A5100391153- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Photonic and Optical Devices
- Radiation Detection and Scintillator Technologies
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Metal-Organic Frameworks: Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Covalent Organic Framework Applications
- Advanced Fiber Optic Sensors
- Crystallography and molecular interactions
- Ga2O3 and related materials
- Gas Sensing Nanomaterials and Sensors
- Ecology and Vegetation Dynamics Studies
- Optical Network Technologies
- Reconstructive Surgery and Microvascular Techniques
- Plant and animal studies
Lanzhou University
2016-2025
Nanjing Medical University
2024-2025
Southern Medical University
2024-2025
Nanjing General Hospital of Nanjing Military Command
2024-2025
Shaanxi Normal University
2013-2025
China Three Gorges Corporation (China)
2024-2025
Lanzhou Jiaotong University
2022-2025
Virginia Tech
2024-2025
State Key Laboratory on Integrated Optoelectronics
2025
Jilin University
2022-2025
Abstract As the black cesium lead iodide (CsPbI 3 ) tends to transit into a yellow δ-phase at ambient, it is imperative develop stabilized phase for photovoltaic applications. Herein, we report distorted CsPbI film by exploiting synergistic effect of hydroiodic acid (HI) and phenylethylammonium (PEAI) additives. It found that HI induces formation hydrogen (HPbI 3+x ), an intermediate with appropriate band gap 1.69 eV; while PEAI provides nucleation optimized crystallization. More...
It is imperative to develop a large-aspect-ratio grain-based thin film with low trap density for high-performance inorganic perovskite CsPbI2Br solar cells. Herein, by using Mn2+ ion doping modulate growth, we achieved grains aspect ratios as high 8. found that ions insert into the interstices of lattice during growth process, leading suppressed nucleation and decreased rate. The combination aids in achievement larger crystalline increased JSC values 14.37 mA/cm2 FFs large 80.0%. Moreover,...
Abstract Each component layer in a perovskite solar cell plays an important role the performance. Here, few types of polymers including representative p‐type and n‐type semiconductors, classical insulator, are chosen to dope into film. The long‐chain polymer helps form network among crystalline grains, as witnessed by improved film morphology device stability. dewetting process is greatly suppressed cross‐linking effect chains, thereby resulting uniform films with large grain sizes....
Abstract All‐inorganic CsPbBrI 2 perovskite has great advantages in terms of ambient phase stability and suitable band gap (1.91 eV) for photovoltaic applications. However, the typically used structure causes reduced device performance, primarily due to large recombination at interface between perovskite, hole‐extraction layer (HEL). In this paper, an efficient solar cell (PSC) with a dimensionally graded heterojunction is reported, which material distributed within bulk–nanosheet–quantum...
Parasitic absorption by window layer, electrode and interface layer in the near ultraviolet (UV) region is no longer negligible for high-efficiency perovskite solar cells. On other hand, UV-induced degradation also a big component of cell instability. Herein, CsPbCl3:Mn-based quantum dots (QDs) are synthesized applied onto front side cells as energy-down-shift (EDS) layer. It found that with very high yield (∼60%) larger Stokes shift (>200 nm), CsPbCl3:Mn QDs effectively convert normally...
Abstract Scintillator is a unique class of luminescent materials, which extensively used in many fields such as nondestructive testing, medical imaging, space probes, etc. Compared with the disadvantages traditional scintillator materials have high cost, are fragile, long response time and low spatial resolution disadvantages, metal halide perovskites considered to be most potential X‐ray detection imaging due their preeminent performance radiative absorption, carrier transportation,...
Abstract All‐inorganic perovskite CsPbI 3 quantum dots (QDs) offer much better stability for photovoltaic applications. Unfortunately, their cell efficiencies are hindered by the low carrier transport efficiency of QD‐assembled films. In addition, agglomeration‐induced phase change QDs poses another problem material and device degradation. Herein, use µ‐graphene (µGR) to crosslink form µGR/CsPbI film is demonstrated. It found that resultant provides not only an effective channel transport,...
A series of novel red emission Mg3Ga2GeO8 (MGG):Mn4+ phosphors under near-UV (NUV) excitation are synthesized successfully by traditional high-temperature solid-state reaction. The structure is investigated high-resolution transmission electron microscopy, scanning and powder X-ray diffraction (XRD) Rietveld refinement. It has one octahedral site tetrahedral in the crystal structure. According to XRD photoluminescence (PL) property analysis, Mn4+ can occupy an (Mg2+/Ga3+) site. PL properties...
All-inorganic CsPbBr3 perovskite solar cells display outstanding stability toward moisture, light soaking, and thermal stressing, demonstrating great potential in tandem commercialization. Unfortunately, it is still challenging to prepare high-performance films at moderate temperatures. Herein, a uniform, compact film was fabricated using its quantum dot (QD)-based ink precursor. The then treated thiocyanate ethyl acetate (EA) solution all-ambient conditions produce superior CsPbBr3-CsPb2Br5...
A novel blue-emitting phosphor Na<sub>3</sub>Sc<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>:Eu<sup>2+</sup>was successfully synthesized by solid-state reaction.
Abstract Low‐dimensional perovskite halides have shown a great potential as X‐ray detection materials because of efficient exciton emissions originating from strongly spatially localized charge carriers. Nonetheless, most them scintillation yield far below their theoretical limits. Here, it is found that the harvesting efficiency produced carriers can be significantly enhanced via small amount In + doping in these highly structures. A bright and sensitive zero‐dimensional Cs 3 Cu 2 I 5 :In...
Low-dimensional organic-metal halides are regarded as an emerging class of X-ray scintillation materials, but most the discovered compounds confronted with challenges toxicity and instability. To address these challenges, we herein report two lead-free zero-dimensional (0D) hybrid halides, (Bmpip)2Cu2Br4 PPh4CuBr2 single crystals, grown by low-cost solution-processing method. By single-crystal diffraction refinement, crystal structures were determined to be orthorhombic monoclinic systems,...
In order to explore a new family of phosphate phosphors, the synthesis and crystal structure novel family, Ca19M2(PO4)14 (M = Mg, Zn, Mn), were investigated. Eu3+ doped Ca19Mg2(PO4)14 red phosphor was also successfully synthesized with objective application in ultraviolet-based light-emitting diodes (LEDs) field emission displays (FEDs). The characteristic photoluminescence properties studied detail by excitation (PLE), (PL) spectra decay times. Ca19Mg2(PO4)14:0.06Eu3+ offers higher...
N-GQDs with 80% PLQY are used as an EDS layer for γ-CsPbI<sub>3</sub> PSCs, and attained a high PCE of 16.02%.
Abstract The highest certified power conversion efficiency (PCE) of black phase based CsPbI 3 perovskite solar cells has exceeded 18%, and become a hotspot in recent progress. However, the rapidly transforms to yellow ambient conditions due its thermodynamic instability. Here, Ruddlesden–Popper 2D structure is introduced into γ‐CsPbI film stabilize via reducing dimensionality. It found that judicious amount phenylethylammonium iodide can adjust dimensionality from quasi‐2D 3D phase....
Abstract Introducing hydroiodic acid (HI) as a hydrolysis‐derived precursor of the intermediate compounds has become an increasingly important issue for fabricating high quality and stable CsPbI 3 perovskite solar cells (PSCs). However, materials composition their effects on device performance remain unclear. Here, series high‐quality are prepared it is shown that they consist DMAI/DMAPbI x . Further characterization products show main component this system still Most dimethylammonium (DMA +...
With ITIC-modified TiO<sub>2</sub>, the planar perovskite solar cell performance has been dramatically increased from 17.12% to 20.08%.