A5053098693- Perovskite Materials and Applications
- Advancements in Battery Materials
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- Advanced Battery Materials and Technologies
- Quantum Dots Synthesis And Properties
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- solar cell performance optimization
- Photovoltaic Systems and Sustainability
- Digital Marketing and Social Media
- Silicon and Solar Cell Technologies
- Organic Light-Emitting Diodes Research
- Technology Adoption and User Behaviour
- Organic Electronics and Photovoltaics
- Cooperative Communication and Network Coding
- Advanced MIMO Systems Optimization
- MXene and MAX Phase Materials
- Consumer Behavior in Brand Consumption and Identification
- Spinal Cord Injury Research
- Advanced Battery Technologies Research
- Satellite Communication Systems
- Conducting polymers and applications
- Thermal Expansion and Ionic Conductivity
Applied Physical Sciences (United States)
2020-2024
University of North Carolina at Chapel Hill
2020-2024
Xi'an Jiaotong University
2017-2019
Hunan University
2018
State Key Laboratory of Electrical Insulation and Power Equipment
2017
China XD Group (China)
2017
Institute of Electrical Engineering
2017
An additive can remove detrimental iodine in degraded precursors, which enhances the performance and yield of perovskite devices.
The defective bottom interfaces of perovskites and hole-transport layers (HTLs) limit the performance p-i-n structure perovskite solar cells. We report that addition lead chelation molecules into HTLs can strongly interact with lead(II) ion (Pb 2+ ), resulting in a reduced amorphous region near passivated surface. minimodule an aperture area 26.9 square centimeters has power conversion efficiency (PCE) 21.8% (stabilized at 21.1%) is certified by National Renewable Energy Laboratory (NREL),...
Abstract Perovskite photovoltaics are gaining increasing common ground to partner with or compete silicon reduce cost of solar energy. However, a cost-effective waste management for toxic lead (Pb), which might determine the fate this technology, has not been developed yet. Here, we report an end-of-life material perovskite modules recycle and valuable transparent conductors protect environment create dramatic economic benefits from recycled materials. Lead is separated decommissioned by...
The light-emitting diodes (LEDs) used in indoor testing of perovskite solar cells do not expose them to the levels ultraviolet (UV) radiation that they would receive actual outdoor use. We report degradation mechanisms p-i-n-structured under unfiltered sunlight and with LEDs. Weak chemical bonding between perovskites polymer hole-transporting materials (HTMs) transparent conducting oxides (TCOs) dominate accelerated A-site cation migration, rather than direct HTMs. An aromatic phosphonic...
Abstract Interstitial iodides are the most critical type of defects in perovskite solar cells that limits efficiency and stability. They can be generated during solution, film, device processing, further accelerating degradation. Herein, we find introducing a small amount zinc salt- trifluoromethane sulfonate (Zn(OOSCF 3 ) 2 solution control iodide resultant perovskites ink films. CF SOO ̶ vigorously suppresses molecular iodine formation by reducing it to iodide. At same time, cations...
Confining smaller and fewer SnO<sub>2</sub> nanoparticles within honeycomb-like carbon nanoflakes demonstrated superior cycle stability rate capability for lithium storage.
Despite the high-efficiency and low-cost prospect for perovskite solar cells, great concerns of lead toxicity instability remain this technology. Here, we report an encapsulation strategy modules based on lead-adsorbing ionogel, which prevents leakage withstand long-term stability tests. The ionogel layers integrated both sides enhance impact resistance. self-healable can prevent water permeation into layer adsorb that might leak. encapsulated devices pass damp heat thermal cycling...
Understanding carrier recombination processes in metal halide perovskites is fundamentally important to further improving the efficiency of perovskite solar cells, yet accurate velocity at grain boundaries (GBs) has not been determined. Here, we report determination velocities GBs (SGB) polycrystalline by mapping transient photoluminescence pattern change induced nonradiative carriers GBs. Charge revealed be even stronger than surfaces unpassivated films, with average SGB reaching 2200 3300...
Perovskite–silicon tandem cells have shown much higher efficiencies than single-junction cells, which promises further reduction of energy cost from photovoltaics. Due to the protection by perovskites, silicon subcells in perovskite–silicon may last longer those devices. Herein, we report recycling bottom end-of-life solar reduces their and enhances sustainability. We demonstrate that can be recycled thermal delamination chemical cleaning processes. The optoelectronic properties were largely...
Lithium–sulfur (Li–S) batteries as among the most promising energy storage devices possess high theoretical capacity and density but suffer from polysulfide dissolution, which hinders their practical application. Herein, we present a facile synthesis of hollow carbon nanoballs (HCNBs) anchored with ultrafine TiO2 nanoparticles (TiO2@HCNBs) in HCNBs interiors graphitic crystallization accommodate volume expansion sulfur upon lithiation improve cathode conductivity, while effectively trap...
In this paper, we propose a novel inter-cell handover approach from new perspective in dense Heterogeneous and Small Cell Networks (HetSNets).We first devise cell selection mechanism to choose proper candidate small for the UEs that tend implement inter-small (ICH).By exploiting property of typical non-concentric circle, i.e., circle Apollonius, then analytical method modeling regions present mathematical derivation prove issues fit Apollonius.We design an algorithm (ICHA) by means our...
Abstract Interstitial iodides are the most important type of defects in perovskite solar cells that limits efficiency and stability. They can be generated during solution, film, device processing further accelerate degradation. Herein, we find introducing a small amount an organozinc compound- zinc trifluoromethanesulfinate (Zn(OOSCF 3 ) 2 solution control iodide resultant perovskites ink films. CF SOŌ vigorously suppresses molecular iodine formation by reducing it to iodide, while cations...
Bifacial solar modules can produce 5% to over 30% more energy than monofacial ones, which further reduce the levelized cost of electricity from photovoltaic devices. The market share bifacial silicon is rising. To compete with photovoltaics, perovskite cells also need go structure for an increased yield. In addition, are essentially semitransparent needed realize efficient perovskite-silicon 4-terminal tandem modules. However, efficiency was far below that ones. Here I will report...