A5064904537- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- 2D Materials and Applications
- Advanced battery technologies research
- Solid-state spectroscopy and crystallography
- Advanced Polymer Synthesis and Characterization
- Block Copolymer Self-Assembly
- Advanced Photocatalysis Techniques
- Polymer Surface Interaction Studies
- Advanced Sensor and Energy Harvesting Materials
- Advanced Memory and Neural Computing
- Polyoxometalates: Synthesis and Applications
- Coral and Marine Ecosystems Studies
- Copper-based nanomaterials and applications
- Catalytic Processes in Materials Science
- Luminescence and Fluorescent Materials
- Electronic and Structural Properties of Oxides
- Aerogels and thermal insulation
- Synthesis and properties of polymers
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
Nanjing Tech University
2017-2025
The Synergetic Innovation Center for Advanced Materials
2017-2021
Wake Forest University
2013-2014
Chinese Academy of Sciences
2008-2013
Changchun Institute of Applied Chemistry
2008-2009
State Key Laboratory of Polymer Physics and Chemistry
2008-2009
Harvard University
1995-1997
Perovskite synthesis out in the open Although methods have been developed that create photoactive black perovskite phase of formamidinium lead iodide (α-FAPbI 3 ), these routes are temperature and humidity sensitive less compatible with large-scale solar cell production. Hui et al. report an alternative route which vertically aligned thin films grown from ionic liquid methylamine formate. Nanoscale channels lower barrier to permeation enable transformation α-FAPbI , even at high room...
Recent advances in additive engineering for improving the perovskite morphology, charge transport, and excitonic optical properties have been reviewed.
An efficient electron transport layer (ETL) plays a key role in promoting carrier separation and extraction planar perovskite solar cells (PSCs). effective composite ETL is fabricated using carboxylic-acid- hydroxyl-rich red-carbon quantum dots (RCQs) to dope low-temperature solution-processed SnO2 , which dramatically increases its mobility by ≈20 times from 9.32 × 10-4 1.73 10-2 cm2 V-1 s-1 . The achieved one of the highest reported mobilities for modified Fabricated PSCs based on this...
Abstract Metal halide perovskites (MHPs), emerging as innovative and promising semiconductor materials with prominent optoelectronic properties, has been pioneering a new era of light management (ranging from emission, absorption, modulation, to transmission) for next-generation technology. Notably, the exploration fundamental characteristics MHPs their devices is main research theme during past decade, while in next it will be primarily critical promote implantation optoelectronics. In this...
2D Ruddlesden–Popper (2DRP) tin (Sn) perovskite solar cells (PSCs) play an irreplaceable role in advancing the commercialization of perovskite-based photovoltaic devices due to their low toxicity and improved stability. However, efficiency 2DRP Sn PSCs has not made a breakthrough owing incompletely oriented crystal growth poor film morphology, which is limited by complex uncontrollable crystallization process. Here, we first introduce mixed spacer organic cations [n-butylamine (BA)...
All-inorganic lead halide perovskites are promising candidates for optoelectronic applications. However, fundamental questions remain over the component interaction in perovskite precursor solution due to limitation of most commonly used solvents N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO). Here, we report an tailoring strategy all-inorganic CsPbI3-x Brx by involving ionic liquid solvent methylammonium acetate (MAAc). C=O shows strong with (Pb2+ ) N-H⋅⋅⋅I hydrogen bond...
Abstract Two‐dimensional (2D) AA′ n −1 M X 3 +1 type halide perovskites incorporating straight‐chain symmetric diammonium cations define a new of structure, but their optoelectronic properties are largely unexplored. Reported here is the synthesis centimeter‐sized perovskite, BDAPbI 4 (BDA=NH C H 8 NH ), single crystal and its charge‐transport under X‐ray excitation. The shows staggered configuration [PbI 6 ] 4− layers, band gap 2.37 eV, low trap density 3.1×10 9 cm −3 . single‐crystal...
