A5101755909- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Nanowire Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Conducting polymers and applications
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Semiconductor materials and interfaces
- Electrochemical Analysis and Applications
- Acupuncture Treatment Research Studies
- Semiconductor Quantum Structures and Devices
- Nanocluster Synthesis and Applications
- Advanced Semiconductor Detectors and Materials
- Hydrogels: synthesis, properties, applications
- Photorefractive and Nonlinear Optics
- Advanced Mathematical Theories
- Surgical Sutures and Adhesives
- solar cell performance optimization
- Anesthesia and Pain Management
- Aerosol Filtration and Electrostatic Precipitation
Civil Aviation Flight University of China
2024
Northeastern University
2024
The University of Tokyo
2014-2023
Affiliated Hospital of Jining Medical University
2023
Lanzhou University of Technology
2021-2023
Tokyo University of the Arts
2022
North University of China
2020-2022
State Council of the People's Republic of China
2021
Tokyo University of Information Sciences
2021
Japan Aerospace Exploration Agency
2021
Potassium-doped organometal halide perovskite solar cells (PSCs) of more than 20% power conversion efficiency (PCE) without I-V hysteresis were constructed. The crystal lattice the was expanded with increasing potassium ratio, where both absorption and photoluminescence spectra shifted to longer wavelength, suggesting that optical band gap decreased. In case 5% K+, conduction minimum (CBM) became similar CBM level TiO2-Li. this situation, electron transfer barrier at interface between...
The electrochemical incineration of organic pollutants on a boron-doped diamond (BDD) thin film electrode was examined by bulk electrolysis, and the mechanism oxidation investigated. A comparative study with other electrodes such as Pt glassy carbon (GC) revealed superiority BDD over these electrodes. extent degradation phenol formate due to direct hydroxyl radical-mediated were quantified amperometric measurements. found decrease increasing potentials competing reactions. for be higher than...
The improvement of solar cell performance in the near-infrared (near-IR) region is an important challenge to increase power conversion efficiency under one-sun illumination. PbS quantum-dot (QD)-based heterojunction cells with high near-IR were constructed by combining ZnO nanowire arrays QDs, which give a first exciton absorption band centering at wavelengths longer than 1 μm. morphology was systematically investigated achieve light-harvesting as well efficient carrier collection. QD/ZnO...
For improvement of solar cell performance, it is important to make efficient use near-infrared light, which accounts for ∼40% sunlight energy. Here we introduce plasmonic Ag nanocubes (NCs) colloidal PbS quantum dot/ZnO nanowire (PbS QD/ZnO NW) bulk-heterojunction cells, are characterized by high photocurrents, further in the photocurrent and power conversion efficiency (PCE) visible regions. The NCs exhibit strong far field scattering intense optical near wavelength region where light...
Abstract Almost all surfaces sensitive to the ambient environment are covered by water, whereas impacts of water on surface-dominated colloidal quantum dot (CQD) semiconductor electronics have rarely been explored. Here, strongly hydrogen-bonded hydroxylated lead sulfide (PbS) CQD is identified. The could pilot thermally induced evolution surface chemical environment, which significantly influences nanostructures, carrier dynamics, and trap behaviors in solar cells. aggravation hydroxylation...
The efficiency of tin perovskite solar cells (TPSCs) decreases largely with increased cell area because the inhomogeneity films formed by a one-step deposition method. Here, we apply two-step method that is rarely used in TPSCs to solve this problem. We study steric hindrance four different solvent molecules second step on crystallization process perovskites and find hydroxyl contributes dense homogeneous films. In comparison fabrication deposition, fabricated exhibit higher uniformity both...
AgBiS2 nanocrystals (NCs) are nontoxic, lead-free, and near-infrared absorbing materials. Eco-friendly solar cells were constructed using interdigitated layers of ZnO nanowires (NWs) NCs, with the aim elongating otherwise short carrier diffusion length NC assembly. NCs uniformly infiltrated into NW a low-cost easily scalable dip coating method. The resulting NW/AgBiS2 structures provided efficient pathways in nanowire (NWSCs), composed transparent electrode/ZnO layer/P3HT hole transport...
Nanostructured solar cells are a promising area of research for the production low cost devices that may eventually be capable complementing or even replacing present technologies in field power generation. The use quantum dots (QDs) has evolved from being simple absorbers dye-sensitized to sustaining double functions and carrier transporters full solid state devices. In this work, we both optical electrical measurements explore diffusion limitations transport made heterostructure combining...
