A5002783021- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Semiconductor materials and interfaces
- Optical Coatings and Gratings
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Surface Modification and Superhydrophobicity
- Copper-based nanomaterials and applications
- Silicon and Solar Cell Technologies
- Silicone and Siloxane Chemistry
- Ga2O3 and related materials
- Advancements in Battery Materials
- Solid-state spectroscopy and crystallography
- Advanced Battery Materials and Technologies
- Advancements in Solid Oxide Fuel Cells
- Transition Metal Oxide Nanomaterials
- Photorefractive and Nonlinear Optics
- Advanced battery technologies research
- Photoacoustic and Ultrasonic Imaging
- Luminescence Properties of Advanced Materials
- Surface Roughness and Optical Measurements
- Thin-Film Transistor Technologies
- Coral and Marine Ecosystems Studies
Forschungszentrum Jülich
2022-2025
Jinan University
2019-2023
Solar Energy Research Institute of Sun Yat-sen University
2015-2023
Sun Yat-sen University
2015-2023
Key Laboratory of Guangdong Province
2018
Central South University
2012
Abstract Quantifying recombination in halide perovskites is a crucial prerequisite to control and improve the performance of perovskite-based solar cells. While both steady-state transient photoluminescence are frequently used assess perovskite absorbers, quantitative analyses within consistent model seldom reported. We use measurements with large dynamic range more than ten orders magnitude on triple-cation films showing long-lived transients featuring continuously changing decay times that...
Self-powered photodetectors (PDs) based on inorganic metal halide perovskites are regarded as promising alternatives for the next generation of photodetectors. However, uncontrollable film growth and sluggish charge extraction at interfaces directly limit sensitivity response speed perovskite-based Herein, by assistance an atomic layer deposition (ALD) technique, CsPbBr3 perovskite thin films with preferred orientation enlarged grain size obtained predeposited interfacial modification...
Lead-halide perovskites are semiconductor materials with attractive properties for photovoltaic and other optoelectronic applications. However, determining crucial electronic material parameters, such as charge-carrier mobility lifetime, is plagued by a wide range of reported values inconsistencies caused interpreting reporting data originating from different measurement techniques. Here, we propose method the simultaneous determination lifetime using only one technique: transient...
Abstract As one of the low‐cost energy storage systems, Na‐ion batteries (NIBs) have received tremendous attention. However, performance current anode materials still cannot meet requirements NIBs. In our work, we obtain sulfur‐doped interconnected carbon microspheres (S‐CSs) via a simple hydrothermal method and subsequent sulfurizing treatment. Our S‐CSs exhibit an ultrahigh reversible capacity 520 mAh g –1 at 100 mA after 50 cycles excellent rate capability 257 , even high density 2 A ....
Interface interactions between perovskite materials and substrates are of great significance for the development high-quality materials. Herein, we have successfully prepared Cs2AgBiBr6 double-perovskite films via a one-step spin-coating process demonstrated novel approach that modifies surface with an ultrathin metal oxide (MOx) layer to promote film quality photoelectric performance. Characterization results strongly suggest improvement is attributed Bi–O interfacial interaction at...
Abstract Multispectral imaging plays an important role in many applications such as color recognition, substance distinction, and medical therapy. Although multicolor detection has been demonstrated lead‐based perovskites, the limited near‐infrared responsivity slow response impede their for identifying substance. Herein, narrow bandgap highly stable Cs 0.05 MA 0.45 FA 0.5 Sn Pb I 3 (Sn‐Pb) perovskite films with excellent crystallinity selective growth orientation are realized by synergy of...
Abstract Transient photoluminescence is a frequently used method in the field of halide perovskite photovoltaics to quantify recombination by determining characteristic decay time an exponential decay. This often considered be single value for certain film. However, there are many mechanisms that lead non‐exponential decays. Here, it shown decays lead‐halide perovskites and follow power‐law relation between PL intensity caused shallow defects. Decay times therefore vary continuously as...
The Cu(In,Ga)Se2 (CIGS) thin film has been commercialized as solar cells with great success, but its application for photodetectors still faces some practical challenges, including low detectivity and long response time. In this paper, the structure of Mo/CIGS/CdS/ZnO/ITO heterojunction fabricated, satisfactory performances high fast time have achieved by suppressing dark current enhancing carrier mobility. controllable growth CIGS grains is accomplished through optimizing selenization...
Abstract The collection of photogenerated charges in halide perovskite solar cells depends on the thickness absorber layer, with larger thicknesses leading to a reduced efficiency. This observation has traditionally been associated insufficiently high electron and hole diffusion lengths layers. However, it is shown that presence low‐mobility contact layers, charge can be thickness‐dependent, even if layer infinite mobility. Here, analytical equations are derived for dependence losses...
Abstract While the efficiencies of lab‐sized perovskite solar cells are continuously rising, a variety challenges have to be overcome realize remotely similar in an industrial context. Any changes preparation process, device size, architecture, and material type likely result efficiency loss. To date, there been no solutions that can produce large‐area modules with performance comparable laboratory devices. However, depending on deposition dominant loss mechanisms differ significantly, which...
Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) thin film is a promising material for optoelectronic devices. In this work, we fabricate Mo/CZTSSe/CdS/ZnO/ITO (ITO, indium tin oxide) heterojunction photodetectors with favorable self-powered characteristics. The photodetector exhibits exceptional high-frequency photoresponse performance whose -3 dB bandwidth and rise/decay time have reached 1 MHz 240/340 ns, respectively. For further improvement, ultrathin Al2O3 layer prepared via atomic deposition (ALD)...
In this work, wide bandgap perovskite MAPbCl 3 films were successfully synthesized by low temperature vapor phase anion exchange and applied in visible-light-insensitive defect detection.
A method is developed to extract the rise time constant from frequency domain data of perovskite solar cells, which determines charge extraction efficiency. The results show a good agreement with those obtained measurements.
Aqueous zinc-ion batteries (ZIBs) are rapidly developing, and powerful in situ monitoring methods can play a key role their evolution, particularly for gaining deeper understanding of the ion storage process cathodes. To enhance capabilities energy field, we apply an optical recording technique combined with multispectral imaging (MSI) reconstruction algorithm to study charge ZIBs based on Prussian blue analog The method reconstruct time-domain spectra (TDS) reflectance at multiple...