quantum Dots Applications
- Photochemistry and Electron Transfer Studies
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Nanocluster Synthesis and Applications
- Organic Light-Emitting Diodes Research
- Vehicle emissions and performance
- Copper-based nanomaterials and applications
- Luminescence and Fluorescent Materials
- Air Quality and Health Impacts
- Electrocatalysts for Energy Conversion
- Luminescence Properties of Advanced Materials
- Advanced battery technologies research
- Advanced Combustion Engine Technologies
- Advanced Nanomaterials in Catalysis
- Atmospheric chemistry and aerosols
- Conducting polymers and applications
- Gas Sensing Nanomaterials and Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Energy, Environment, and Transportation Policies
- Catalytic Processes in Materials Science
- Advanced Battery Materials and Technologies
Qingdao University
2017-2025
Chinese Research Academy of Environmental Sciences
2021-2024
Dalhousie University
2024
Ministry of Ecology and Environment
2023-2024
Qingdao Center of Resource Chemistry and New Materials
2018-2021
Yunnan Institute of Environmental Sciences
2014-2021
Institut National de la Recherche Scientifique
2010-2019
State Council of the People's Republic of China
2018
Varian Medical Systems (Switzerland)
2014-2017
Université du Québec
2011-2016
Resistance change under mechanical stimuli arouses mass operational heat, damaging the performance, lifetime, and reliability of stretchable electronic devices, therefore rapid thermal heat dissipating is necessary. Here we report a strain sensor with outstanding management. Besides high stretchability sensitivity testified by human motion monitoring, as well long-term durability, an enhanced conductivity from casted thermoplastic polyurethane-boron nitride nanosheets layer helps...
Highly efficient large-area luminescent solar concentrators (LSCs) were demonstrated using colloidal C-dots. The LSC (225 cm<sup>2</sup>) exhibited an external optical efficiency of 2.2% (under natural sun irradiation, 60 mW cm<sup>−2</sup>).
The fabrication of a low reabsorption emission loss, high efficient luminescent solar concentrator (LSC) is demonstrated by embedding near infrared (NIR) core/shell quantum dots (QDs) in polymer matrix. An engineered Stokes shift NIR PbS/CdS QDs achieved via cation exchange approach varying the core size and shell thickness through refined reaction parameters such as time, temperature, precursor molar ratio, etc. as‐synthesized with yield (QY) excellent chemical/photostability exhibit large...
Abstract Luminescent solar concentrators (LSCs) are able to efficiently harvest energy through large‐area photovoltaic windows, where fluorophores delicately embedded. Among various types of fluorophores, all‐inorganic perovskite nanocrystals (NCs) emerging candidates as absorbers/emitters in LSCs due their size/composition/dimensionality tunable optical properties and high photoluminescence quantum yield (PL QY). However, the large overlap between absorption emission spectra, it is still...
Abstract Semiconductor nanocrystals, the so‐called quantum dots (QDs), exhibit versatile optical and electrical properties. However, QDs possess high density of surface defects/traps due to surface‐to‐volume ratio, which act as nonradiative carrier recombination centers within QDs, thereby deteriorating overall solar cell performance. The passivation through growth an outer shell different materials/compositions called “core/shell QDs” has proven be effective approach reduce defects...
Large scale solar-driven hydrogen production is a crucial step toward decarbonizing society. However, the solar-to-hydrogen (STH) conversion efficiency, long-term stability, and cost-effectiveness in evolution reaction (HER) still need to be improved. Herein, an efficient approach demonstrated produce low-dimensional Pt/graphene-carbon nanofibers (CNFs)-based heterostructures for bias-free, highly efficient, durable HER. Carbon dots are used as building blocks situ formation of graphene...
Luminescent solar concentrators (LSCs) are able to collect sunlight from a large-area generate electric power with low cost, showing great potential in building-integrated photovoltaics. However, the efficiency of LSCs caused by reabsorption losses is critical issue that hampers their practical applications. In this work, we synthesized novel yellow emissive carbon dots (CDs) large Stokes shift 193 nm, which exhibit nearly zero reabsorption. The quantum yield (QY) emitting CDs up 61%. can be...
