A5035404138- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Quantum Dots Synthesis And Properties
- Transition Metal Oxide Nanomaterials
- Advanced Memory and Neural Computing
- 2D Materials and Applications
- MXene and MAX Phase Materials
Northwestern Polytechnical University
2023-2025
Materials Science & Engineering
2025
Nano Energy (South Africa)
2025
Wuhan National Laboratory for Optoelectronics
2019-2022
Huazhong University of Science and Technology
2019-2022
Lanzhou University of Technology
2020-2022
Abstract Low‐dimensional Ruddlesden–Popper perovskites (RPPs) exhibit excellent stability in comparison with 3D perovskites; however, the relatively low power conversion efficiency (PCE) limits their future application. In this work, a new fluorine‐substituted phenylethlammonium (PEA) cation is developed as spacer to fabricate quasi‐2D (4FPEA) 2 (MA) 4 Pb 5 I 16 ( n = 5) perovskite solar cells. The champion device exhibits remarkable PCE of 17.3% J sc 19.00 mA cm −2 , V oc 1.16 V, and fill...
Abstract Flexible perovskite solar cells (FPSCs) with high stability in moist air are required for their practical applications. However, the poor mechanical under humidity remains a critical challenge flexible devices. Herein, inspired by exceptional wet adhesion of mussels via dopamine groups, we propose multidentate-cross-linking strategy, which combine multibranched structure and adequate anchor sites three-dimensional hyperbranched polymer to directly chelate materials multiple...
Substrate cooling strategy generates a more stable FAPbI 3 -solvent intermediate and suppresses its transition to δ-FAPbI , enabling ultra long process window up hours efficient solar module.
Liquid-phase Ostwald ripening induced by solvent bath annealing (SBA) extends the diffusion length of perovskite–solvent composites, increases grain size and enhances crystallinity film, leading to efficient perovskite solar cells.
Abstract Previous reports have demonstrated significant effects of hole transport layer (HTL) on the morphology quasi‐2 dimensional (2D) perovskites, injection, and interfacial defect density. However, HTL energy landscape funneling quasi‐2D perovskites not been revealed so far. Herein, PEA 2 Cs n −1 Pb Br 3 +1 perovskite films are fabricated four types HTLs including poly(9‐vinylcarbazole):poly(ethylene oxide) (PVK:PEO), PVK, poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate)...
The applications of quasi-two-dimensional (quasi-2D) perovskite solar cells (PSCs) are limited by their insufficient charge transport, and the underlying transport mechanism is not clear yet. Herein, we report a simple strategy for achieving efficient in quasi-2D FPEA2MAn–1PbnI3n+1 (⟨n⟩ = 4) combining crystal orientation control via hot-casting method regulation phase composition distribution using methylammonium chloride (MACl) additives. steady transient optical spectra reveal that...
Pb–Sn mixed perovskite is a crucial component in all-perovskite tandem cells. However, it remains challenging task to fabricate solar cells (PSCs) due the facile oxidation of Sn2+. In this work, we incorporate dopamine cation (DAH+) create reductive 2D capping layer on film, simultaneously enhancing efficiency and stability PSCs. Dopamine acts as strong reducing agent that effectively reduces Sn4+ The 2D/3D heterojunction induces downward band bending at top surface, facilitating carrier...
Abstract UV radiation presents a substantial challenge to the stability of perovskite solar cells (PSCs), limiting their applications in harsh environments such as outer space. Herein, UV‐resistant molecule octinoxate (OCT) is introduced mitigate adverse effects irradiation. OCT additive demonstrates capability modulate crystallization process, resulting films with larger grains and enhanced crystallinity. Moreover, doping also facilitates charge extraction PSCs. The PSCs exhibit an...
Smart window applications are highly promising for tuning the sunlight intensity in buildings and vehicles. Large-area flexible smart windows easily integrated with any curved surface compared to conventional rigid devices yet challenging due difficulty fabricating large-area homogeneous electrochromic films. Herein, we demonstrate a MXene mediated Prussian blue situ synthesis strategy fabricate MXene@Prussian composite film (MPB) on (up 900 cm2) ITO substrates high homogeneity adjustable...
2D Ruddlesden–Popper perovskite solar cells (PSCs) with structure formulated as R2MAn−1PbnI3n+1 (R is the organic bulky cation) exhibit superior environmental stability, but their efficiency still lags behind that of 3D counterpart, which mainly limited by insufficient light absorption and carrier transportation. Herein, we incorporated guanidinium (GA+) into PEA at “R” site to form mixed cations investigated doping effect GA+ on photovoltaic performance layered perovskites. Our results show...