A5066710648- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Transition Metal Oxide Nanomaterials
Sichuan University
2020-2024
Abstract Low‐bandgap mixed tin–lead perovskite solar cells (PSCs) have been attracting increasing interest due to their appropriate bandgaps and promising application build efficient all‐perovskite tandem cells, an effective way break the Shockley–Queisser limit of single‐junction cells. Tin fluoride (SnF 2 ) has widely used as a basis along with various strategies improve optoelectronic properties low‐bandgap SnPb perovskites However, fully understanding roles SnF in both films devices is...
All-perovskite tandem solar cells (TSCs) hold great promise in terms of ultrahigh efficiency, low manufacturing cost, and flexibility, stepping forward to the next-generation photovoltaics. However, their further development is hampered by relatively performance low-bandgap (LBG) tin (Sn)-lead (Pb) perovskite (PSCs). Improving carrier management, including suppressing trap-assisted non-radiative recombination promoting transfer, significance enhance Sn-Pb PSCs. Herein, a management strategy...
All-perovskite tandem solar cells (TSCs) have exhibited higher efficiencies than single-junction perovskite (PSCs) but still suffer from the unsatisfactory performance of low-bandgap (LBG) tin-lead (Sn-Pb) subcells. The inherent properties PEDOT:PSS are crucial to high-performance Sn-Pb films and devices; however, underlying mechanism has not been fully explored revealed. Here, we report a facile oxalic acid treatment (OA-PEDOT:PSS) precisely regulate its work function surface morphology....
Abstract Surface post‐treatment using ammonium halides effectively reduces large open‐circuit voltage ( V OC ) losses in bromine‐rich wide‐bandgap (WBG) perovskite solar cells (PSCs). However, the underlying mechanism still remains unclear and device efficiency lags largely behind. Here, a facile strategy of precisely tailoring phase purity 2D perovskites on top 3D WBG realizing high is reported. The transient absorption spectra, cross‐sectional confocal photoluminescence mapping, Kelvin...
Abstract Among various types of perovskite‐based tandem solar cells (TSCs), all‐perovskite TSCs are particular attractiveness for building‐ and vehicle‐integrated photovoltaics, or space energy areas as they can be fabricated on flexible lightweight substrates with a very high power‐to‐weight ratio. However, the efficiency tandems is lagging far behind their rigid counterparts primarily due to challenges in developing efficient wide‐bandgap (WBG) perovskite well low open‐circuit voltage ( V...
Abstract Power conversion efficiency (PCE) of lead (Pb)‐free tin (Sn)‐based perovskite solar cells (PVSCs) is much lower than that their Pb‐based counterparts, which mainly attributed to large open‐circuit voltage ( V OC ) loss and poor fill factor (FF). In this work, a strategy via vacuum‐assisted treatment the Sn layer self‐heal defects in reported, leading suppression nonradiative recombination enhancement carrier transport capability. Using method, maximum PCE 10.3% obtained for dual...
Abstract Wide-bandgap (wide- E g , ∼1.7 eV or higher) perovskite solar cells (PSCs) have attracted extensive attention due to the great potential of fabricating high-performance perovskite-based tandem via combining with low-bandgap absorbers, which is considered promising exceed Shockley–Queisser efficiency limit. However, inverted wide- PSCs a minimized open-circuit voltage ( V oc ) loss, are more suitable prepare all-perovskite devices, still lacking study. Here, we report strategy adding...
Perovskite Solar Cells In article number 2202438, Cong Chen, Dewei Zhao, Fan Fu, and co-workers report 15.1% flexible near-infrared transparent wide-bandgap (1.77 eV) perovskite solar cells with a low open-circuit voltage–deficit of 480 mV. When paired flexible, narrow-bandgap (1.24 cells, they demonstrate 23.8% all-perovskite tandem cell superior voltage 2.1 V.