A5012914596- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Nanowire Synthesis and Applications
- Thin-Film Transistor Technologies
- Advanced battery technologies research
- Advanced Nanomaterials in Catalysis
- Multiferroics and related materials
- Electrochemical sensors and biosensors
- MXene and MAX Phase Materials
- Ferroelectric and Piezoelectric Materials
- Advancements in Battery Materials
- Ga2O3 and related materials
- Fuel Cells and Related Materials
- Solar-Powered Water Purification Methods
- Innovative Microfluidic and Catalytic Techniques Innovation
- Organic Light-Emitting Diodes Research
Henan University
2016-2025
Henan University of Technology
2024
Dongguan University of Technology
2020-2022
University of Toronto
1995-2020
Hong Kong Polytechnic University
2012-2019
National Center for Nanoscience and Technology
2019
Harbin Institute of Technology
2019
Shenzhen Polytechnic
2014-2017
Kaifeng University
2014-2015
Chinese Academy of Sciences
2008-2014
Efficient wide-bandgap perovskite solar cells (PSCs) enable high-efficiency tandem photovoltaics when combined with crystalline silicon and other low-bandgap absorbers. However, PSCs today exhibit performance far inferior to that of sub-1.6-eV bandgap due their tendency form a high density deep traps. Here, we show healing the traps in perovskites-in effect, increasing defect tolerance via cation engineering-enables further improvements PSCs. We achieve stabilized power conversion efficiency...
Impressive progress in halide perovskite solar cells motivates further work to improve operating stability. It is known that ion-migration-driven decomposition represents a degradation pathway and it can occur within the material even well-encapsulated devices. Here we find quasi-two-dimensional (2.5D) perovskites suppress this ion-migration-induced degradation. Using TOF-SIMS, confirm iodide migration occurs bulk photovoltaic devices at their maximum power point (MPP). We observe iodine...
Abstract Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the absorber charge–transport layers. Here, situ back‐contact passivation (BCP) that reduces hole transport layer (HTL) is reported. A thin of nondoped semiconducting polymer perovskite/HTL interface introduced it shown use semiconductor permits—in...
Abstract Perovskite solar cells (PSCs) have witnessed rapid development toward commercialization based on their superior efficiency except for some remained misgivings about poor stability primarily originating from interfacial problems. Robust back interface neutralization of crystal defects, depression dopant lithium ions (Li + ) diffusion, and even inhibition toxic lead (Pb) leakage is highly desirable; however, it remains a great challenge. Herein, cost‐effective therapy approach...
Modulating and optimizing the diverse parameters of photocatalysts synergistically as well exerting these advantages fully in photocatalytic reactions are crucial for sufficient utilization solar energy but still face various challenges. Herein, a novel facile urea- KOH-assisted thermal polymerization (UKATP) strategy is first developed preparation defect-modified thin-layered porous g-C3N4 (DTLP-CN), wherein thickness was dramatically decreased, cyano groups, nitrogen vacancies, mesopores...
Charge carrier events across organic electronics are ubiquitous, and the derived optimization plays a crucial effect on improving performance of electronics. Herein, two-dimensional material (Ti3C2Tx) is incorporated into titanium dioxide (TiO2) to impart Ti3C2Tx/TiO2 hybrid film enriched hydroxy group distribution, defect-negligible surface, upshifted work function, enhanced conductivity yet electron mobility versus pristine TiO2 film. Therefore, intensified photon-harvesting ability,...
Abstract Perovskite solar cells with carbon electrode have a commercial impact because of their facile scalability, low‐cost, and stability. In these devices, it remains challenge to design an efficient hole transport layer (HTL) for robust interfacing perovskite on one side another. Herein, organic/inorganic double planar HTL is constructed based polythiophene (P3HT) nickel oxide (NiOx) nanoparticles address the named challenge. Through adding alkyl ammonium bromide (CTAB) modified NiOx...
