Fabricating CsPbX3-Based Type I and Type II Heterostructures by Tuning the Halide Composition of Janus CsPbX3/ZrO2 Nanocrystals.

08:00 EDT 15th April 2019 | BioPortfolio

Summary of "Fabricating CsPbX3-Based Type I and Type II Heterostructures by Tuning the Halide Composition of Janus CsPbX3/ZrO2 Nanocrystals."

Fabricating CsPbX3-based heterostructure has proven to be a feasible way to tune their photophysical properties. Here, we report the successful fabrication of Janus CsPbX3/ZrO2 heterostructure nanocrystals (NCs), in which each CsPbX3 NC is partially covered by ZrO2. According to the band alignment, CsPbBr3/ZrO2 and CsPbI3/ZrO2 can be indexed as type I and type II composites, respectively. The type I composites display great enhancement in photoluminescence quantum yield (PLQY, from 63% to 90%) and PL lifetime (from 12.9 ns to 66.1 ns) because of the charge carrier confinement and passivation effect provided by ZrO2. In contrast, the Type II composites can be used in photocatalytic reduction of CO2 because electrons and holes are effectively separated and accumulated in ZrO2 and CsPbI3, respectively, under irradiation. Janus CsPbBr3/ZrO2 NCs showed much higher stability than pristine CsPbBr3 against polar solvents treatment. A stable and highly efficient light emitting device with luminous efficiency up to 55 lm W-1 is fabricated by using CsPbBr3/ZrO2 NCs as the green light source. This work may not only enrich the family of surface passivated perovskite materials, but also provide a good example for the rational design of specific composite in the metal halide perovskite field.


Journal Details

This article was published in the following journal.

Name: ACS nano
ISSN: 1936-086X


DeepDyve research library

PubMed Articles [25057 Associated PubMed Articles listed on BioPortfolio]

All-Inorganic CsPbX3 Perovksite Solar Cells: Progress and Prospects.

Recently, lead halide-based perovskites have become one of the hottest topics in photovoltaic research due to their excellent optoelectronic properties. Among them, organic-inorganic hybrid perovskite...

Bi-metal-organic frameworks type II heterostructures for enhanced photocatalytic styrene oxidation.

Fabricating heterostructures enhances the photocatalytic performance of metal-organic frameworks (MOFs) due to their excellent light absorption and high efficient charge transfer capacity. In this stu...

Near-Unity Photoluminescence Quantum Efficiency for All CsPbX3 (X = Cl, Br and I) Perovskite Nanocrystals: A Generic Synthesis Approach.

In a generic synthesis approach, all three CsPbX3 (X = Cl, Br and I) perovskite nanocrystals having near unity quantum yields is reported. This has been achieved by injecting the desired amount of pre...

Achieving a direct band gap and high power conversion efficiency in an SbI/BiI type-II vdW heterostructure via interlayer compression and electric field application.

Type-II van der Waals (vdW) heterostructures are considered as a class of competitive candidates of high-efficiency photovoltaic materials, due to their spontaneous electron-hole separation. However, ...

External cavity type-I quantum well cascade diode lasers with a tuning range of 440  nm near 3  μm.

A three-stage cascade GaSb-based diode laser heterostructure with an enhanced optical gain spectral bandwidth was designed and fabricated. The gain broadening was achieved by varying the thickness of ...

Clinical Trials [12614 Associated Clinical Trials listed on BioPortfolio]

Incretin Based Therapy for Poorly Controlled Type 2 Diabetic Patients

Type 2 diabetes patients have been proved to have decreased of glucagon-like peptide-1 (GLP-1) levels. Incretin based therapy is associated with improved glycemic control by boosting GLP-1...

Plasma Dihydroceramides Are Associated With Hepatic Steatosis in Type 1 and Type 2 Diabetes

Sphingolipids are associated with metabolic diseases. Distribution of plasma sphingolipids in type 1 and type 2 diabetes has never been studied. The objective of the CERADIAB study is to c...

Diabetes em Movimento® - Community-based Lifestyle Intervention Program for Patients With Type 2 Diabetes

Type 2 diabetes is a chronic disease that affects approximately 13% of Portuguese population and is associated with a high cardiovascular mortality by coronary artery disease and cerebrova...

A New Optical Sweat Test Method Based on a Citric Acid-derived Multi-halide Sensor

Cystic Fibrosis (CF) is a hereditary multi-system disease affecting approximately 30,000n children and adults in the USA. The diagnosis of CF requires biochemical confirmation (either abno...

Implementation of A Patient Centered Self-Management Program for Patients With Type 2 Diabetes

Translational study based on the American Association of Diabetes Educators 7 behaviors to manage Type 2 diabetes

Medical and Biotech [MESH] Definitions

Adaptive antiviral defense mechanisms, in archaea and bacteria, based on DNA repeat arrays called CLUSTERED REGULARLY INTERSPACED SHORT PALINDROMIC REPEATS (CRISPR elements) that function in conjunction with CRISPR-ASSOCIATED PROTEINS (Cas proteins). Several types have been distinguished, including Type I, Type II, and Type III, based on signature motifs of CRISPR-ASSOCIATED PROTEINS.

A genus of the family RETROVIRIDAE consisting of viruses with either type B or type D morphology. This includes a few exogenous, vertically transmitted and endogenous viruses of mice (type B) and some primate and sheep viruses (type D). MAMMARY TUMOR VIRUS, MOUSE is the type species.

A group of recessively inherited diseases that feature progressive muscular atrophy and hypotonia. They are classified as type I (Werdnig-Hoffman disease), type II (intermediate form), and type III (Kugelberg-Welander disease). Type I is fatal in infancy, type II has a late infantile onset and is associated with survival into the second or third decade. Type III has its onset in childhood, and is slowly progressive. (J Med Genet 1996 Apr:33(4):281-3)

Long-lasting voltage-gated CALCIUM CHANNELS found in both excitable and nonexcitable tissue. They are responsible for normal myocardial and vascular smooth muscle contractility. Five subunits (alpha-1, alpha-2, beta, gamma, and delta) make up the L-type channel. The alpha-1 subunit is the binding site for calcium-based antagonists. Dihydropyridine-based calcium antagonists are used as markers for these binding sites.

A severe type of hyperlipidemia, sometimes familial, that it is characterized by the elevation of both plasma CHYLOMICRONS and TRIGLYCERIDES contained in VERY-LOW-DENSITY LIPOPROTEINS. Type V hyperlipoproteinemia is often associated with DIABETES MELLITUS and is not caused by reduced LIPOPROTEIN LIPASE activity as in HYPERLIPOPROTEINEMIA TYPE I .

Quick Search


DeepDyve research library

Searches Linking to this Article