Journal ArticleDOI
Optical properties of CH3NH3PbX3 (X = halogen) and their mixed-halide crystals
TLDR
In this paper, a spin-coating technique was used to construct thin films of microcrystalline CH3NH3PbX3 and their mixed-halide crystals, and their optical properties were investigated.Abstract:
Thin films of microcrystalline CH3NH3PbX3 (X = halogen) as well as their mixed-halide crystals were fabricated by the spin-coating technique, and their optical properties were investigated. X-ray diffraction investigation revealed that CH3NH3PbBr3 − x
Cl
x
(x = 0–3) were successfully formed on glass substrate self-assembly and oriented with the a-axis. Owing to due to their large exciton binding energy, these materials showed clear exciton absorption and free-exciton emission in the visible region at room temperature. Replacing Br with CI made it possible to control the band structure of these materials. As a result, the peak position of the exciton band shifted continuously towards blue region with increasing the CI content in the films.read more
Citations
More filters
Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors
Felix Deschler,Michael Price,Sandeep Pathak,Lina E. Klintberg,David-Dominik Jarausch,Ruben Higler,Sven Hüttner,Tomas Leijtens,Samuel D. Stranks,Henry J. Snaith,Mete Atatüre,Richard T. Phillips,Richard H. Friend +12 more
TL;DR: It is found that photoexcitation in the pristine CH3NH3PbI3-xClx perovskite results in free charge carrier formation within 1 ps and that these free charge carriers undergo bimolecular recombination on time scales of 10s to 100s of ns.
Journal ArticleDOI
Perovskite photonic sources
TL;DR: In this article, the authors discuss the properties of perovskites that benefit light emission, review recent progress in perov-skite electroluminescent diodes and optically pumped lasers, and examine the remaining challenges in achieving continuous-wave and electrically driven lasing.
Journal ArticleDOI
Perovskite Materials for Light-Emitting Diodes and Lasers.
Sjoerd A. Veldhuis,Pablo P. Boix,Natalia Yantara,Mingjie Li,Tze Chien Sum,Nripan Mathews,Subodh Mhaisalkar +6 more
TL;DR: Although perovskite light-emitting devices are yet to become industrially relevant, in merely two years these devices have achieved the brightness and efficiencies that organic light-EMitting diodes accomplished in two decades.
Journal ArticleDOI
Halide perovskite materials for solar cells: a theoretical review
TL;DR: In this article, the structural, electrical, and optical properties of halide perovskite materials in relation to their applications in solar cells are summarized and discussed, along with possible theoretical solutions.
References
More filters
Journal ArticleDOI
Organic-inorganic hybrid materials as semiconducting channels in thin-film field-effect transistors
TL;DR: A thin-film field-effect transistor having an organic-inorganic hybrid material as the semiconducting channel was demonstrated and molecular engineering of the organic and inorganic components of the hybrids is expected to further improve device performance for low-cost thin- film transistors.
Journal ArticleDOI
Optical properties due to electronic transitions in two-dimensional semiconductors (CnH2n+1NH3)2PbI4.
TL;DR: The large oscillator strength and binding energy can be explained by the small dielectric constant of the alkylammonium ``barrier layer,'' which strengthens the Coulomb interaction between an electron and a hole.
Journal ArticleDOI
Organic‐inorganic heterostructure electroluminescent device using a layered perovskite semiconductor (C6H5C2H4NH3)2PbI4
TL;DR: In this paper, the combination of a layered perovskite compound (C6H5C2H4NH3)2PbI4 (PAPI), which forms a stable exciton with a large binding energy owing to its low-dimensional semiconductor nature and exhibits sharp and strong photoluminescence from the exciton band, and an electron-transporting oxadiazole derivative, was used to construct an organic-inorganic heterostructure electroluminescent (EL) device.
Journal ArticleDOI
Preparation and characterization of layered lead halide compounds
Journal ArticleDOI
Three- and low-dimensional inorganic semiconductors
TL;DR: In this article, the structural, optical and related properties of inorganic-organic hybrid systems with a semiconductor behavior are reviewed, especially for semiconductor particles, in which the inorganic part is inorganic.