A systematic investigation into the performance of PbS quantum dot (QD)/ZnO nanowire (NW) solar cells in near-infrared (NIR) and short-wave infrared (SWIR) regions was carried out. The were confirmed to convert a wide range energy (3.54–0.62 eV, corresponding 0.35–2.0 μm). We found that working SWIR region had high open-circuit voltage (Voc). relatively Voc 0.25 V achieved even whose photocurrent onsets at approximately 0.64 eV (1.9 μm); this is as Ge cells, which have been used for III–V...
PbS colloidal quantum dots (CQDs) are promising building block for developing the next-generation high-performance near-infrared (NIR) photodetector. However, due to surface ligand isolation and defects, CQDs usually suffer from low carrier mobility, which limits further optimization of CQDs-based optoelectronic devices. Here, combination CQD photodiode carbon nanotube (CNT) film field-effect transistor (FET) achieves a transistorized NIR photodetector with photosensitive gate. The...
Lead chalcogenides colloidal quantum dot (PbS CQD) solar cells employing an ordered bulk heterojunction (OBHJ) structure allow sufficient utilization of energy and at the same time ensure efficient charge extractions. However, interfacial deficiency was determined to be a significant limiting factor for further improvement efficiency. Herein, finely interpenetrating OBHJ between zinc oxide nanowire (ZnO NW) arrays PbS CQDs achieved by simultaneously controlling growth orientation ZnO NWs...
We have constructed heterojunction iodide ligand PbS quantum dot (QD) and ZnO nanowire (NW) solar cells. In these interdigitated structures, QDs are well-embedded within NWs grown on a dense layer. A Au back contact is directly formed the QD surface widely studied colloidal QD-based cells, active layer sandwiched between hole-blocking (or electron-accepting layer) electron-blocking (EBL) hole-transport layer). contrast, our cells contain no EBL except an additional thin capping layer, which...
Colloidal quantum dot solar cells (CQDSCs) are good candidates for low-cost power generators, due to their wide light-response range, high theoretical efficiency, and solution processability. Nevertheless, the generally used metal oxide electron transport layer (MOETL) induced various problems, blocking performance enhancement of CQDSCs, such as band alignment mismatch, high-energy photon loss, photoinduced interfacial degradation. In work described herein, we constructed high-efficiency...
Eco-friendly solar cells were fabricated using interdigitated layers comprising ZnO nanowires (NWs) and infrared absorbing AgBiS2 nanocrystals (ITO/ZnO NWs/AgBiS2/P3HT/Au). The quality of NWs was studied photoluminescence Raman spectroscopy to identify the defects in influencing cell performance. Oxygen vacancies Zn interstitial sites, among various recombination observed be main sites for carrier recombination, which hinders collection cells. Accordingly, power conversion efficiency...
Abstract Herein, we studied the effect of surface treatment compact TiO 2 layer by vacuum ultraviolet (VUV) light and TiCl 4 on I – V hysteresis perovskite solar cells prepared fluorine‐doped tin oxide (FTO) substrates with two different roughnesses. Initially, flat FTO show better results than rough FTO, slightly higher power conversion efficiency (PCE) less in curves. Treatment has no because contact between /CH 3 NH PbI layers. a positive PCE stability.
PbS colloidal quantum dot (CQD)‐based depleted bulk‐heterojunction solar cells were constructed, using the 1.2 μm thick nanowire array infiltrated with QDs bearing Br ligands. The long‐term stability tests performed on without encapsulation in air under continuous light soaking a Xe lamp an AM1.5G filter (100 mW cm −2 ). Time course of cell performances during showed two time periods distinct behavior, that is, initial transient period and relatively stable region following it. power...
We constructed an infrared PbS colloidal quantum dot (QD)/ZnO nanowire (NW) solar cell to develop a solution-processed bottom for multijunction cells. QD/ZnO NW interdigitated structures comprising 1 μm long ZnO NWs enable the construction of spatially separated carrier pathways and thick QD layers high light harvesting. Additionally, optical management plays essential role in harvesting process. Using transparent conductive oxides as window wide-band-gap electron blocking layer (EBL),...
This study present a general approach for the preparation of Ag-Grapheme nanocomposites in water- ethylene glycol system using graphene oxide as precursor and Ag building blocks. The metal nanoparticles are adsorbed on sheets play pivotal role catalytic reduction with glycol, leading to formation nanocomposites. morphology structure obtained material examined by XRD, SEM, TEM FT-IR. size particles influenced concentration AgNO3 solution. Because existence particles, well separated film via...