A5018333966- Extraction and Separation Processes
- Perovskite Materials and Applications
- Advancements in Battery Materials
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Radioactive element chemistry and processing
- Advanced Polymer Synthesis and Characterization
- Recycling and Waste Management Techniques
- Chemical Synthesis and Characterization
- Solid-state spectroscopy and crystallography
- biodegradable polymer synthesis and properties
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Liquid Crystal Research Advancements
- Polyoxometalates: Synthesis and Applications
- Graphene research and applications
- Layered Double Hydroxides Synthesis and Applications
- MXene and MAX Phase Materials
- Organic Light-Emitting Diodes Research
- Advanced Battery Materials and Technologies
- GaN-based semiconductor devices and materials
- Advanced Nanomaterials in Catalysis
- Synthetic Organic Chemistry Methods
- Flame retardant materials and properties
Chinese Academy of Sciences
2015-2025
Fuzhou University
2025
Hokkaido University
2024
Xinjiang Institute of Ecology and Geography
2015-2023
University of Electronic Science and Technology of China
2018-2022
Beijing National Laboratory for Molecular Sciences
2015-2021
Peking University
2010-2021
University of Chinese Academy of Sciences
2021
Ministry of Education
2020
Northwest University
2018-2020
The fundamental properties and ultimate performance limits of organolead trihalide MAPbX3 (MA = CH3NH3(+); X Br(-) or I(-)) perovskites remain obscured by extensive disorder in polycrystalline films. We report an antisolvent vapor-assisted crystallization approach that enables us to create sizable crack-free single crystals with volumes exceeding 100 cubic millimeters. These large enabled a detailed characterization their optical charge transport characteristics. observed exceptionally low...
We report two new heteroleptic polypyridyl ruthenium complexes, coded C101 and C102, with high molar extinction coefficients by extending the pi-conjugation of spectator ligands, a motivation to enhance optical absorptivity mesoporous titania film charge collection yield in dye-sensitized solar cell. On basis this sensitizer, several DSC benchmarks measured under air mass 1.5 global sunlight have been reached. Along an acetonitrile-based electrolyte, sensitizer has already achieved...
We employed a binary spacer of orderly conjugated 3,4-ethyldioxythiophene and thienothiophene to construct wide-spectral response organic chromophore for dye-sensitized solar cells, exhibiting high power conversion efficiency 9.8% measured under irradiation 100 mW cm(-2) air mass 1.5 global (AM1.5G) sunlight an excellent stability.
We conjugated 2-(hexylthio)thiophene with bipyridine to construct a new heteroleptic polypyridyl ruthenium sensitizer exhibiting charge-transfer band at 550 nm molar extinction coefficient of 18.7 × 103 M−1 cm−1. In contrast its analogues Z907 and C101, mesoporous titania film stained this featured short light absorption length, allowing for the use thin photoactive layer efficient light-harvesting conversion solar energy electricity. With preliminary testing, we have reached 11.4% overall...
A heteroleptic polypyridyl ruthenium complex, cis-Ru(4,4′-bis(5-octylthieno[3,2-b]thiophen-2-yl)-2,2′-bipyridine)(4,4′-dicarboxyl-2,2′-bipyridine)(NCS)2, with a high molar extinction coefficient of 20.5 × 103 M−1 cm−1 at 553 nm has been synthesized and demonstrated as highly efficient sensitizer for dye-sensitized solar cell, giving power conversion efficiency 10.53% measured under an irradiation air mass 1.5 global (AM 1.5G) full sunlight.
High-quality perovskite monocrystalline films are successfully grown through cavitation-triggered asymmetric crystallization. These enable a simple cell structure, ITO/CH3NH3PbBr3/Au, with near 100% internal quantum efficiency, promising power conversion efficiencies (PCEs) >5%, and superior stability for prototype cells. Furthermore, the devices using hole-transporter-free structure yield PCEs ≈6.5%, highest among other similar-structured CH3NH3PbBr3 solar cells to date. As service our...
Organometallic trihalide perovskites are solution-processed semiconductors that have made great strides in third-generation thin film light-harvesting and light-emitting optoelectronic devices. Recently, it has been demonstrated large, high-purity single crystals of these can be synthesized from the solution phase. These crystals' large dimensions, clean bandgap, solid-state order provided us with a suitable medium to observe quantify two-photon absorption perovskites. When CH3NH3PbBr3...