In our day-to-day lives, advances in lightweight and flexible photovoltaics will promote a new generation of soft electronics machines requiring high power-per-weight. Ultrathin perovskite solar cells (F-PSCs) with power-per-weight have displayed unique potential for specific applications where lower weight, higher flexibility, conformability are indispensable. This Review highlights the recent progress practical ultrathin F-PSCs demonstrates routes toward enhanced device efficiency improved...
Abstract Tin‐based perovskites show great potential in photovoltaic applications, and the development of corresponding solar cells (PSCs) has made exciting progress during past few years. However, owing to high Lewis acidity easy oxidation Sn 2+ , Sn‐based perovskite films suffer from fast crystallization formation vacancy defects with low activation energy solution film‐forming process, resulting poor film quality inferior device performance. Therefore, an in‐depth understanding rational...
Dion–Jacobson (DJ) phase halide perovskites have attracted extensive attention in photovoltaic devices due to their significantly enhanced stability when compared with conventional 3D analogs. However, fundamental questions concerning the quantum well (QW) barrier thicknesses, which are critical design efficient DJ perovskite photovoltaics, remain unknown. Herein, it is unambiguously demonstrated that QW thickness, depending on bulky organic ammonium spacers different chain lengths, such as...
The management of perovskite intermediates to construct films with uniform crystals and controlled surface morphology was introduced.
Reduced-dimensional (RD) perovskite solar cells (PSCs) are emerging as highly attractive alternatives to three-dimensional (3D) PSCs due their dramatically improved environmental stability and photostability. Diamine-based RD perovskites with a single organic amine interlayer possess orderly inorganic sheets smaller insulation area, indicating great potential in combining high efficiency long-term stability. Here, we report an efficient stable PSC based on 1,4-butanediamine (BDA). We found...
Abstract Due to the additional introduction of bulky organic ammonium and competition between methyl in 2D Ruddlesden‐Popper (2DRP) perovskite, crystallization process becomes complicated. Here, it is demonstrated that rapid controlled by processing solvents plays an important role achieving high‐quality 2DRP perovskite films. It found solvents, e.g., dimethylacetamide (DMAC), N,N‐dimethylformamide (DMF), dimethyl sulfoxide (DMSO), with a different polarity boiling point, have almost no...
Abstract Low‐dimensional Ruddlesden–Popper (LDRP) lead‐free perovskite has great potential due to its improved stability and oriented crystal growth, which is mainly attributed the effective control of crystallization kinetics. However, kinetics LDRP films are highly limited by Lewis theory. Here, management tin (Sn) jointly controlled adducts ion exchange process using a mixture polar aprotic solvent dimethyl sulfoxide (DMSO) liquid methylammonium acetate (MAAc) (the named as “L‐I”)...
Interfacial engineering is a simple and effective strategy that can improve the photovoltaic performance in organic–inorganic perovskite solar cells (PSCs). Herein, dopamine (DA) self-assembled monolayer (SAM) was introduced on top of SnO2 electron transporting layer (ETL) to modify SnO2/perovskite interface. The processing temperature present devices around 150 °C, power conversion efficiency PSCs significantly improved 16.65% compared device without modification (14.05%). Such enhancement...
Unique characteristics of 2D Ruddlesden–Popper (2DRP) perovskite for future photovoltaic application.
Abstract Pb‐based metal halide perovskites (MHPs) have emerged as efficient light absorbers in third‐generation photovoltaic devices, and the latest certified power conversion efficiency (PCE) of perovskite solar cells (PSCs) has reached 25.2%. Despite great progress, MHPs are affected by toxicity, which hinders their market entry a potential future large‐scale commercialization effort. Therefore, exploration Pb‐free become one alternative solutions sought community. Among all MHPs, Sn‐based...
This article highlights recent developments of emerging metal halide perovskite based resistive switching memory devices and artificial synapses.