A5100716550- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Metal and Thin Film Mechanics
- Grouting, Rheology, and Soil Mechanics
- Diamond and Carbon-based Materials Research
- Organic Light-Emitting Diodes Research
- Luminescence Properties of Advanced Materials
- Luminescence and Fluorescent Materials
- Strong Light-Matter Interactions
- Semiconductor Lasers and Optical Devices
- Soil and Unsaturated Flow
- Organic Electronics and Photovoltaics
- Magnetic properties of thin films
- Photopolymerization techniques and applications
- Nanocluster Synthesis and Applications
- MXene and MAX Phase Materials
- Geomechanics and Mining Engineering
- Silicon Nanostructures and Photoluminescence
- Nonlinear Optical Materials Studies
- Covalent Organic Framework Applications
- Lubricants and Their Additives
Chinese Academy of Sciences
2022-2025
Dalian Institute of Chemical Physics
2022-2025
Collaborative Innovation Center of Chemistry for Energy Materials
2022-2025
South China University of Technology
2018-2024
University of Chinese Academy of Sciences
2024
China State Construction Engineering (China)
2024
Collaborative Innovation Center of Advanced Microstructures
2022
Nanjing University
2002-2022
Los Alamos National Laboratory
2019-2022
Kunming University
2021
The enhancement of power conversion efficiency (PCE) and the development toxic Cd-, Pb-free quantum dots (QDs) are critical for prosperity QD-based solar cells. It is known that properties (such as light harvesting range, band gap alignment, density trap state defects, etc.) QD harvesters play a crucial effect on photovoltaic performance based Herein, high quality ∼4 nm Zn–Cu–In–Se alloyed QDs with an absorption onset extending to ∼1000 were developed effective construct dot sensitized cells...
The exploration of catalyst materials for counter electrodes (CEs) in quantum dot sensitized solar cells (QDSCs) that have both high electrocatalytic activity and low charge transfer resistance is always significant yet challenging. In this work, we report the incorporation nitrogen heteroatoms into carbon lattices leading to nitrogen-doped mesoporous (N-MC) with superior catalytic when used as CEs Zn-Cu-In-Se QDSCs. A series N-MC different contents were synthesized by a colloidal silica...
The improvement of sunlight utilization is a fundamental approach for the construction high-efficiency quantum-dot-based solar cells (QDSCs). To boost light harvesting, cosensitized photoanodes are fabricated in this work by sequential deposition presynthesized Zn-Cu-In-Se (ZCISe) and CdSe quantum dots (QDs) on mesoporous TiO2 films via control interactions between QDs using 3-mercaptopropionic acid bifunctional linkers. By synergistic effect ZCISe-alloyed with wide absorption range high...
Passivating the defective surface of perovskite films is becoming a particularly effective approach to further boost efficiency and stability their solar cells. Organic ammonium halide salts are extensively utilized as passivation agents in form corresponding 2D perovskites construct 2D/3D bilayer architecture for superior device performance; however, this partly suffers from postannealing-induced destructiveness 3D bulk charge transport barrier induced by quantum confinement existing...
Perovskite materials are regarded as promising photocatalysts for light harvesting, yet they exhibit low photocatalytic activity due to serious charge recombination and lack of efficient catalytic sites toward CO2 reduction. Previous studies have employed perovskites reductive sides in a Z-scheme heterojunction suppress recombination, which however still encounter selectivity because the absence specific In this work, we report strategy that enables CsPbBr3 perovskite methanation. The...
Benefiting from the suppressed charge recombination occurring at photoanode/electrolyte interfaces with introduction of TEOS additive in polysulfide electrolyte, a remarkable PCE over 12% was obtained for ZCISe QDSCs.
I–III–VI2 group "green" quantum dots (QDs) are attracting increasing attention in photoelectronic conversion applications. Herein, on the basis of "simultaneous nucleation and growth" approach, Cu–In–Ga–Se (CIGSe) QDs with light harvesting range about 1000 nm were synthesized used as sensitizer to construct dot sensitized solar cells (QDSCs). Inductively coupled plasma atomic emission spectrometry (ICP-AES), wild-angle X-ray diffraction (XRD), photoelectron spectroscopy (XPS) analyses...
Dual-functional black phosphorus quantum dot electron selective layer was designed for plastic perovskite solar cells. The efficient extraction and improved film quality contributed to the reasonably high efficiency.
Copper deficient non-stoichiometric Zn–Cu–In–Se QDs were developed to improve the performance of QDSCs.