Abstract Organic solar cells (OSCs) exhibit complex charge dynamics, which are closely correlated with the dielectric constant (ɛ r ) of photovoltaic materials. In this work, a series novel conjugated copolymers based on benzo[1,2‐b:4,5‐b′]difuran (BDF) and benzotriazole (BTz) is designed synthesized, differ by nature π‐bridge from one another. The PBDF‐TF‐BTz asymmetric furan thiophene demonstrates larger ɛ 4.22 than PBDF‐dT‐BTz symmetric (3.15) PBDF‐dF‐BTz (3.90). also offers more...
Dye-sensitized solar cells (DSSCs) based on the TiO2 photoanode are promising contenders for photovoltaic technology. However, shows severe charge recombination and leads to rapid photodegradation of absorbed dyes due its photocatalytic activity. Herein, we developed a hybrid by embedding multifunctional fulleropyrrolidine (PCBO-3) into film. The film presents higher electron mobility, aligned energy level with dyes, reduced oxygen vacancy defects, synergistically contributing suppressed...
Carbon-based perovskite solar cells (PSCs) coupled with solution-processed hole transport layers (HTLs) have shown potential owing to their combination of low cost and high performance. However, the commonly used poly(3-hexylthiophene) (P3HT) semicrystalline-polymer HTL dominantly shows edge-on molecular orientation, in which alkyl side chains directly contact layer, resulting an electronically poor at perovskite/P3HT interface. The study adopts a synergetic strategy comprising additive...
Abstract Formamidinium lead iodide (FAPbI 3 ) in its α‐phase is among the most desirable perovskite compositions for solar cells. However, because of transition into yellow δ‐phase at room temperature, it a challenge to process ambient air by scalable fabrication methods. Here introduction trace amount cadmium (in form CdI 2 FAPbI reported and found that enhances stability perovskite's black polymorph, inhibits non‐radiative recombination events, leads pin‐hole free compact surface...
A low-temperature and solution-processed graphene co-doped G-P3HT/G-NiO x hole-transporting bilayer with enhanced conductivity matched cascade band alignment is designed for high-performance carbon electrode perovskite solar cells.
Dispersive SnS2 colloidal quantum dots have been synthesized via hot-injection method. Hybrid photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3",7"dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) as electron donor and crystalline acceptor studied. Photoluminescence measurement has performed to study the surfactant effect excitons splitting process. The photocurrent solar cells with hybrid depends greatly ligands exchange well device heat treatment. AFM...
Silicon nanowire (SiNW) arrays show an excellent light-trapping characteristic and high mobility for carriers. Surface plasmon resonance of silver nanoparticles (AgNPs) can be used to increase light scattering absorption in solar cells. We fabricated a new kind SiNW/organic hybrid cell by introducing AgNPs. Reflection spectra confirm the improved AgNP-decorated SiNW arrays. A double-junction tandem structure was designed manufacture our Both short-circuit current external quantum efficiency...
Abstract As crystalline silicon solar cells approach in efficiency their theoretical limit, strategies are being developed to achieve efficient infrared energy harvesting augment using photons from beyond its 1100 nm absorption edge. Herein we report a strategy that uses multi-bandgap lead sulfide colloidal quantum dot (CQD) ensembles maximize short-circuit current and open-circuit voltage simultaneously. We engineer the density of states simultaneously large quasi-Fermi level splitting...
Fused-ring electron donors boost the efficiency of organic solar cells (OSCs), but they suffer from high cost and low yield for their large synthetic complexity (SC > 30%). Herein, authors develop a series simple non-fused-ring donors, PF1 PF2, which alternately consist furan-3-carboxylate 2,2'-bithiophene. Note that PF2 present very small SC 9.7% inexpensive raw materials, facile synthesis, yield. Compared to all-thiophene-backbone counterpart PT-E, two new polymers feature larger...
Hole transport layers (HTLs) in perovskite photovoltaics do not just play a key role device performance; they also determine the overall flexibility, cost, and opportune tandem solar cell applications. Currently used HTLs have limited functionality are costly. Here, we develop an efficient bifunctional cost-effective HTL based on electrochemically deposited polyaniline (PAN) decorated with dodecyl benzene sulfonic acid. We then resurface PAN chlorine to improve conductivity provide...