A5084803375- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Gas Sensing Nanomaterials and Sensors
- Intermetallics and Advanced Alloy Properties
- Titanium Alloys Microstructure and Properties
- Supercapacitor Materials and Fabrication
- Organic Electronics and Photovoltaics
- MXene and MAX Phase Materials
- Metal and Thin Film Mechanics
- Advanced Wireless Communication Technologies
- Welding Techniques and Residual Stresses
- Infrastructure Maintenance and Monitoring
- TiO2 Photocatalysis and Solar Cells
- Structural Analysis and Optimization
- Wireless Communication Security Techniques
- Graphene research and applications
- Advanced Materials and Mechanics
- Advanced Battery Materials and Technologies
- Solid-state spectroscopy and crystallography
- Modular Robots and Swarm Intelligence
- Material Properties and Failure Mechanisms
University of North Carolina at Chapel Hill
2024-2025
Applied Physical Sciences (United States)
2024-2025
National Renewable Energy Laboratory
2024
Shaanxi University of Science and Technology
2023-2024
Fuzhou University
2023
Shenyang Institute of Computing Technology (China)
2023
Chinese Academy of Sciences
2023
Shenzhen University
2021-2022
Chang'an University
2020-2022
North China Electric Power University
2014-2021
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 Perovskite solar cells (PSCs) have witnessed astonishing improvement in power conversion efficiency (PCE), more recently, with advances long‐term stability and scalable fabrication. However, the presence of an anomalous hysteresis behavior current density–voltage characteristic these devices remains a key obstacle on road to commercialization. Herein, sol–gel‐processed mesoporous boron‐doped TiO 2 (B‐TiO ) is demonstrated as improved electron transport layer (ETL) for PSCs reduction...
The rational design of the directional charge transfer channel represents an important strategy to finely tune migration and separation in photocatalytic CO2 -to-fuel conversion. Despite progress made crafting high-performance photocatalysts, developing elegant photosystems with precisely modulated interfacial feature remains a grand challenge. Here, facile one-pot method is developed achieve situ self-assembly Pd nanocrystals (NYs) on transition metal chalcogenide (TMC) substrate aid...
A low-temperature-processed C<sub>60</sub>/ultrathin-TiO<sub>2</sub> bilayer is successfully designed as an ETL for high-performance and UV-stable perovskite solar cells (1 cm<sup>2</sup>).
The synthesis and growth of CH3NH3PbI3 films with controlled nucleation is a key issue for the high efficiency stability solar cells. Here, 4-tert-butylpyridine (tBP) was introduced into antisolvent to obtain quality perovskite layers. In situ optical microscopy X-ray diffraction patterns were used prove that tBP significantly suppressed by forming an intermediate phase. addition, gradient structure obtained this method, which greatly improved perovskites. An effective power conversion (PCE)...
Biuret was introduced to regulate the crystallization process and passivate defects of perovskite films, leading MAPbI<sub>3</sub> solar cells with efficiency over 21% enhanced thermal stability.
Control of dynamics at the electron transport layer–perovskite interface, such as charge transfer and recombination, is essential in achieving high‐efficiency planar perovskite solar cells (PSCs). Herein, it was observed that trade‐off between unfavorable a thick SnO 2 film serious recombination thin film/perovskite interfaces for performance ‐based PSCs. The optimized efficiency devices beyond 20% obtained by using two‐step deposition . Moreover, trap‐assisted carrier significantly...
Abstract Field testing, failure analysis, and understanding of degradation mechanisms are essential to advancing metal halide perovskite (MHP) photovoltaic (PV) technology toward commercialization. Here, we present performance data from up 1 year outdoor testing MHP modules in Golden, Colorado. The module encapsulation architecture encapsulant materials have a significant impact on reliability, with containing polyolefin elastomer (POE) addition desiccated polyisobutylene (PIB) edge seal...
In this article, hierarchical TiO2 microstructures (HM-TiO2) were synthesized by a simple solvothermal method adopting tetra-n-butyl titanate as the titanium source in mixed solvent composed of N,N-dimethylformamide and acetic acid. Due to high crystallinity superior light-scattering ability, resultant HM-TiO2 are advantageous photoanodes for dye-sensitized solar cells. When assembled entire photovoltaic device with C101 dye sensitizer, pure HM-TiO2-based cells showed an ultrahigh...
Abstract Formamidinium (FA) lead halide (α‐FAPbI 3 ) perovskites are promising materials for photovoltaic applications because of their excellent light harvesting capability (absorption edge 840 nm) and long carrier diffusion length. However, it is extremely difficult to prepare a pure α‐FAPbI phase its easy transformation into nondesirable δ‐FAPbI phase. In the present study, “perovskite” template (MAPbI ‐FAI‐PbI 2 ‐DMSO) structure used avoid suppress formation phases. The perovskite formed...
In this work, a simple carbazole-based hole transport material with triphenylamine moieties, termed LD22, has been used in perovskite solar cells (PSCs). It is noted that LD22 exhibits proper HOMO level of −5.27 eV, high mobility 1.65 × 10–5 cm2 V–1 s–1, and relatively glass-transition temperature 132 °C. When was PSCs, pristine LD22-based PSCs showed power conversion efficiency (PCE) 13.04%. doped, the PCE improves to promising 17.18%. More importantly, concentration little influence on PSC...
A solvent exchange strategy (SES) was used to obtain perovskite films without a dripping anti-solvent.
The performance of perovskite solar cells (PSCs) is sensitive to the quality films. Sequential deposition enabling controlled growth film promising obtain high-quality However, it challenging fabricate formamidinium-based planar PSCs via sequential deposition, mainly due small penetration depth large size formamidinium cation into a compact PbI2 during formation. Here, CaI2 introduced precursor solution, which brings two benefits. First, porous low-crystalline CaI2–PbI2 results in reduced...
Tin-based perovskites with low toxicity and a narrow band gap have been promising candidates for the fabrication of efficient lead-free perovskite solar cells (PSCs). Nevertheless, power conversion efficiency (PCE) tin-based PSCs still lags behind that their lead counterparts due to poor film quality induced by uncontrollable crystal growth Sn2+ self-doping. Herein, we introduce bifunctional additive, ammonium thiocyanate (NH4SCN), into precursor solution, which is able coordinate SnI2...