A5077504045- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- 2D Materials and Applications
- Organic Light-Emitting Diodes Research
- Solid-state spectroscopy and crystallography
- Organic Electronics and Photovoltaics
- Advanced Battery Materials and Technologies
- Coral and Marine Ecosystems Studies
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
Fudan University
2019-2024
State Key Laboratory of ASIC and System
2021
Nanjing Tech University
2016-2017
The Synergetic Innovation Center for Advanced Materials
2016-2017
Abstract Toward pursuing high‐performance photodetectors based on 2D transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS 2 ), it is desirable to reduce the high dark current and sluggish response time. Here, in multilayer MoS ‐based photodetectors, a halide perovskite, (C 6 H 5 C 4 NH 3 ) PbI ((PEA) introduced bifunctional material: both electron reservoir free carriers passivation agent passivate defects. Surprisingly, suppressed by six orders of magnitude after...
Exploring lead-free candidates and improving efficiency stability remain the obstacle of hybrid organic-inorganic perovskite-based devices commercialization. Traditional trial-and-error methods seriously restrict discovery especially for large search space, complex crystal structure multi-objective properties. Here, authors propose a multi-step multi-stage screening scheme to accelerate perovskites A2 BB'X6 from number through combining machine learning with high-throughput calculations...
Abstract The power conversion efficiency (PCE) of perovskite solar cells (PSCs) is approaching their Shockley‐Queisser (S‐Q) limit through numerous efforts in key parameters improvement. To further the limit, it important to facilitate fill factor (FF), a parameter closely related carrier transport and nonradiative recombination. Herein, an interfacial bridging strategy proposed improve FF, which utilizes functional graphene quantum dots at tin oxide (SnO 2 )/perovskite buried interface. As...
Abstract With the capability to manipulate built‐in field in solar cells, ferroelectricity is found be a promising attribute for harvesting energy cell devices by influencing associated device parameters. Researchers have devoted themselves exploration of ferroelectric materials that simultaneously possess strong light absorption and good electric transport properties long time. Here, it presented novel facile approach combining state‐of‐art with incorporation room temperature 1D perovskite...
Quasi-2D perovskites have attracted extensive attention due to their extraordinary stability compared 3D counterparts. Presently, the bottleneck in quasi-2D perovskite solar cells is relatively low efficiency. The intrinsic interior carrier transport layer consisting of disorderly oriented phases and inadequate optimization interfacial transfer greatly limited overall device performance. A comprehensive study on effective phase manipulation BA2MA4Pb5I16 (n = 5) presented pursue optimal With...
Perovskite single-crystal redissolution (PSCR) strategy is highly desired for efficient formamidinium lead triiodide (FAPbI
Abstract Energy loss in perovskite grain boundaries (GBs) is a primary limitation toward high‐efficiency solar cells (PSCs). Two critical strategies to address this issue are high‐quality crystallization and passivation of GBs. However, the established methods generally carried out discretely due complicated mechanisms growth defect formation. In study, combined method proposed by introducing 3,4,5‐Trifluoroaniline iodide (TFAI) into precursor. The TFAI triggers union nano‐sized colloids...
Solution processed organic-inorganic hybrid perovskites are emerging as a new generation materials for optoelectronics. However, the electroluminescence is highly limited in light emitting diodes (LED) due to low exciton binding energy and great challenge stability. Here, we demonstrate super air stable quasi-two dimensional perovskite film employing hydrophobic fluorine-containing organics barrier layers, which can store ambient more than 4 months with no change. The dramatically reduced...
A facile acetic acid modification is introduced to passivate the defects at SnO<sub>2</sub>/perovskite interface, thus improving device performance.
The structure and the electronic properties of electron‐transport layer (ETL) perovskite solar cells (PSCs) govern interfacial charge transfer transportation to electrode. ETLs two dimensions, that are atom thick, have a planar possesses special properties, such as surface collective motion excitons or transfer–driven defect state relief, is 2D transition metal dichalcogenide, allow highly energetic carrier dynamic process for enhanced photovoltaic effect. Herein, it discovered planar,...
A deficiency in the photoelectrical dynamics at interface due to surface traps of TiO2 electron transport layer (ETL) has been critical factor for inferiority power conversion efficiency (PCE) perovskite solar cells. Despite its excellent energy level alignment with most materials, large density defect as a result sub lattice vacancies hurdle an efficient photovoltaic process device. Here, we report that atoms thick 2D TiS2 grown on (001) faceted and single-crystalline nanograss (NG) ETL...
Abstract 2D perovskites are demonstrated as the growth template for modulation of phase transition and crystallization formamidinium lead triiodide (FAPbI 3 ). However, it is challenging to obtain highly oriented α‐FAPbI regulate at bottom FAPbI film. Here, a (BA) 2 PbI 4 layer with preferred orientation introduced perform quasi‐epitaxial , which triggers perovskite formation. Owing assembly [PbI 6 ] 4− octahedral on template, (100) from top attained. At optimum concentration, gradually...
Abstract Seit einigen Jahren entwickeln sich Metall‐organische Trihalogenidperowskite zu aussichtsreichen Materialien für kostengünstige, flexible und hocheffiziente Solarzellen. Vor einer möglichen gewerblichen Nutzung müssen aber die organisch‐anorganischen Hybrid‐Perowskitmaterialien trotz ihrer Verarbeitungsvorteile Probleme schlechten Stabilität gegen Feuchtigkeit, Wärme, Licht Sauerstoff gelöst werden. Hier besprechen wir den aktuellen Stand der Forschung behandeln aktuelle...
Two-dimensional (2D) perovskite materials are a promising platform to construct high performance photodetectors due their novel structure, stability, resistance ion migration and decent light harvesting ability.
Ruddlesden-Popper (RP) metal halide perovskites are considered as promising optoelectronic materials due to their good environmental stability and desirable properties. However, the phase composition ordering in deposited film, with a fixed ratio of large organic spacer cation precursor solution, hard be further tailored for specific applications. Herein, it is shown that even ratio, can still largely regulated by utilizing different crystallization kinetics various cations inorganic...
Abstract The rapid development of lead halide perovskite light emitting diodes (PeLED) provides bright prospects for future lighting and display applications. However, the lack efficient blue emission, insufficient device stability, shortage convenient patterning methods greatly impede PeLED In this work, a feasible two‐step fabrication method combined with block copolymer (BCP) template is introduced to fabricate high quality CH 3 NH PbBr x Cl 3− 3D film. BCP‐templated film possesses...
Abstract 2D Ruddlesden–Popper perovskites have attracted increasing attention for their outstanding optoelectronic properties and improved stability compared to the 3D counterparts. The unique nature of crystal growth orientations uneven distribution in provide a great opportunity construct promising lateral photodetector device that has not been fully uncovered. Here, by improving random orientation vertical film structure, dark current is expected be significantly suppressed photodetector....