A5033125365- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Semiconductor materials and interfaces
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Thin-Film Transistor Technologies
- Transition Metal Oxide Nanomaterials
- Copper-based nanomaterials and applications
- Phytoestrogen effects and research
- Microwave Dielectric Ceramics Synthesis
- Semiconductor materials and devices
- Nutritional Studies and Diet
- Gas Sensing Nanomaterials and Sensors
- Multiferroics and related materials
- Fatty Acid Research and Health
- solar cell performance optimization
- Ferroelectric and Piezoelectric Materials
- Technostress in Professional Settings
- Organic and Molecular Conductors Research
Sichuan University
2016-2025
Materials Science & Engineering
2017-2020
Chengdu University
2017-2020
People's Liberation Army 401 Hospital
2020
Chinese People's Liberation Army
2020
Ministry of Education of the People's Republic of China
2020
We summarize the progress in organic–inorganic hybrid and all-inorganic wide- E g perovskite solar cells. Key challenges effective strategies are discussed, followed by applications tandems. outline perspectives to design superior devices.
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...
Green antisolvent diethyl carbonate retards the kinetics of solvent–antisolvent interactions, enabling a gradient distribution p-type self-doping perovskite absorber to achieve 14.2%-efficiency Sn-based solar cells.
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....
Self-assembled monolayers (SAMs) have displayed unpredictable potential in efficient perovskite solar cells (PSCs). Yet most of SAMs are largely suitable for pure Pb-based devices, precisely developing promising hole-selective contacts (HSCs) Sn-based PSCs and exploring the underlying general mechanism fundamentally desired. Here, based on prototypical donor-acceptor SAM MPA-BT-BA (BT), oligoether side chains with different length (i.e., methoxy, 2-methoxyethoxy, 2-(2-methoxyethoxy)ethoxy...
Abstract Halide substitution in phenethylammonium spacer cations (X‐PEA + , X = F, Cl, Br) is a facile strategy to improve the performance of PEA based perovskite solar cells (PSCs). However, power conversion efficiency (PCE) X‐PEA quasi‐2D (Q‐2D) PSCs still unsatisfactory and underlying mechanisms are debate. Here, in‐depth study on impact halide crystal orientation multi‐phase distribution films reported. The eliminates n 1 2D thus leads perpendicular orientation. Furthermore, nucleation...
Sn-based perovskite FASnI 3 suffers more severe degradation under light/O 2 than only O exposure, which is caused by the large amount of superoxide formation at numerous iodine vacancies through reaction between and photoexcited electrons.
Abstract The narrow bandgap (≈1.2 eV) Pb‐Sn alloyed perovskite solar cell is a promising bottom component for all‐perovskite tandem devices that are expected to offer higher efficiency than the theoretical Shockley–Queisser limit of single‐junction cells. density functional theory (DFT) study reveals film with (100) orientation would render significantly reduced trap density, which critical figure‐of‐merit device performance. Alkyl diamine therefore designed first anchor onto surface as...
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 Wide‐bandgap (WBG) perovskite solar cell (PSC) plays a pivotal role as the top subcell in all‐perovskite tandem cells (TSCs), facilitating absorption of high‐energy photons and affording large open‐circuit voltage ( V OC ). Nonetheless, stability efficiency WBG PSCs are constrained by light‐induced halide segregation non‐radiative recombination losses. In this study, work presents an approach utilizing 2‐methylpiperazinium bromide (2‐MePBr) via interfacial engineering to realize...
The methylammonium lead halide perovskite solar cells have become very attractive because they can be prepared with low-cost solution-processable technology and their power conversion efficiency been increasing from 3.9% to 20% in recent years. However, the high performance of photovoltaic devices are dependent on complicated process prepare compact films large grain size. Herein, a new method is developed achieve excellent CH3NH3PbI3–xClx film fine morphology crystallization based one step...
Abstract Although A‐site codoping of alkali metal and rare‐earth elements are known to effectively promote the d 33 CaBi 2 Nb O 9 ( CBN ), its thermal depoling behavior cannot be well promised. In this work, piezoelectricity was promoted by (NaCe) modification, instability caused lattice evolution from orthorhombic structure pseudo‐tetragonal during process. vacancies could induce distortion in Ca 0.92 (Na 0.5 Ce ) 0.08 Bi ceramic, which obviously enhanced stability reducing rotation Nb–O...
Tin (Sn)-based perovskite solar cells (PSCs) have attracted extensive attention due to the irlow toxicity and excellent optoelectric properties. Nonetheless, development of Sn-based PSCs is still hampered by poor film quality fast crystallization oxidation from Sn2+ Sn4+. In this work, we compare employ three ethylammonium halides, EAX (X = Cl, Br, I) explore their roles in perovskites cells. We find that crystallinity orientation are optimized with regulation EAI. EABr leads reduced defect...
Abstract Tin (Sn)‐based perovskites have emerged as promising alternatives to lead (Pb)‐based in thin‐film photovoltaics due their comparable properties and reduced toxicity. Strains can be tailored modulate optoelectronic properties, but mechanisms for the effects of strains on Sn‐based perovskite films devices are unrevealed corresponding strain engineering is unexplored. Herein, a strategy developed through incorporating 4‐fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into...
Abstract Strain effects in polycrystalline perovskite films significantly impact the performance of solar cells (PSCs). For environmental‐friendly tin (Sn)‐based perovskites, relationship between their ultra‐fast crystallization and intrinsic strain remains unclear, engineering targeted for Sn‐based perovskites is lacking. Herein, based on situ photoluminescence ultraviolet‐visible absorption spectroscopies, how various stages affect compressive surface morphology investigated. Two are...