Organic–inorganic hybrid halide perovskite materials have attracted enormous interest in recent years due to their excellent photovoltaic properties, which are strongly limited by instability. Solar cells based on the inorganic been developed rapidly and exhibit stability. The crystalline quality composition of layer play key role efficiency solar cells. Among various film deposition techniques, pulsed laser has distinctive advantages preparation thin films high close duplication targets. In...
Designing efficient photocatalysts is vital for the photoreduction of CO2 to produce solar fuels, helping alleviate issues fossil fuel depletion and global warming. In this work, a novel ZnCr-LDH/Ti3C2Tx Schottky junction successfully synthesized using an in situ coprecipitation method. ZnCr-LDH nanoflakes collectively grow on surface Ti3C2Tx MXene nanosheets. When as cocatalyst prepared heterojunction, light absorption intensity, photo-induced electron separation migration efficiency...
CuInSe2–xSx (CISeS) quantum dots (QDs) are promising materials for implementing luminescent solar concentrators (LSCs). Their benefits include near-infrared (NIR) absorption onset, efficient NIR photoluminescence (PL), and low reabsorption losses stemming from the intragap character of their emission. To streamline optimization CISeS QDs LSC applications, we develop an analytical model which allows us to relate absorptance-optimized external efficiency (EQE) QD PL yield (QY) "effective...
Laser diodes based on solution-processable materials can benefit numerous technologies including integrated electronics and photonics, telecommunications, medical diagnostics. An attractive system for implementing these devices is colloidal semiconductor quantum dots (QDs). The progress towards a QD laser diode has been hampered by rapid nonradiative Auger decay of optical-gain-active multicarrier states, fast device degradation at high current densities required action, unfavorable...
A novel gel electrolyte based on a superabsorbent polyelectrolyte, sodium polyacrylate (PAAS), was developed to construct quasi-solid-state QDSCs, achieving similar PCE liquid-junction QDSCs but better stability.
Alloyed structures of quantum dot light-harvesting materials favor the suppression unwanted charge recombination as well acceleration extraction and therefore improvement photovoltaic performance resulting solar cell devices. Herein, advantages Zn-Cu-In-S (ZCIS) alloy QD serving sensitizer in construction dot-sensitized cells (QDSCs) were compared with core/shell structured CIS/ZnS, pristine CIS QDs. The built QDSCs alloyed QDs photosensitizer achieved an average power conversion efficiency...
Poly(vinyl pyrrolidone) (PVP) was used as a superior and general additive to modify the traditional polysulfide electrolyte in quantum dot sensitized solar cells photovoltaic performance of constructed significantly improved benefiting from reduced charge recombination.
A highly conductive gel electrolyte based on sodium carboxymethylcellulose was developed to construct quasi-solid-state quantum dot sensitized solar cells that exhibit power conversion efficiency over 9% and a significant improvement in stability compared liquid-junction QDSCs.
The parasitic charge recombination processes between TiO<sub>2</sub>/QDs/electrolyte interfaces were effectively suppressed with the addition of polyethylene glycol (PEG) additive in polysulfide electrolyte, giving enhancement PCE from 5.80% to 6.74% corresponding cell devices.
Present-day liquid-state lasers are based on organic dyes. Here we demonstrate an alternative class of liquid that use solutions colloidal quantum dots (QDs). Previous efforts to realize such devices have been hampered by the fast non-radiative Auger recombination multicarrier states required for optical gain. overcome this challenge using type-(I + II) QDs, which feature a trion-like gain state with strongly suppressed recombination. When combined Littrow cavity, static (non-circulated)...
Abstract Metal corrosion has hindered the advancement of new technologies. The surfactant as one kind inhibitor can effectively restrain metal in corrosive medium. In this research, two cationic Gemini surfactants, 3,3′‐(ethane‐1,2‐diyl)bis(1‐octyl‐1 H ‐imidazol‐3‐ium) dibromide ([C 8 im‐2‐C im]Br 2 ) and 3,3′‐(butane‐1,4‐diyl)bis(1‐octyl‐1 im‐4‐C ), have been prepared for inhibition carbon steels 1.0 mol/L HCl solution. weight loss measurement demonstrates that inhibitors both achieve high...
Prolonging exciton lifetime in colloidal quantum dots (QDs) is crucial to their photochemical applications. Previously, this was achieved through a mechanism called thermally activated delayed photoluminescence (TADPL) for QDs surface-anchored with molecular triplet energy acceptors, which the triplets sensitized by can repopulate QD-excitons reverse transfer. Here, we demonstrate novel TADPL engineering surface trap states of QDs. Rapid trapping and slow detrapping prolong low-toxicity...