The sustainable production of chemically recyclable polymers presents a significant opportunity to polymer scientists tackle the growing environmental and energy problems current petroleum-based plastics. Despite recent advances, however, there are still pressing needs for an expanded horizon polymers. Herein, we introduce new paradigm biosourced polythioesters (PTEs) with high polymerizability complete recyclability under mild economical conditions. thiolactone monomers ring strain can be...
The density of trap states within the bandgap methylammonium lead iodide single crystals is investigated. Defect close to both conduction and valence bands are probed. Additionally, a comprehensive electronic characterization carried out, including measurements electron hole mobility, energy landscape (band diagram) at surface.
We employed the bisthienothiophene conjugated linker along with a hydrophobic triphenylamine electron-donor and hydrophilic cyanoacrylic acid electron-acceptor to construct high molar extinction coefficient organic photosensitizer, exhibiting power conversion efficiency of 8.0% measured under irradiation air mass 1.5 global (AM 1.5G) full sunlight.
Six organic dyes with different conjugated linkers such as furan, bifuran, thiophene, bithiophene, selenophene, and biselenophene have been prepared in combination the dihexyloxy-substituted triphenylamine donor cyanoacrylic acid acceptor. In conjunction an acetonitrile-based electrolyte a solvent-free ionic liquid electrolyte, these exhibit 6.88−7.77% 6.39−7.00% efficiencies, respectively. We demonstrated that furan selenophene can be employed building blocks of sensitizers stable solar...
We report a high molar extinction coefficient heteroleptic polypyridyl ruthenium sensitizer, featuring an electron-rich 3,4-ethylenedioxythiophene unit in its ancillary ligand. A nanocrystalline titania film stained with this sensitizer shows improved optical absorption, which is highly desirable for practical dye-sensitized solar cells thin photoactive layer, facilitating the efficient charge collection. In conjunction low-volatility and solvent-free electrolytes, we achieved 9.6−10.0%...
A series of organic D-π-A sensitizers composed different triarylamine donors in conjugation with the thienothiophene unit and cyanoacrylic acid as an acceptor has been synthesized at a moderate yield. Through tuning number methoxy substituents on triphenylamine donor, we have gradually red-shifted absorption to enhance device efficiencies. Further molecular engineering by substitution two hexyloxy chains place groups allows fabricating solvent-free dye-sensitized solar cell power conversion...
A new metal-free organic sensitizer (see figure) for high-performance and applicable dye-sensitized solar cells is presented. In combination with a solvent-free ionic liquid electrolyte, ∼ 7% cell made this shows an excellent stability measured under thermal light-soaking dual stress. For the first time 4.8% efficiency reached all-solid-state based on dye. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not...
Exhibiting thickness-dependent change in the critical temperature (Tc) for onset of superconductivity, Mo2C has emerged as an important new member family two-dimensional atomic crystals. Controllable growth terms morphology and thickness is necessary to elucidate its intrinsic properties at 2D limit. Here we demonstrate chemical vapor deposition ultrathin crystals on liquid Cu surface where can be controlled by tuning carbon supersaturation. A unique staggered vacancy ordering discovered...
Schottky-junctions formed on hybrid perovskite CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> single crystals show significant light-induced tuning of dielectric constant and self-biased photodetection.
Cost-effective organic sensitizers will play a pivotal role in the future large-scale production and application of dye-sensitized solar cells. Here we report two new D-π-A dyes featuring electron-rich 3,4-ethylenedioxythiophene- 2,2′-bis(3,4-ethylenedioxythiophene)-conjugated linkers, showing remarkable red-shifting photocurrent action spectra compared with their thiophene bithiophene counterparts. On basis...
A study of the growth, structure determination, and electronic properties spiro-OMeTAD single crystals.
We investigated the mechanisms of radiative recombination in a CH3NH3PbBr3 hybrid perovskite material using low-temperature, power-dependent (77 K), and temperature-dependent photoluminescence (PL) measurements. Two bound-excitonic transitions related to grain size inhomogeneity were identified. Both led PL spectra broadening as result concurrent blue red shifts these excitonic peaks. The red-shifted peak dominated at high excitation true-green wavelength 553 nm for powders that are...