Carbon quantum dots (C-dots) showed excellent structure-tunable optical properties, mainly composed of carbon, nitrogen and oxygen. They have been used for various types solid-state devices. Due to the photoluminescence quenching caused by aggregation, it is a challenge produce high yield large Stokes shift C-dots via controllable simple approaches. In this work, we demonstrated microwave assisted heating approach high-quality production with ten grams scale per batch in less than 4 min. The...
Colloidal carbon dots (C-dots) have attracted a great deal of attention for their unique optical properties. However, it is still challenge to obtain highly purified C-dots without using multiple-step purification or postsize selection. In this work, self-precipitation hydrothermal reaction was used synthesize red-emitting (R-C-dots) o-phenylenediamine (o-PDA) as precursor any catalyst. The R-C-dots are able precipitate on the wall reactor, which enables us solid-state with high purity....
Abstract Colloidal carbon dots (C‐dots) are considered as promising heavy‐metal‐free materials to achieve room‐temperature phosphorescence (RTP) properties for applications, such photoelectronic devices, information encryption, and bio‐imaging. However, most of the current obtained RTP C‐dots have a short lifetime with relatively low quantum yield (QY). In this work, large‐scale synthesized via vacuum heating approach multiple emissions (blue, green, yellow), long high 1.92 s, QY 34.4% by...
Carbon dots (C-dots) have excellent optical properties and serve as building blocks for various potential applications. However, the origin of double emission in C-dots is still unclear. It highly desirable to understand deeply exciton dynamics double-emission on picosecond time scale. Herein, first time, boron-doped carbon (B–C-dots) are synthesized with a quantum yield high 41.1%. The B–C-dots an excitation-dependent photoluminescent spectrum. Compared one dominant energy state undoped...
A two-step cation exchange procedure has been developed for synthesizing PbS/CdS core/shell quantum dots (QDs) with a much thicker shell than previously reported, which expands the flexibility of current approach. The thick-shell QDs allow relatively easy observation morphology by transmission electron microscopy as well exhibiting characteristic absorption and emission CdS when thickness reaches 1.8 nm. X-ray diffraction patterns show gradual transformation from rock salt PbS pattern to...
A newly designed photoactive nanohybrid structure based on the combination of near-infrared PbS quantum dots (QDs) as light harvester and one-dimensional TiO2 nanobelts (NBs) to guide flow photogenerated charge carriers is reported. Efficient electron transfer from photoexcited QDs NBs has been demonstrated occur in developed PbS-QD/TiO2-NB nanohybrids, charge-transfer property can be tuned through size quantization effect QDs. Moreover, use instead NPs permits a larger critical capable...
Luminescent solar concentrators (LSCs) can potentially reduce the cost of cells by decreasing photoactive area device and boosting photoconversion efficiency (PCE). This study demonstrates application "giant" CdSe/CdxPb1–xS core/shell quantum dots (QDs) as light harvesters in high performance LSCs with over 1.15% PCE. Pb addition is critical to maximize First, this synthesizes QDs yield (40%), narrow size distribution (<10%), stable photoluminescence a wide temperature range (100–300 K)....
Abstract “Giant” core/shell quantum dots (g‐QDs) are a promising class of materials for future optoelectronic technologies due to their superior chemical‐ and photostability compared bare QDs core/thin shell QDs. However, inadequate light absorption in the visible near‐infrared (NIR) region frequent use toxic heavy metals (e.g., Cd Pb) still major challenges most g‐QDs CdSe/CdS) synthesized date. The synthesis NIR, metal‐free, Zn‐treated spherical CuInSe 2 /CuInS is reported using sequential...
Colloidal quantum dots (QDs) are widely studied due to their promising optoelectronic properties. This study explores the application of specially designed and synthesized “giant” core/shell CdSe/(CdS) x QDs with variable CdS shell thickness, while keeping core size at 1.65 nm, as a highly efficient stable light harvester for QD sensitized solar cells (QDSCs). The comparative demonstrates that photovoltaic performance QDSCs can be significantly enhanced by optimizing thickness. highest...