A5065895444- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Solar-Powered Water Purification Methods
- Nanowire Synthesis and Applications
- Magnetic and transport properties of perovskites and related materials
- Organic Electronics and Photovoltaics
- Advanced Memory and Neural Computing
- Topological Materials and Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Conducting polymers and applications
- Magnetic Properties of Alloys
- Nanopore and Nanochannel Transport Studies
- Quantum Information and Cryptography
- Ga2O3 and related materials
- Ferroelectric and Negative Capacitance Devices
- Thermal Radiation and Cooling Technologies
- GaN-based semiconductor devices and materials
- Photonic and Optical Devices
- ZnO doping and properties
- Phase-change materials and chalcogenides
- Enzyme-mediated dye degradation
- Surface Modification and Superhydrophobicity
- Multiferroics and related materials
- Energy Harvesting in Wireless Networks
Stanford University
2023
University of Electronic Science and Technology of China
2013-2023
Soochow University
2018-2022
Huzhou University
2020
National Engineering Research Center of Electromagnetic Radiation Control Materials
2013
Abstract Lead sulphide (PbS) nanocrystals (NCs) are promising materials for low-cost, high-performance optoelectronic devices. So far, PbS NCs have to be first synthesized with long-alkyl chain organic surface ligands and then ligand-exchanged shorter (two-steps) enable charge transport. However, the initial synthesis of insulated show no necessity ligand-exchange process is tedious extravagant. Herein, we developed a direct one-step, scalable synthetic method iodide capped (PbS-I) NC inks....
Direct electricity generation from water flow/evaporation, coined hydrovoltaic effect, has recently attracted intense interest as a facile approach to harvest green energy ubiquitous capillary flow or evaporation. However, the current device is inferior in output power efficiency compared other renewable devices. Slow evaporation rate and inefficient charge collection at electrodes are two fundamental drawbacks limiting efficiency. Here, we report bioinspired hierarchical porous fabric...
PbS quantum-dot (QD) solar cells are promising candidates for low-cost solution-processed photovoltaics. However, the device fabrication usually requires ten more times film deposition and rinsing steps, which is not ideal scalable manufacturing. Here, a greatly simplified processing demonstrated by replacing methanol with acetonitrile (ACN) as solvent. It discovered that ACN can effectively "cure" cracks generated from volume loss during solid-state ligand-exchange process, enables of thick...
Abstract Current efforts on lead sulfide quantum dot (PbS QD) solar cells are mostly paid to the device architecture engineering and postsynthetic surface modification, while very rare work regarding optimization of PbS synthesis is reported. Here, QDs successfully synthesized using PbO PbAc 2 · 3H O as sources. QD based PbAc‐PbS have demonstrated a high power conversion efficiency (PCE) 10.82% (and independently certificated values 10.62%), which significantly higher than PCE 9.39% for...
A multiple-passivation strategy by solution-phase ligand engineering in lead halide exchanged QDs ink is presented, which result remarkably improved colloidal stability of and enhanced device performance.
Colloidal quantum dot (CQD) solar cells processed from pre-exchanged lead sulfide (PbS) inks have received great attention in the development of scalable and stable photovoltaic devices. However, current hole-transporting material (HTM) 1,2-ethanedithiol-treated PbS (PbS-EDT) CQDs several drawbacks terms commercialization, including need for oxidation multilayer fabrication. Conjugated polymers are an alternative HTM with adjustable properties. Here we propose a series conjugated (PBDB-T,...
Abstract Implanted neural electrodes have been widely used to treat brain diseases that require high sensitivity and biocompatibility at the tissue–electrode interface. However, currently clinical cannot meet both these requirements simultaneously, which hinders effective recording of electronic signals. Herein, nanozyme‐based incorporating bioinspired atomically precise clusters are developed as a general strategy with heterogeneous design for multiscale ultrasensitive via quantum transport...
Cesium-doped ZnO nanoparticle was synthesized for application in PbS QD solar cells as an efficient electron transporting layer.
Resistive switching characteristics in Cu/ZnO/AZO (Al-doped ZnO) were investigated. Reproducible bipolar resistance properties observed the single oxide layer (SL)-based device. To improve performance, a CuO–ZnO bilayer (BL) was used to form Cu/CuO/ZnO/AZO structure. RS such as retention time, endurance, variations of threshold voltage well distribution The results demonstrated that BL devices exhibit more excellent performance than SL devices. conduction mechanisms high and low states can...
Herein, for the first time, it is successfully demonstrated that radio frequency (RF) magnetron sputtered SnO 2 can be a qualified alternative electron transport layer (ETL) high‐efficiency PbS quantum dot (QD) solar cell. The highest performing device using such ETL obtains an efficiency of 8.4%, which comparable to sol–gel ZnO‐based one (8.8%). excellent performance mainly results from improved current density, attributed superior properties ETL, as high mobility and optical transmittance....
We systematically studied the dynamics of Fermi polarons driven by time-dependent scattering length using a variational method. Starting from non-interacting initial state, we calculated evolution behavior contact, energy, and quasiparticle residue this system as $a_s(t)$ increases zero. In short-time evolution, obtained analytical results, verifying that when grows $\sqrt{t}$, contact $C(t)$ energy $E(t)$ exhibit maximum growth rate. Furthermore, numerically solved long-time is diven with...
Accelerating inorganic nanocrystal-based photovoltaic technology needs more efficient synthetic protocols for large scale manufacture, high yield and excellent quality nanocrystal materials.
Abstract The hydrovoltaic effect is a recently‐developed means to directly generate electric power from omnipresent water resources, which has drawn substantial attention in the energy harvesting and conversion domain. Unfortunately, output density significantly lags behind other generation ways. Although numerous efforts have been made develop various active materials catering improved output, yet less paid interface between electrodes. Here, an atomic layer deposition deposited titanium...
Microdisplays based on an array of micro-sized GaN-based light emitting diodes (μLEDs) are very promising for high brightness applications. As the size Micro-LED decreases, sidewall damage caused by plasma etching becomes important factor in reducing luminescence efficiency. Here, photoluminescence, scanning electron microscope (SEM) and high‑resolution transmission microscopy (HR‑TEM) were combined to reveal physical defects surface, such as plasma-induced lattice disorder, enrichment...
Recently resistive switching (RS) based on ZnO thin film has attracted considerable attention since with doping can improve the ratio and device performance. In this work, Cu/ZnO/AZO (Al-doped ZnO) Cu/ZnO:Cu (Cudoped /AZO structures were fabricated for RS, using AZO as bottom electrodes due to its lattice matching ZnO, metal Cu was deposited top electrodes. The current-voltage (I-V) characteristics of these RS devices different doped films a dielectric layer analyzed compared. results...
We present a 100GHz millimeter-wave communication enabled by photonics-assisted intensity modulation and direct detection system. The frequency-resolved discrete multi-tone (DMT) is used to adapt the nonlinear response of system increase rate transmission compared conventional pulse amplitude modulation. By loading different number bits subcarriers based on channel frequency response, 20 Gbps DMT signals transmitted over 0.25 m free space distance, measured bit error (BER) below 7% FEC...